Re: freeze-thaw - socket/file handle to ref then string
[EMAIL PROTECTED] wrote: hello all, here is a ref/deref problem I need to take a socket handle, convert it to a socket ref, then a scaler string A bit later in the same script, I need to take that scaler string and turn it back to a socket ref, and deref it back to the socket handle. Maybe instead of asking for the way to implement your solution, you should describe the complete problem and see if we can come up with an alternate solution that is a little less convoluted. :) An example would be great, Sure - you got one ? -- ,-/- __ _ _ $Bill LuebkertMailto:[EMAIL PROTECTED] (_/ / )// // DBE CollectiblesMailto:[EMAIL PROTECTED] / ) /-- o // // Castle of Medieval Myth Magic http://www.todbe.com/ -/-' /___/__/_/_http://dbecoll.tripod.com/ (My Perl/Lakers stuff) ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: comparing floating point numbers
At 10:40 PM 7/24/05 -0400, Ted Schuerzinger wrote: Ken Barker graced perl with these words of wisdom: What kind of post is this? It was an informative help post, made especially informative and helpful by the fact that the relevant material was included at the relevant point in the code, as opposed to being top-posted. Well, I'll have to agree that there should have been some more snippage to clarify where the reply was. -- REMEMBER THE WORLD TRADE CENTER ---= WTC 911 =-- ...ne cede males 0100 ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
re: comparing floating point numbers
At 04:07 PM 7/24/05 -0400, John Deighan wrote: Sorry about the lack of sample code, but I know that people who work with floating point numbers know about this problem, and I was wondering what the best solution was. Here is sample code with Well ur right, the easy answer is to do the $diff .0001 route. If you really want the hard core way, be prepared to engage in some heavy wizardy and/or pain. What u have to do is basically take over numeric processing from perl and do everything in scientific notation. Then provide all ur own arithmetic functions. Of course I'm sure somebody has already implemented a module to do this. Numbers will then be represented as two element arrays of an integer and an integer power of ten. 2.35 = 235*10^-2 = (235, -2). Bye bye floats. U can override the builtin math operators or provide functions. Another outside thing u can do is do everything in base 210 numbers. Why 210? It's the product of all the prime numbers less than 10 so it can eliminate run-on fractions. But I digress. -- REMEMBER THE WORLD TRADE CENTER ---= WTC 911 =-- ...ne cede males 0100 ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: comparing floating point numbers
On Sunday, July 24, 2005 at 6:11 PM, Ken Barker wrote:
What kind of post is this?
I do not see that anything was added at all. Give us all a
break - don't
bother - whatever your intentions.
well, don't you feel stupid now?
At 06:35 PM 7/24/2005, $Bill Luebkert wrote:
John Deighan wrote:
At 02:20 PM 7/24/2005, Ed Chester wrote:
John Deighan::
Is there a safe way to compare 2 floating point numbers in Perl?
[snip] My debugger says that they're both '630.24'
[snip] However,
the == test fails and the != test succeeds
can you post code with the comparison == that fails ?
if the debugger says they're the same, they're very very probably
the same. are you sure the variable (or whatever) you're
giving to
== are really what you want them to be?
there are lots of ways to compare numbers, right down to
looping over
the bits
and logically
XNORing them.
Sorry about the lack of sample code, but I know that
people who work
with floating point numbers know about this problem, and I was
wondering what the best solution was. Here is sample code with
output. Note that I'm not formatting the output or rounding or
anything - just printing out the contents of the 2 variables.
my $sum1 = -237.15;
my $sum2;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
print(sum1 = $sum1\n);
print(sum2 = $sum2\n);
if ($sum1 == $sum2) {
You could try something like:
if (abs ($sum1 - $sum2) .0001) {
print(EQUAL\n);
}
else {
print(NOT EQUAL\n);
}
OUTPUT:
sum1 = -237.15
sum2 = -237.15
NOT EQUAL
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
--
,-/- __ _ _ $Bill Luebkert
Mailto:[EMAIL PROTECTED]
(_/ / )// // DBE
CollectiblesMailto:[EMAIL PROTECTED]
/ ) /-- o // // Castle of Medieval Myth Magic
http://www.todbe.com/
-/-' /___/__/_/_http://dbecoll.tripod.com/ (My
Perl/Lakers stuff)
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: comparing floating point numbers
use sprintf to set the floating point field to 2 decimal places. (or
more, if you want them...)
$float1=-135.176# final values before rounding
$float2=-135.184
$float1=sprintf(%.2f,$float1);# force $float1 to be rounded at 2
decimal places
$float2=sprintf(%.2f,$float2);# ditto $float2
print $float1\n$float2\n;
if ($float1 == $float2) {
printvalues are EQUAL\n;
}
else { printvalues are NOT EQUAL\n; }
the example above will return
-135.18
-135.18
values are EQUAL
change
$float1 = 255.733
$float2 = 255.735
and this will return
255.73
255.74
values are NOT EQUAL
-Original Message-
From: John Deighan
my $sum1 = -237.15;
my $sum2;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
print(sum1 = $sum1\n);
print(sum2 = $sum2\n);
if ($sum1 == $sum2) {
print(EQUAL\n);
}
else {
print(NOT EQUAL\n);
}
OUTPUT:
sum1 = -237.15
sum2 = -237.15
NOT EQUAL
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
activeperl + mysql + threads = crash
Hi all,
I thought I can hit a nice milestone today, but it seems that I have hit
a strange obstacle instead.
In my tests, the following code will run, but when it terminates an
error message will be shown.
use strict;
use warnings;
use DBI;
use threads;
doIt();
doIt();
sub doIt
{
my $dbh = DBI-connect('dbi:mysql:database','username','password');
my $stmt = $dbh-prepare ('select id from tablename');
$stmt-execute();
while (my $record=$stmt-fetchrow_hashref('NAME_lc')) {}
}
Change the database connection parameters (eg. username, password, table
name) to your database.
My analysis of the problem is as follows:
1. Using the ODBC driver is ok. I've tested with MSSQL connection and
it's fine.
2. The problem lies with using threads alongside DBI. If I take out 'use
threads' all is well.
3. There are 2x doIt() calls because it only fails on the second
database connection.
4. It seems to be related to fetchrow_hashref(), because if I take that
out, all is fine.
Can someone confirm this? Is there anybody who can suggest a workaround?
Thanks.
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: comparing floating point numbers
use sprintf to set the floating point field to 2 decimal places. (or
more, if you want them...)
