Re: Is this correct? print syntax
On Oct 11, Michael Fowler said:
>> if (condition) {
>> print FILEHANDLE list, of, stuff;
>> next;
>> }
>
>I agree. It's much more readable.
I rarely do that. Unless the body of the block is going to be enormous, I
do it without the block. However, I think print(FOO @list) looks really
odd, so I'd probably do
(print FOO @list), next if $condition;
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Re: Is this correct? print syntax
In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] (Michael Fowler) writes: >On Fri, Oct 11, 2002 at 01:50:53PM -0500, James Edward Gray II wrote: >> It's the indirect method call syntax, as far as I understand. > >It looks like it, but it isn't. See >http:[EMAIL PROTECTED]/msg33969.html for a recent >discussion on that. It's an indirect filehandle syntax, which is close. There's some interesting stuff here: $ perldoc -q indirect Found in /usr/lib/perl5/5.6.1/pod/perlfaq5.pod How can I use a filehandle indirectly? [...] -- Peter Scott http://www.perldebugged.com -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Is this correct? print syntax
In article <[EMAIL PROTECTED]>,
[EMAIL PROTECTED] (Jeff 'Japhy' Pinyan) writes:
>
>>> if (condition) {
>>> print FILEHANDLE list, of, stuff;
>>> next;
>>> }
>>
>I rarely do that. Unless the body of the block is going to be enormous, I
>do it without the block. However, I think print(FOO @list) looks really
>odd, so I'd probably do
>
> (print FOO @list), next if $condition;
The parens feel funny to me. I usually write this as
print FOO @list and next if $condition;
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Peter Scott
http://www.perldebugged.com
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Re: Is this correct? print syntax
On Fri, Oct 11, 2002 at 01:50:53PM -0500, James Edward Gray II wrote:
> It's the indirect method call syntax, as far as I understand.
It looks like it, but it isn't. See
http:[EMAIL PROTECTED]/msg33969.html for a recent
discussion on that.
> Personally though, I wouldprefer to see your example as:
>
> if (condition) {
> print FILEHANDLE list, of, stuff;
> next;
> }
I agree. It's much more readable.
Michael
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Re: Is this correct? print syntax
On Friday, October 11, 2002, at 05:01 PM, Michael Fowler wrote: > On Fri, Oct 11, 2002 at 01:50:53PM -0500, James Edward Gray II wrote: >> It's the indirect method call syntax, as far as I understand. > > It looks like it, but it isn't. See > http:[EMAIL PROTECTED]/msg33969.html for a > recent > discussion on that. Thanks for the correction. Sorry, about the misinformation. James -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Is this correct? print syntax
Nikola Janceski wrote: > I need them.. for > > > print FILEHANDLE (list, of, stuff), next if (condition); > you probably just want: print FILEHANDLE qw(list of stuff) and next if(condition); david -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Is this correct? print syntax
At 3:05 PM -0400 10/11/02, James Edward Gray II wrote: >>> print FILEHANDLE (list, of, stuff), next if (condition); >> >> print FILEHANDLE (list, of, stuff); >> next if (condition); >But these two examples don't behave the same. The first one prints >and calls next, only on the condition. The second one always prints >and then calls next, if the condition is true. You're right James. I saw that from your earlier letter that I received after I sent mine -- the 'if' has a higher precedence than the comma and both statements are executed conditionally. And I agree with your earlier letter that it is better to break those into two statements and enclose them within an 'if' block -- much cleaner that way. Thanks for clearing that up! ---Larry ++ | Larry Coffin, G.P.H. Watertown, MA | | http://www.PointInfinity.com/lcoffin/[EMAIL PROTECTED] | ++ Today is the tomorrow you worried about yesterday - -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Is this correct? print syntax
On Fri, Oct 11, 2002 at 02:57:21PM -0400, Larry Coffin wrote: > >print FILEHANDLE (list, of, stuff), next if (condition); > > Why are you using a comma operator here and not just a semi-colon > to terminate the print statement? I.e. why not: > > print FILEHANDLE (list, of, stuff); > next if (condition); > > In both cases, the return value of print() is getting tossed and > the 'next if (...)' is not dependent on the print statement. Because print is generally called for its side effects rather than for its return value. -- Paul Johnson - [EMAIL PROTECTED] http://www.pjcj.net -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Is this correct? print syntax
Nikola Janceski <[EMAIL PROTECTED]> wrote:
> Is this correct placement of the parenthesis?