$float1=-135.176# final values before rounding
$float2=-135.184
$float1=sprintf(%.2f,$float1);# force $float1 to be rounded at 2
decimal places
$float2=sprintf(%.2f,$float2);# ditto $float2
print $float1\n$float2\n;
if ($float1 == $float2) {
printvalues are EQUAL\n;
}
else { printvalues are NOT EQUAL\n; }
the example above will return
-135.18
-135.18
values are EQUAL
change
$float1 = 255.733
$float2 = 255.735
and this will return
255.73
255.74
values are NOT EQUAL
-Original Message-
From: John Deighan
my $sum1 = -237.15;
my $sum2;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
print(sum1 = $sum1\n);
print(sum2 = $sum2\n);
if ($sum1 == $sum2) {
print(EQUAL\n);
}
else {
print(NOT EQUAL\n);
}
OUTPUT:
sum1 = -237.15
sum2 = -237.15
NOT EQUAL
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: activeperl + mysql + threads = crash
Hello,
I tryed it also with Perl v5.8.7 and had the same prroblem as you, on
the 2nd doIt Perl crashes.
I also found out that Perl crashes in the DBI.pm sub disconnect_all.
Removing use threads; it works.
regards,
Reinhard
Foo Ji-Haw wrote:
Hello Reinhard,
I am using 5.8.6 of ActivePerl. Thanks for checking out the codes.
Reinhard Pagitsch wrote:
Hello,
Foo Ji-Haw wrote:
Hi all,
I thought I can hit a nice milestone today, but it seems that I have
hit a strange obstacle instead.
In my tests, the following code will run, but when it terminates an
error message will be shown.
use strict;
use warnings;
use DBI;
use threads;
doIt();
doIt();
sub doIt
{
my $dbh = DBI-connect('dbi:mysql:database','username','password');
my $stmt = $dbh-prepare ('select id from tablename');
$stmt-execute();
while (my $record=$stmt-fetchrow_hashref('NAME_lc')) {}
}
Change the database connection parameters (eg. username, password,
table name) to your database.
My analysis of the problem is as follows:
1. Using the ODBC driver is ok. I've tested with MSSQL connection
and it's fine.
2. The problem lies with using threads alongside DBI. If I take out
'use threads' all is well.
3. There are 2x doIt() calls because it only fails on the second
database connection.
4. It seems to be related to fetchrow_hashref(), because if I take
that out, all is fine.
Can someone confirm this? Is there anybody who can suggest a
workaround? Thanks.
There is no problem here, Perl v5.6.1. Which Perl version do you use?
regards,
Reinhard
--
QA
ISIS Information Systems
Austria tel: (+43) 2236 27551 150 Fax: 2236 21081
Visit our web site http://www.isis-papyrus.com
---
This e-mail is only intended for the recipient and not legally
binding. Unauthorised use, publication, reproduction or
disclosure of the content of this e-mail is not permitted.
---
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: activeperl + mysql + threads = crash
Hello Reinhard,
Thanks for confirming my concerns. So you say that on 5.6.x it is ok,
but not on 5.8.x. But threading + mysql is quite a powerful combination
to give up!
I wonder if anybody in this mailing list has a workaround/ solution.
Reinhard Pagitsch wrote:
Hello,
I tryed it also with Perl v5.8.7 and had the same prroblem as you, on
the 2nd doIt Perl crashes.
I also found out that Perl crashes in the DBI.pm sub disconnect_all.
Removing use threads; it works.
regards,
Reinhard
Foo Ji-Haw wrote:
Hello Reinhard,
I am using 5.8.6 of ActivePerl. Thanks for checking out the codes.
Reinhard Pagitsch wrote:
Hello,
Foo Ji-Haw wrote:
Hi all,
I thought I can hit a nice milestone today, but it seems that I
have hit a strange obstacle instead.
In my tests, the following code will run, but when it terminates an
error message will be shown.
use strict;
use warnings;
use DBI;
use threads;
doIt();
doIt();
sub doIt
{
my $dbh = DBI-connect('dbi:mysql:database','username','password');
my $stmt = $dbh-prepare ('select id from tablename');
$stmt-execute();
while (my $record=$stmt-fetchrow_hashref('NAME_lc')) {}
}
Change the database connection parameters (eg. username, password,
table name) to your database.
My analysis of the problem is as follows:
1. Using the ODBC driver is ok. I've tested with MSSQL connection
and it's fine.
2. The problem lies with using threads alongside DBI. If I take out
'use threads' all is well.
3. There are 2x doIt() calls because it only fails on the second
database connection.
4. It seems to be related to fetchrow_hashref(), because if I take
that out, all is fine.
Can someone confirm this? Is there anybody who can suggest a
workaround? Thanks.
There is no problem here, Perl v5.6.1. Which Perl version do you use?
regards,
Reinhard
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: activeperl + mysql + threads = crash
---BeginMessage---
Hello,
I made an additional test:
Using the code below Perl v5.8.7 does not crash. In the Task Manager I
can see that Perl uses 3 threads.
With the original code he uses only one thread.
--- new code --
use strict;
use warnings;
use DBI;
use threads;
print first\n;
my $thread = threads-new(doIt,argument);
print scound\n;
my $thread1 = threads-new(doIt,argument);
$thread-join();
$thread1-join();
$thread-detach();
$thread1-detach();
sub doIt
{
my $Thishost = $ENV{COMPUTERNAME};
my $addr = (gethostbyname($Thishost))[4];
$addr = join(., unpack(C4, $addr));
my $dsn = DBI:mysql:database=resources;host=$addr;
my $dbh = DBI-connect($dsn,user, password) or die can not
connect to database \n;
# my $dbh = DBI-connect('dbi:mysql:database','user','password');
my $stmt = $dbh-prepare ('select resolution from resources');
$stmt-execute();
while (my $record=$stmt-fetchrow_hashref('NAME_lc')) {
}
$dbh-disconnect;
}
--- end new code --
Foo Ji-Haw wrote:
Hello Reinhard,
Thanks for confirming my concerns. So you say that on 5.6.x it is ok,
but not on 5.8.x. But threading + mysql is quite a powerful
combination to give up!
I wonder if anybody in this mailing list has a workaround/ solution.
Reinhard Pagitsch wrote:
Hello,
I tryed it also with Perl v5.8.7 and had the same prroblem as you, on
the 2nd doIt Perl crashes.
I also found out that Perl crashes in the DBI.pm sub disconnect_all.
Removing use threads; it works.
regards,
Reinhard
Foo Ji-Haw wrote:
Hello Reinhard,
I am using 5.8.6 of ActivePerl. Thanks for checking out the codes.
Reinhard Pagitsch wrote:
Hello,
Foo Ji-Haw wrote:
Hi all,
I thought I can hit a nice milestone today, but it seems that I
have hit a strange obstacle instead.
In my tests, the following code will run, but when it terminates
an error message will be shown.
use strict;
use warnings;
use DBI;
use threads;
doIt();
doIt();
sub doIt
{
my $dbh = DBI-connect('dbi:mysql:database','username','password');
my $stmt = $dbh-prepare ('select id from tablename');
$stmt-execute();
while (my $record=$stmt-fetchrow_hashref('NAME_lc')) {}
}
Change the database connection parameters (eg. username, password,
table name) to your database.
My analysis of the problem is as follows:
1. Using the ODBC driver is ok. I've tested with MSSQL connection
and it's fine.
2. The problem lies with using threads alongside DBI. If I take
out 'use threads' all is well.
3. There are 2x doIt() calls because it only fails on the second
database connection.
4. It seems to be related to fetchrow_hashref(), because if I take
that out, all is fine.
Can someone confirm this? Is there anybody who can suggest a
workaround? Thanks.
There is no problem here, Perl v5.6.1. Which Perl version do you use?
regards,
Reinhard
--
QA
ISIS Information Systems
Austria tel: (+43) 2236 27551 150 Fax: 2236 21081
Visit our web site http://www.isis-papyrus.com
---
This e-mail is only intended for the recipient and not legally
binding. Unauthorised use, publication, reproduction or
disclosure of the content of this e-mail is not permitted.
---
---End Message---
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: activeperl + mysql + threads = crash
I thought I can hit a nice milestone today, but it seems that I have hit a strange obstacle instead. In my tests, the following code will run, but when it terminates an error message will be shown. use strict; use warnings; use DBI; use threads; doIt(); doIt(); [snip] Can someone confirm this? Is there anybody who can suggest a workaround? The following links imply that DBD::mysql is not threadsafe by default due to the underlying C library, but can be made so by recompiling. Not sure whether anyone has any updates on this. http://aspn.activestate.com/ASPN/Mail/Message/perl-DBI-Dev/2241467 http://search.cpan.org/~jwied/Msql-Mysql-modules-1.2219/mysql/lib/DBD/my sql.pm#MULTITHREADING Paul * Gloucester Research Limited believes the information provided herein is reliable. While every care has been taken to ensure accuracy, the information is furnished to the recipients with no warranty as to the completeness and accuracy of its contents and on condition that any errors or omissions shall not be made the basis for any claim, demand or cause for action. * ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
voice
Hi,
I have tried the following script under Windows 2000 (probably SAPI 4), but
it doesn't speak anything.
Can you give me the right code?
Thank you much.
Teddy
use strict;
use Win32::OLE;
my $voice = Win32::OLE-new(Speech.VoiceText);
$voice-Register('', 'Perl');
$voice-speak(hello world);
STDIN;# wait til it finishes speaking
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: voice
Hi,
Octavian Rasnita wrote:
Hi,
I have tried the following script under Windows 2000 (probably SAPI 4), but
it doesn't speak anything.
Can you give me the right code?
Thank you much.
Teddy
use strict;
use Win32::OLE;
my $voice = Win32::OLE-new(Speech.VoiceText);
$voice-Register('', 'Perl');
$voice-speak(hello world);
STDIN;# wait til it finishes speaking
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Take a look at
http://opensource.activestate.com/authors/jandubois/Perl/TPC3/fun.html#Can_I_access_COM_OLE_objects_f
and
http://www.archivum.info/perl-win32-users@listserv.activestate.com/2005-06/msg00126.html
regards,
Reinhard
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: comparing floating point numbers
<>Robert's solution (rounding with sprintf) is pretty good, except
it requires that you
know something about the numbers. For example, they must differ by more
than 0.01 to
be considered different. What happens when the two numbers are;
0.101
0.100
Now you need to check for differences beyond 0.1, actually
0.001
Perhaps a better way, one that doesn't require any knowledge of the
range of the numbers,
is to check the ratio of the two numbers. This should eliminate (or
reduce) the dependence
on their magnitudes. So, instead of comparing the original numbers (or
the rounded
numbers) compare their ratio;
abs(1-$sum1/$sum2) = 1e-12
If the numbers are "equal", the ratio will be something like
0.99 or 1.01,
depending on which of the two numbers is bigger. The abs and "1-"
removes the dependence
on which of the two numbers is bigger, and shifts the value to near
zero, giving a single
result such as 0.01.
On my Winblows 98 machine the difference between the two numbers is
-2.8421709430404e-014
So a cutoff value of 1e-12 is probably suitable. Other platforms may
need a different cutoff value
depending on their native precision. I suspect 1e-10 might be a good,
platform independent, value.
use strict; ## added
my $sum1 = -237.15;
my $sum2;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
print("sum1 = $sum1\n");
print("sum2 = $sum2\n");
print "Difference =".($sum1-$sum2)."\n"; ## what is the actual
diff between the numbers?
print "Ratio = ".($sum1/$sum2)."\n";
print "(1-Ratio) = ".(1-$sum1/$sum2)."\n\n";
if ( abs(1-$sum1/$sum2) = 1e-12 ) { ## new test
print("EQUAL\n");
} else {
print("NOT EQUAL\n");
}
-
OUTPUT:
sum1 = -237.15
sum2 = -237.15
Difference =-2.8421709430404e-014
Ratio = 1
(1-Ratio) = -2.22044604925031e-016
EQUAL
J. Sluka
InPharmix Inc.
robert wrote:
use "sprintf" to set the floating point field to 2 decimal places. (or
more, if you want them...)
$float1=-135.176 # final values before rounding
$float2=-135.184
$float1=sprintf("%.2f",$float1);# force $float1 to be rounded at 2
decimal places
$float2=sprintf("%.2f",$float2);# ditto $float2
print "$float1\n$float2\n";
if ($float1 == $float2) {
print " values are EQUAL\n";
}
else { print " values are NOT EQUAL\n"; }
the example above will return
-135.18
-135.18
values are EQUAL
change
$float1 = 255.733
$float2 = 255.735
and this will return
255.73
255.74
values are NOT EQUAL
-Original Message-
From: John Deighan
my $sum1 = -237.15;
my $sum2;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
$sum2 += -26.35;
print("sum1 = $sum1\n");
print("sum2 = $sum2\n");
if ($sum1 == $sum2) {
print("EQUAL\n");
}
else {
print("NOT EQUAL\n");
}
OUTPUT:
sum1 = -237.15
sum2 = -237.15
NOT EQUAL
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
re: comparing floating point numbers
this is top-posted because it doesn't follow from any one of the previous posts. just a warning to be careful of subtracting or dividing similar numbers in floating point and what your expectations are for the results. google for 'catastrophic loss of precision' or similar, or check out the floating point standard (IEEE #754) for why these fall apart. *most* tests of equality, or relative size, in *most* architectures, map to subtractions by the time they get the processor. watch out. just a tuppence / 2 eurocents worth. ed c ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: references
hello again,
hello all,
here is a ref/deref problem
I need to take a socket handle, convert it to a socket ref, then a scaler
string
A bit later in the same script, I need to take that scaler string and turn
it
back to a socket ref, and deref it back to the socket handle.