>
> print FILEHANDLE (list_of_print_stuff);
>
Not really. It will usually work, but the FILEHANDLE
is the first argument, so it ought to be:
print(FH "foo", "bar");
--
Steve
perldoc -qa.j | perl -lpe '($_)=m("(.*)")'
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Re: Is this correct? print syntax
On Friday, October 11, 2002, at 01:57 PM, Larry Coffin wrote: >> print FILEHANDLE (list, of, stuff), next if (condition); > > print FILEHANDLE (list, of, stuff); > next if (condition); > > In both cases, the return value of print() is getting tossed and > the 'next if (...)' is not dependent on the print statement. But these two examples don't behave the same. The first one prints and calls next, only on the condition. The second one always prints and then calls next, if the condition is true. James -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Is this correct? print syntax
On Oct 11, Nikola Janceski said: >print(FILEHANDLE list, of, stuff, to, print), next if (condition); > >which I haven't tested. and do I need another comma in that?... ;) just >fueling the fire I guess. That is what you need. print (FH @args), next if condition; And no, do NOT put a comma after the filehandle. print FH (@args), next if condition; is the same as print FH @args, next if condition; which is NOT what you want. -- Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/ RPI Acacia brother #734 http://www.perlmonks.org/ http://www.cpan.org/ ** Look for "Regular Expressions in Perl" published by Manning, in 2002 ** what does y/// stand for? why, yansliterate of course. [ I'm looking for programming work. If you like my work, let me know. ] -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Is this correct? print syntax
Hey Nikola, My MUA believes you used Internet Mail Service (5.5.2650.21) to write the following on Friday, October 11, 2002 at 2:40:28 PM. NJ> I need them.. for NJ> print FILEHANDLE (list, of, stuff), next if (condition); This type of thing is common in my code when I am messing around. my $debug=0; # !=0 makes info print print "\n\n\tThis is in the test\n\n" if $debug; -- [EMAIL PROTECTED] Flying with The Bat! eMail v1.61 Windows 2000 5.0.2195 (Service Pack 2) Does the noise in my head bother you? -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Is this correct? print syntax
On Friday, October 11, 2002, at 01:45 PM, Tim Musson wrote: > use strict; > use warnings; > print (list_of_print_stuff); # This gives an error I don't get any error with this, assuming I either make it a proper declared variable or quote it, in Perl 5.6.0. It's never wrong to use parenthesis, even if they aren't required. James -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Is this correct? print syntax
>print FILEHANDLE (list, of, stuff), next if (condition); Why are you using a comma operator here and not just a semi-colon to terminate the print statement? I.e. why not: print FILEHANDLE (list, of, stuff); next if (condition); In both cases, the return value of print() is getting tossed and the 'next if (...)' is not dependent on the print statement. ---Larry ++ | Larry Coffin, G.P.H. Watertown, MA | | http://www.PointInfinity.com/lcoffin/[EMAIL PROTECTED] | ++ Today is the tomorrow you worried about yesterday - -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Is this correct? print syntax
from the doc I was a little confused and wanted clarification: Also be careful not to follow the print keyword with a left parenthesis unless you want the corresponding right parenthesis to terminate the arguments to the print--interpose a "+" or put parentheses around all the arguments. this makes me think I can do this: print(FILEHANDLE list, of, stuff, to, print), next if (condition); which I haven't tested. and do I need another comma in that?... ;) just fueling the fire I guess. > -Original Message- > From: Tim Musson [mailto:[EMAIL PROTECTED]] > Sent: Friday, October 11, 2002 2:46 PM > To: [EMAIL PROTECTED] > Subject: Re: Is this correct? print syntax > > > Hey Nikola, > > My MUA believes you used Internet Mail Service (5.5.2650.21) > to write the following on Friday, October 11, 2002 at 2:28:27 PM. > > NJ> Is this correct placement of the parenthesis? > > NJ> print FILEHANDLE (list_of_print_stuff); > > The best thing to do is look at perldoc, and try it yourself. > > use strict; > use warnings; > print (list_of_print_stuff); # This gives an error > print "\nThis is how I usually do it\n"; > > tryperldoc -q printat a command prompt. > > -- > [EMAIL PROTECTED] > Flying with The Bat! eMail v1.61 > Windows 2000 5.0.2195 (Service Pack 2) > What else can you do at 3:00 am? > > > -- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > The views and opinions expressed in this email message are the sender's own, and do not necessarily represent the views and opinions of Summit Systems Inc. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Is this correct? print syntax
Hey Nikola, My MUA believes you used Internet Mail Service (5.5.2650.21) to write the following on Friday, October 11, 2002 at 2:28:27 PM. NJ> Is this correct placement of the parenthesis? NJ> print FILEHANDLE (list_of_print_stuff); The best thing to do is look at perldoc, and try it yourself. use strict; use warnings; print (list_of_print_stuff); # This gives an error print "\nThis is how I usually do it\n"; tryperldoc -q printat a command prompt. -- [EMAIL PROTECTED] Flying with The Bat! eMail v1.61 Windows 2000 5.0.2195 (Service Pack 2) What else can you do at 3:00 am? -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Is this correct? print syntax
In that case yes, I believe you have it right. It's the indirect
method call syntax, as far as I understand. Personally though, I would
prefer to see your example as:
if (condition) {
print FILEHANDLE list, of, stuff;
next;
}
TMTOWTDI though, of course.