Maybe instead of asking for the way to implement your solution, you should
describe the complete problem and see if we can come up with an alternate
solution that is a little less convoluted. :)
let me clarify my problem.
I have a reference of a subroutine.
eg.
$sub = test;
..deref and execute
$sub;
...
sub test {
my ($sockethandle,$blah...) = @_;
..do something
}
in order to pass the paramenters, i decided to do this :
sub main {
my $sub = test|$sockethandle;
($sub,@_) = split(/\|/,$sub);
$sub;
}
if this is to work correctly, I need to take a socket handle, convert it to a
socket ref, then a scaler, so i can pass it as a parameter. in order to use the
socket later, i have to take the scaler, convert it to the socket ref, then
dereference it.
Is there an easier way to pass parameters with a subroutine reference?
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
references situation
hello again,
hello all,
here is a ref/deref problem
I need to take a socket handle, convert it to a socket ref, then a scaler
string
A bit later in the same script, I need to take that scaler string and turn
it
back to a socket ref, and deref it back to the socket handle.
Maybe instead of asking for the way to implement your solution, you should
describe the complete problem and see if we can come up with an alternate
solution that is a little less convoluted. :)
let me clarify my problem.
I have a reference of a subroutine.
eg.
$sub = test;
..deref and execute
$sub;
...
sub test {
my ($sockethandle,$blah...) = @_;
..do something
}
in order to pass the paramenters, i decided to do this :
sub main {
my $sub = test|$sockethandle;
($sub,@_) = split(/\|/,$sub);
$sub;
}
if this is to work correctly, I need to take a socket handle, convert it to a
socket ref, then a scaler, so i can pass it as a parameter. in order to use the
socket later, i have to take the scaler, convert it to the socket ref, then
dereference it.
Is there an easier way to pass parameters with a subroutine reference?
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: comparing floating point numbers
Ed Chester [EMAIL PROTECTED] wrote: just a warning to be careful of subtracting or dividing similar numbers in floating point and what your expectations are for the results. google for 'catastrophic loss of precision' or similar, or check out the floating point standard (IEEE #754) for why these fall apart. *most* tests of equality, or relative size, in *most* architectures, map to subtractions by the time they get the processor. watch out. Ed, a cursory look at the search results from Google produced a bunch of items that specifically referred to the floating point Error in the first batch of Pentium chips. As this has been corrected, are there other occurrences of 'catastrophic loss of precision' that can be tested using modern Pentiums (e.g. II - IV) or AMD chips? Some URLs would be helpful here. Thanks. -- Mike Arms ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: references
Why not make it a hash?
my $sub = { ref = \test, params = [$sockethandle] };
$sub-{ref}-(@{$sub-{params}});
sub test {
my $socket = shift;
# ...
}
- Original Message -
From: [EMAIL PROTECTED]
To: $Bill Luebkert [EMAIL PROTECTED]
Cc: perl-win32-users@listserv.ActiveState.com
Sent: Monday, July 25, 2005 8:19 PM
Subject: Re: references
hello again,
hello all,
here is a ref/deref problem
I need to take a socket handle, convert it to a socket ref, then a
scaler
string
A bit later in the same script, I need to take that scaler string and
turn
it
back to a socket ref, and deref it back to the socket handle.
Maybe instead of asking for the way to implement your solution, you
should
describe the complete problem and see if we can come up with an
alternate
solution that is a little less convoluted. :)
let me clarify my problem.
I have a reference of a subroutine.
eg.
$sub = test;
..deref and execute
$sub;
...
sub test {
my ($sockethandle,$blah...) = @_;
..do something
}
in order to pass the paramenters, i decided to do this :
sub main {
my $sub = test|$sockethandle;
($sub,@_) = split(/\|/,$sub);
$sub;
}
if this is to work correctly, I need to take a socket handle, convert it
to a
socket ref, then a scaler, so i can pass it as a parameter. in order to
use the
socket later, i have to take the scaler, convert it to the socket ref,
then
dereference it.
Is there an easier way to pass parameters with a subroutine reference?
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
text-to-speech
Hi,
I have found the following script example that can speak a text using the
standard MS text-to-speech sinthesizer.
It works fine.
I am using Windows 2000, and I have the Narrator screen reader installed and
it uses MS text-to-speech, but I have also installed IBM ViaVoice
sinthesizer for Windows, and I can use it with Narrator.
I am wondering if it is also possible to create a perl program that uses
ViaVoice sinthesizer under Windows, because ViaVoice is also SAPI compliant,
just like MS text-to-speech sinth.
I have tried (like in the example below) to replace the class ID of MS
text-to-speech with the Registry class ID of Viavoice, but it doesn't work,
giving an error that tells that the Speak method cannot be applied to an
undef variable.
I would like to use Viavoice, because it is more clear than MS
text-to-speech, and I am blind, so I would like to use it in some
applications.
Thank you very much.
Teddy
use Win32::OLE qw( EVENTS );
my $DirectSS =
new Win32::OLE( {EEE78591-FE22-11D0-8BEF-0060081841DE} );
#I have also tried this class ID from Registry for Viavoice:
##new Win32::OLE( {9657E2E0-F99F-11d2-A420-00203521503F} );
$DirectSS-Speak(Good evening, Mr. Anderson. How's your day been? G
+od. Well, listen, I'm going to have to ask you to be assimilated
+ into the Borg because, yeah, resistance is futile. Oh, and about th
+ose TPS reports. Yeah, didja get that memo? You see, we're putting
+new cover sheets on all our TPS reports. By the way, I've taken the
+liberty of searching, searching, searching out. your domain controlle
+rs. It seems they're named charles and michael. or should i say, we
+re? cuz now they're pete and repeat. yeah. how do you like that?
+by the way, if pete and repeat are in a boat and pete jumps out,
who's left? Ok, i'll say it again. if pete and repeat are in a boat
+and pete jumps out, who's left? that was a little borg humor for you
+. most people don't know about it, but we can be a regular barrel of
+ laughs when we want to. and remember: anything is possible, except
+skiing through a revolving door. Because then where would we be? no
+where, that's where. by the way, you're logged in as . getlogin .
+. We Borg know that kind of stuff. It's what we do, so we have to
+be good at it. and we are. we're really good. really good. really
+, really good. in fact, so good that we know that everything about yo
+ur computer. everything. have a pleasant remainder of your day. ch
+eers from the borg.
);
while( $DirectSS-{Speaking} )
{
Win32::OLE-SpinMessageLoop();
Win32::Sleep( 100 );
}
Teddy
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
(Was Re: comparing floating point numbers) now [OT]: catastrophic cancellation
Mike wrote: [snipped] items that specifically referred to the floating point Error in the first batch of Pentium chips Sorry, I should have narrowed the search then. This is not specific to that error, it is a consequence of the FP number system representation. It arises in certain circumstances, but ones that are not uncommon. I just wanted to flag that people could be more aware of what really happens at a hardware/number representation level when they want to divide / compare / subtract similar numbers, so they can watch for pitfalls. As far as possible, avoid floating point divides. They're ugly, and they're slow. I spent too long designing alternative representations that avoid this, so its one of my soap boxes when people complain that compares don't work as they expect. other occurrences of 'catastrophic loss of precision' that can be tested using modern Pentiums Absolutely. I don't have any code to demo this, but will try to find some slacktime to rustle something up. Any of the URIs below will probably give you the idea. Some URLs would be helpful here. Thanks. Sure OK, here goes: (shout if you need more) http://www.cse.msu.edu/~cse320/Documents/FloatingPoint.pdf http://www.cs.princeton.edu/introcs/91float/ (and scroll down to catastrophic cancellation) http://cs-www.bu.edu/faculty/djy/cs210/unit06.html (see section 'Cancellation Error') http://www.math.uu.se/~warwick/summer04/material/reading/rump2.pdf (if you really want the theory) http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/393090 (from activestate, a Python example) ed c ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: text-to-speech
I would like to use Viavoice, because it is more clear than MS text-to-speech, and I am blind, so I would like to use it in some applications. Teddy Um Not to be insensitive. But this makes no sense at all. If you are blind to the point that you need to have text narrated, how do you manage to program? - Chris ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
references of sub and params in a threads::shared variable
how do i use this hash as a shared variable to be used in threads?
eg. with threads::shared
-Jeremy A
Why not make it a hash?
my $sub = { ref = \test, params = [$sockethandle] };
$sub-{ref}-(@{$sub-{params}});
sub test {
my $socket = shift;
# ...
}
hello again,
hello all,
here is a ref/deref problem
I need to take a socket handle, convert it to a socket ref, then a
scaler
string
A bit later in the same script, I need to take that scaler string and
turn
it
back to a socket ref, and deref it back to the socket handle.
Maybe instead of asking for the way to implement your solution, you
should
describe the complete problem and see if we can come up with an
alternate
solution that is a little less convoluted. :)
let me clarify my problem.
I have a reference of a subroutine.
eg.
$sub = test;
..deref and execute
$sub;
...
sub test {
my ($sockethandle,$blah...) = @_;
..do something
}
in order to pass the paramenters, i decided to do this :
sub main {
my $sub = test|$sockethandle;
($sub,@_) = split(/\|/,$sub);
$sub;
}
if this is to work correctly, I need to take a socket handle, convert it
to a
socket ref, then a scaler, so i can pass it as a parameter. in order to
use the
socket later, i have to take the scaler, convert it to the socket ref,
then
dereference it.
Is there an easier way to pass parameters with a subroutine reference?
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: voice
Octavian Rasnita wrote:
Hi,
I have tried the following script under Windows 2000 (probably SAPI 4), but
it doesn't speak anything.
Can you give me the right code?
This works for me and you may need to D/L the speech SDK (see notes at end):
#!perl -w --
use strict;
use Win32;
use Win32::OLE;
our %A; # get commandline switches into %A
for (my $ii = 0; $ii @ARGV; ) {
last if $ARGV[$ii] =~ /^--$/;
if ($ARGV[$ii] !~ /^-{1,2}(.*)$/) { $ii++; next; }
my $arg = $1; splice @ARGV, $ii, 1;
if ($arg =~ /^([\w]+)=(.*)$/) { $A{$1} = $2; } else { $A{$1}++; }
}
my $XP = 0;
$XP = 1 if $^O =~ /Win32/i and Win32::GetOSName() =~ /XP/;
my $class = $XP ? SAPI.SpVoice : Speech.VoiceText;
my $debug = $A{d} || 0;
my $use_tie = $A{t} || 0;
my $text = It is now . scalar (localtime) . \n;
$text = join ' ', @ARGV if @ARGV;
print XP=$XP; text=$text\n if $debug;
if ($use_tie) {
tie *SPEECH, 'Speech'; END { untie *SPEECH; }
print SPEECH $text;
} else {
my $voice = Win32::OLE-new($class) or die new $class: $! ($^E);
# $voice-Register('', 'Perl');
$voice-speak($text);
}
exit;
#- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
package Speech;
sub TIEHANDLE {
my $voice = Win32::OLE-new($class) or die new $class: $! ($^E);
# $voice-Register('', 'Perl');
print Tieing class $class to $_[0]\n if $debug;
bless \$voice = shift;
}
sub PRINT {
my $voice = shift;
print Speaking $text\n if $debug;
$$voice-Speak($text, 0);
}
sub DESTROY {
my $voice = shift;
print In destroy\n if $debug;
if ($XP) {
my $ret = $$voice-WaitUntilDone(1);
# print ret=, $ret ? 'finished' : 'killed', \n;
} else {
sleep (1) while $$voice-IsSpeaking;
}
}
__END__
Notes:
Speech SDK:
http://www.microsoft.com/speech/download/sdk51/
http://download.microsoft.com/download/speechSDK/SDK/5.1/WXP/EN-US/speechsdk51.exe
--
,-/- __ _ _ $Bill LuebkertMailto:[EMAIL PROTECTED]
(_/ / )// // DBE CollectiblesMailto:[EMAIL PROTECTED]
/ ) /-- o // // Castle of Medieval Myth Magic http://www.todbe.com/
-/-' /___/__/_/_http://dbecoll.tripod.com/ (My Perl/Lakers stuff)
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: references
[EMAIL PROTECTED] wrote:
hello again,
let me clarify my problem.
I have a reference of a subroutine.
eg.