James
On Friday, October 11, 2002, at 01:40 PM, Nikola Janceski wrote:
> I need them.. for
>
>
> print FILEHANDLE (list, of, stuff), next if (condition);
>
>> -Original Message-
>> From: James Edward Gray II [mailto:[EMAIL PROTECTED]]
>> Sent: Friday, October 11, 2002 2:39 PM
>> To: Nikola Janceski
>> Cc: Beginners (E-mail)
>> Subject: Re: Is this correct? print syntax
>>
>>
>> Parenthesis are optional for pre-defined subroutines, like Perl's
>> built-in, so most users just leave them off when they're not needed:
>>
>> print FILEHANDLE list, of stuff, to print;
>>
>> On Friday, October 11, 2002, at 01:28 PM, Nikola Janceski wrote:
>>
>>> Is this correct placement of the parenthesis?
>>>
>>> print FILEHANDLE (list_of_print_stuff);
>>>
>>>
>>> Nikola Janceski
>>>
>>> The straightest path is not the path of experience.
>>> -- Nicky J. from da' Bronx
>>>
>>>
>>>
>> --
>> -
>>> -
>>>
>>> The views and opinions expressed in this email message are
>> the sender's
>>> own, and do not necessarily represent the views and
>> opinions of Summit
>>> Systems Inc.
>>>
>>>
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>>>
>>
>
> ---
> -
>
> The views and opinions expressed in this email message are the sender's
> own, and do not necessarily represent the views and opinions of Summit
> Systems Inc.
>
>
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RE: Is this correct? print syntax
I need them.. for print FILEHANDLE (list, of, stuff), next if (condition); > -Original Message- > From: James Edward Gray II [mailto:[EMAIL PROTECTED]] > Sent: Friday, October 11, 2002 2:39 PM > To: Nikola Janceski > Cc: Beginners (E-mail) > Subject: Re: Is this correct? print syntax > > > Parenthesis are optional for pre-defined subroutines, like Perl's > built-in, so most users just leave them off when they're not needed: > > print FILEHANDLE list, of stuff, to print; > > On Friday, October 11, 2002, at 01:28 PM, Nikola Janceski wrote: > > > Is this correct placement of the parenthesis? > > > > print FILEHANDLE (list_of_print_stuff); > > > > > > Nikola Janceski > > > > The straightest path is not the path of experience. > > -- Nicky J. from da' Bronx > > > > > > > -- > - > > - > > > > The views and opinions expressed in this email message are > the sender's > > own, and do not necessarily represent the views and > opinions of Summit > > Systems Inc. > > > > > > -- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > The views and opinions expressed in this email message are the sender's own, and do not necessarily represent the views and opinions of Summit Systems Inc. -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Is this correct? print syntax
Parenthesis are optional for pre-defined subroutines, like Perl's built-in, so most users just leave them off when they're not needed: print FILEHANDLE list, of stuff, to print; On Friday, October 11, 2002, at 01:28 PM, Nikola Janceski wrote: > Is this correct placement of the parenthesis? > > print FILEHANDLE (list_of_print_stuff); > > > Nikola Janceski > > The straightest path is not the path of experience. > -- Nicky J. from da' Bronx > > > --- > - > > The views and opinions expressed in this email message are the sender's > own, and do not necessarily represent the views and opinions of Summit > Systems Inc. > > > -- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