$sub = test;
Better expressed like this:
my $subref = \test;
..deref and execute
$sub;
...
sub test {
my ($sockethandle,$blah...) = @_;
..do something
}
in order to pass the paramenters, i decided to do this :
sub main {
my $sub = test|$sockethandle;
($sub,@_) = split(/\|/,$sub);
$sub;
}
if this is to work correctly, I need to take a socket handle, convert it to a
socket ref, then a scaler, so i can pass it as a parameter. in order to use
the
socket later, i have to take the scaler, convert it to the socket ref, then
dereference it.
Is there an easier way to pass parameters with a subroutine reference?
Just pass a ref rather than concatenating scalar strings together.
use strict;
use warnings;
my $subref = \test;# reference to sub
$subref (\*STDOUT, test args\n); # pass FH ref and string
sub test {
my ($FH, $blah) = @_;
print $FH $blah;
}
__END__
--
,-/- __ _ _ $Bill LuebkertMailto:[EMAIL PROTECTED]
(_/ / )// // DBE CollectiblesMailto:[EMAIL PROTECTED]
/ ) /-- o // // Castle of Medieval Myth Magic http://www.todbe.com/
-/-' /___/__/_/_http://dbecoll.tripod.com/ (My Perl/Lakers stuff)
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: voice
Sisyphus wrote: speak() needs a second argument. Make it: $voice-speak(hello world, 0); With that change in place, it works ok for me on Windows 2000. Works for me with/without a second arg (using 'SAPI.SpVoice' class on XP). -- ,-/- __ _ _ $Bill LuebkertMailto:[EMAIL PROTECTED] (_/ / )// // DBE CollectiblesMailto:[EMAIL PROTECTED] / ) /-- o // // Castle of Medieval Myth Magic http://www.todbe.com/ -/-' /___/__/_/_http://dbecoll.tripod.com/ (My Perl/Lakers stuff) ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: references
Why don't you pass the parameters as references.
They work like pointers in C kindof.
Why do you want to reference your subroutine?
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of [EMAIL PROTECTED]
Sent: Tuesday, July 26, 2005 2:19 AM
To: $Bill Luebkert
Cc: perl-win32-users@listserv.ActiveState.com
Subject: Re: references
hello again,
hello all,
here is a ref/deref problem
I need to take a socket handle, convert it to a socket
ref, then a
scaler
string
A bit later in the same script, I need to take that scaler string
and turn
it
back to a socket ref, and deref it back to the socket handle.
Maybe instead of asking for the way to implement your solution, you
should describe the complete problem and see if we can come
up with an
alternate solution that is a little less convoluted. :)
let me clarify my problem.
I have a reference of a subroutine.
eg.
$sub = test;
..deref and execute
$sub;
...
sub test {
my ($sockethandle,$blah...) = @_;
..do something
}
in order to pass the paramenters, i decided to do this :
sub main {
my $sub = test|$sockethandle;
($sub,@_) = split(/\|/,$sub);
$sub;
}
if this is to work correctly, I need to take a socket handle,
convert it to a
socket ref, then a scaler, so i can pass it as a parameter.
in order to use the
socket later, i have to take the scaler, convert it to the
socket ref, then
dereference it.
Is there an easier way to pass parameters with a subroutine
reference?
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: references of sub and params in a threads::shared variable
Yup.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of [EMAIL PROTECTED]
Sent: Tuesday, July 26, 2005 6:10 AM
To: Siebe Tolsma
Cc: perl-win32-users@listserv.ActiveState.com
Subject: references of sub and params in a threads::shared variable
how do i use this hash as a shared variable to be used in
threads? eg. with threads::shared
-Jeremy A
Why not make it a hash?
my $sub = { ref = \test, params = [$sockethandle] };
$sub-{ref}-(@{$sub-{params}});
sub test {
my $socket = shift;
# ...
}
hello again,
hello all,
here is a ref/deref problem
I need to take a socket handle, convert it to a
socket ref, then
a
scaler
string
A bit later in the same script, I need to take that scaler
string and
turn
it
back to a socket ref, and deref it back to the socket handle.
Maybe instead of asking for the way to implement your solution,
you
should
describe the complete problem and see if we can come up with an
alternate
solution that is a little less convoluted. :)
let me clarify my problem.
I have a reference of a subroutine.
eg.
$sub = test;
..deref and execute
$sub;
...
sub test {
my ($sockethandle,$blah...) = @_;
..do something
}
in order to pass the paramenters, i decided to do this :
sub main {
my $sub = test|$sockethandle;
($sub,@_) = split(/\|/,$sub);
$sub;
}
if this is to work correctly, I need to take a socket handle,
convert it
to a
socket ref, then a scaler, so i can pass it as a
parameter. in order
to
use the
socket later, i have to take the scaler, convert it to the socket
ref,
then
dereference it.
Is there an easier way to pass parameters with a subroutine
reference?
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: comparing floating point numbers
Hello Mike I just saw this site referenced today, they have a large list of other sites: http://www-128.ibm.com/developerworks/library/pa-bigiron1/?ca=dnt-65 Also look at the web site for Mike Cowlishaw who wrote software packages to deal with Decimal Floating-Point. See also a Dr Dobbs for an article on this with Java by Mike Cowlishaw and a joint author from Sun. http://www2.hursley.ibm.com/mfcsumm.html len - Original Message - From: Arms, Mike [EMAIL PROTECTED] To: Ed Chester [EMAIL PROTECTED]; perl-win32-users@listserv.ActiveState.com Sent: Monday, July 25, 2005 3:39 PM Subject: RE: comparing floating point numbers Ed Chester [EMAIL PROTECTED] wrote: just a warning to be careful of subtracting or dividing similar numbers in floating point and what your expectations are for the results. google for 'catastrophic loss of precision' or similar, or check out the floating point standard (IEEE #754) for why these fall apart. *most* tests of equality, or relative size, in *most* architectures, map to subtractions by the time they get the processor. watch out. Ed, a cursory look at the search results from Google produced a bunch of items that specifically referred to the floating point Error in the first batch of Pentium chips. As this has been corrected, are there other occurrences of 'catastrophic loss of precision' that can be tested using modern Pentiums (e.g. II - IV) or AMD chips? Some URLs would be helpful here. Thanks. -- Mike Arms ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: comparing floating point numbers
-Original Message- From: James Sluka Sent: Monday, July 25, 2005 9:11 AM Robert's solution (rounding with sprintf) is pretty good, except it requires that you know something about the numbers. you are correct about the limitations of floating point accuracy, but in this case you are making it unnecessarily complicated. John (the original poster) is adding a batch of floating point values that only have two decimal places. from his specific example, it does not appear that he needs or wants more accuracy than than the one one-hundredth place. for just two (or three or four or six!) decimal places, he doesnt need to worry about IEEE floating point standards, or the specifics of his architecture. For example, they must differ by more than 0.01 to be considered different. not quite. example, when rounding to nearest 1/100th: 1.104 and 1.105 are different. this .001 difference is the minimum that can ever be measured as different. 1.105 and 1.114 are the same. this .009 difference is the maximum that can ever be measured as the same certainly there are Other Ways To Do It (tm) -- and probably better ways to do it -- but this method will always work for these types of numbers. ... Finally, if you're trying to do higher math functions that push the limits of your processor and/or require references to floating point standards, I'd say you probably shouldnt be using Perl. ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: raj's serial port question
-Original Message- From: Rajesh Vattem Sent: Monday, July 25, 2005 7:21 AM Hi, I am using Win32 serial port APIs in Active perl 5.8.2 for opening COM port. I am getting this error when I open the COM port with a different baud rate (eg: 921600). It works fine with baud rate 115200. 921600 ?? is that the speed you are trying to communicate serially at? Is such a serial port speed even possible, or is that a typo? at any rate, Win32::SerialPort is limited by its Win32API::CommPort dependency, which I am almost certain has a maximum speed of 128K I've never seen Win32::SerialPort run at anything faster than 115200. and I've had some problems with serial modems over 56K these modules were stablized about six years ago, and I dont think theyve been updated since. Serial-Port communication is kind of trailing-edge technology these days. --robert The way I open the COM port is print STDOUT Number of testcases: $ARGV[0]\n; $config_file = ..\\config\\uelog_port_settings.cfg; # uelog_port_settings.cfg contains the # configuration parameters for the COM port to $uelog_port_hndle = Win32::SerialPort-start ($config_file) or print Can't open Serial port for UE log $config_file; Regards, Rajesh. ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Split function in Perl
-BEGIN PGP SIGNED MESSAGE- Hash: SHA512 Hello, I have a problem with the split function. string - - - one two three four five six seven should be split to - - - one two three four five six seven string - - - one two three four five six seven should be split to - - - one two three four five six seven the difference is the string enclosed withis considered as 1 string even with spaces. Thanks, Michael Louie Loria -BEGIN PGP SIGNATURE- Comment: Public Key: https://www.biglumber.com/x/web?qs=0x4A256EC8 Comment: Public Key: http://www.lorztech.com/GPG.txt Comment: Yahoo ID: michaellouieloria iQEVAwUBQuZ7drXBHi2y3jwfAQqL6QgAiROSQrYOyuoITOPNsSxdtYT4VLDeEy6u LFGQlEcdX2b4nkcPkmNcOEbt6qlnWHjnhQwODEH34+BjIpgAb/7yrIxmlQRPnmnj /4O4x0YnFa71Gl7jUwythyv3gDeBo12x6GA+SZU/sdNL0IbDGu1qe0aXxEL7dt0I kveNDhglPqihuWmAG6cqb0CatkV9na9Fg/whsfHbwIGPY4fYCSPi7GzXT+M/K0Mi yGslp31ibW4ZVWtDm+v6g8dV4RFiKfSSpk8c65S7i384vU0RdhdPMu6Qww2U4PYa yKdLLZ49XTG7AbMHiF/r6VUMf8rUJ0vE0I83uH1hAGI+x40K2tqiag== =icS0 -END PGP SIGNATURE- Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: references - inject sub/params into longterm running thread
hi there
basically...I have instantiated long term running thread/s.
in the main thread, i want to pass a subroutine (code ref) and its parameters
into a threads::shared variable, then execute it in a separate thread running
in a while loop.
I want to do this, because having a group of a couple instantiated long term
running threads, before processing starts, would be less expensive, then
instantiated many short term threads for each call...which would be expensive
and affect performance due to the lag in thread creation.
calls and subroutine's/parameters will vary, so injecting the code into a
running thread is what i would like.
I hope you all now can understand. Thanks in advance for your help.
Regards,
- Jeremy A.
Quoting John Serink [EMAIL PROTECTED]:
Why don't you pass the parameters as references.
They work like pointers in C kindof.
Why do you want to reference your subroutine?
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of [EMAIL PROTECTED]
Sent: Tuesday, July 26, 2005 2:19 AM
To: $Bill Luebkert
Cc: perl-win32-users@listserv.ActiveState.com
Subject: Re: references
hello again,
hello all,
here is a ref/deref problem
I need to take a socket handle, convert it to a socket
ref, then a
scaler
string
A bit later in the same script, I need to take that scaler string
and turn
it
back to a socket ref, and deref it back to the socket handle.
Maybe instead of asking for the way to implement your solution, you
should describe the complete problem and see if we can come
up with an
alternate solution that is a little less convoluted. :)
let me clarify my problem.
I have a reference of a subroutine.
eg.
$sub = test;
..deref and execute
$sub;
...
sub test {
my ($sockethandle,$blah...) = @_;
..do something
}
in order to pass the paramenters, i decided to do this :
sub main {
my $sub = test|$sockethandle;
($sub,@_) = split(/\|/,$sub);
$sub;
}
if this is to work correctly, I need to take a socket handle,
convert it to a
socket ref, then a scaler, so i can pass it as a parameter.
in order to use the
socket later, i have to take the scaler, convert it to the
socket ref, then
dereference it.
Is there an easier way to pass parameters with a subroutine
reference?
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: Split function in Perl
http://search.cpan.org/~nwclark/perl-5.8.7/lib/Text/ParseWords.pm -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Michael Louie Loria Sent: Monday, July 25, 2005 9:57 PM To: perl-win32-users@listserv.ActiveState.com Subject: Split function in Perl -BEGIN PGP SIGNED MESSAGE- Hash: SHA512 Hello, I have a problem with the split function. string - - - one two three four five six seven should be split to - - - one two three four five six seven string - - - one two three four five six seven should be split to - - - one two three four five six seven the difference is the string enclosed withis considered as 1 string even with spaces. Thanks, Michael Louie Loria -BEGIN PGP SIGNATURE- Comment: Public Key: https://www.biglumber.com/x/web?qs=0x4A256EC8 Comment: Public Key: http://www.lorztech.com/GPG.txt Comment: Yahoo ID: michaellouieloria iQEVAwUBQuZ7drXBHi2y3jwfAQqL6QgAiROSQrYOyuoITOPNsSxdtYT4VLDeEy6u LFGQlEcdX2b4nkcPkmNcOEbt6qlnWHjnhQwODEH34+BjIpgAb/7yrIxmlQRPnmnj /4O4x0YnFa71Gl7jUwythyv3gDeBo12x6GA+SZU/sdNL0IbDGu1qe0aXxEL7dt0I kveNDhglPqihuWmAG6cqb0CatkV9na9Fg/whsfHbwIGPY4fYCSPi7GzXT+M/K0Mi yGslp31ibW4ZVWtDm+v6g8dV4RFiKfSSpk8c65S7i384vU0RdhdPMu6Qww2U4PYa yKdLLZ49XTG7AbMHiF/r6VUMf8rUJ0vE0I83uH1hAGI+x40K2tqiag== =icS0 -END PGP SIGNATURE- Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: references - inject sub/params into longterm running thread
If you use shared arrays or hashes, Win32 perl will leak handles if you
use threads.
It will leak 2 handles per thread. If you're only starting say a couple
of threads an hour, no problem. If you're starting hindreds, within a
week or so, you'll run out of resource space for the process and it will
crash.
The leaking handles is a known bug when using threads on Win32.
Cheers,
John
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 26, 2005 11:20 AM
To: perl-win32-users@listserv.ActiveState.com
Cc: John Serink
Subject: RE: references - inject sub/params into longterm
running thread
hi there
basically...I have instantiated long term running thread/s.
in the main thread, i want to pass a subroutine (code ref)
and its parameters
into a threads::shared variable, then execute it in a
separate thread running
in a while loop.
I want to do this, because having a group of a couple
instantiated long term
running threads, before processing starts, would be less
expensive, then
instantiated many short term threads for each call...which
would be expensive
and affect performance due to the lag in thread creation.
calls and subroutine's/parameters will vary, so injecting the
code into a
running thread is what i would like.
I hope you all now can understand. Thanks in advance for your help.
Regards,
- Jeremy A.
Quoting John Serink [EMAIL PROTECTED]:
Why don't you pass the parameters as references.
They work like pointers in C kindof.
Why do you want to reference your subroutine?
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of [EMAIL PROTECTED]
Sent: Tuesday, July 26, 2005 2:19 AM
To: $Bill Luebkert
Cc: perl-win32-users@listserv.ActiveState.com
Subject: Re: references
hello again,
hello all,
here is a ref/deref problem
I need to take a socket handle, convert it to a socket
ref, then a
scaler
string
A bit later in the same script, I need to take that scaler
string
and turn
it
back to a socket ref, and deref it back to the socket handle.
Maybe instead of asking for the way to implement your solution,
you
should describe the complete problem and see if we can come
up with an
alternate solution that is a little less convoluted. :)
let me clarify my problem.
I have a reference of a subroutine.
eg.
$sub = test;
..deref and execute
$sub;
...
sub test {
my ($sockethandle,$blah...) = @_;
..do something
}
in order to pass the paramenters, i decided to do this :
sub main {
my $sub = test|$sockethandle;
($sub,@_) = split(/\|/,$sub);
$sub;
}
if this is to work correctly, I need to take a socket handle,
convert it to a
socket ref, then a scaler, so i can pass it as a parameter.
in order to use the
socket later, i have to take the scaler, convert it to the
socket ref, then
dereference it.
Is there an easier way to pass parameters with a subroutine
reference?
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
Re: references - inject sub/params into longterm running thread
[EMAIL PROTECTED] wrote: hi there basically...I have instantiated long term running thread/s. in the main thread, i want to pass a subroutine (code ref) and its parameters into a threads::shared variable, then execute it in a separate thread running in a while loop. I want to do this, because having a group of a couple instantiated long term running threads, before processing starts, would be less expensive, then instantiated many short term threads for each call...which would be expensive and affect performance due to the lag in thread creation. calls and subroutine's/parameters will vary, so injecting the code into a running thread is what i would like. I hope you all now can understand. Thanks in advance for your help. We're getting closer. Now create a proper test snippet that uses threads and we'll see if we can help where it fails. -- ,-/- __ _ _ $Bill LuebkertMailto:[EMAIL PROTECTED] (_/ / )// // DBE CollectiblesMailto:[EMAIL PROTECTED] / ) /-- o // // Castle of Medieval Myth Magic http://www.todbe.com/ -/-' /___/__/_/_http://dbecoll.tripod.com/ (My Perl/Lakers stuff) ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: raj's serial port question
-Original Message- From: Rajesh Vattem Sent: Monday, July 25, 2005 9:19 PM Hi Robert, If you open a hyper terminal and see the baud rate supported you can see that 921600 is a supported value. If I use a USB to serial converter to support such speed, is there any perl module which I can use? Thanks for your time, Regards, Rajesh Hi Rajesh, yes you're right: 921600 sure is supported by hyperterminal on WinXP. i only use serial communication on Win98 machines at work, and i dont remember ever seeing it that high. anyhow, im still pretty sure the Win32API perl module only supports 128K maximum. I see there is a Device::USB module on CPAN, but it appears to be very recent and the only review available says it failed installation. whats more, it appears to be dependent on a certain libusb package which is still in development *and* Linux-specific. my only experience with USB/Serial converters has been one of frustration, but admittedly i never really worked with it much. so... I think you will have a difficult time, but maybe it is possible. The only thing i can say for certain is that I Really Have No Idea. Sorry :-( I am posting this back the the Win32-Users distribution list, because I hope that maybe someone else will have more experience in this area, and they can help you. Good luck to you, I know how frustrating these things can be. --robert -Original Message- From: robert Sent: Tuesday, July 26, 2005 7:53 AM -Original Message- From: Rajesh Vattem Sent: Monday, July 25, 2005 7:21 AM Hi, I am using Win32 serial port APIs in Active perl 5.8.2 for opening COM port. I am getting this error when I open the COM port with a different baud rate (eg: 921600). It works fine with baud rate 115200. 921600 ?? is that the speed you are trying to communicate serially at? Is such a serial port speed even possible, or is that a typo? at any rate, Win32::SerialPort is limited by its Win32API::CommPort dependency, which I am almost certain has a maximum speed of 128K I've never seen Win32::SerialPort run at anything faster than 115200. and I've had some problems with serial modems over 56K these modules were stablized about six years ago, and I dont think theyve been updated since. Serial-Port communication is kind of trailing-edge technology these days. --robert ___ Perl-Win32-Users mailing list Perl-Win32-Users@listserv.ActiveState.com To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
RE: Split function in Perl
-Original Message-
From: $Bill Luebkert
Sent: Monday, July 25, 2005 9:30 PM
s/([^]+) ([^]+)/$1\000$2/g;
holy cow. can you explain that substitution? my brain just about
popped.
my @a = split / +/;
foreach (@a) {
s/\000/ /g; # restore embedded spaces
print $_\n;
}
__END__
___
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
