Re: Filehandle within foreach loop

Yes, and I think that gives us *two* reasons to always explicitly close filehandles. :-) David On Sun, Jul 16, 2017 at 8:00 AM, Shawn H Corey wrote: > On Sun, 16 Jul 2017 07:36:39 -0400 > David Mertens wrote: > > > Also note that lexical

Re: Filehandle within foreach loop

On Sun, 16 Jul 2017 07:36:39 -0400 David Mertens wrote: > Also note that lexical filehandles close when they go out of scope True but you should always explicitly close your files. This gives you a chance to report any errors it had, have rather than silently ignoring

Re: Filehandle within foreach loop

last such expression won't close until the end of the program. David On Wed, Jul 12, 2017 at 5:28 PM, Jim Gibson <jimsgib...@gmail.com> wrote: > If you wish to terminate execution of a foreach loop without iterating > over all of the elements (@files, in this case) use the “last” statement: &

Re: Filehandle within foreach loop

On Thu, 13 Jul 2017 00:50:42 +0530 perl kamal wrote: > open (my $FH, $file) or die "could not open file\n"; A quick note: output the file name and error message to have a better idea of what went wrong. open (my $FH, $file) or die "could not open file $file: $!\n";

Re: Filehandle within foreach loop

If you wish to terminate execution of a foreach loop without iterating over all of the elements (@files, in this case) use the “last” statement: foreach my $file ( @files ) { # process file open( my $fh, ‘<‘, $file ) or die(…); while( my $line = <$fh> ) { # process line } c

Re: Filehandle within foreach loop

That code will read each line from each file. The problem is likely in the part that says: #[process the lines & hash construction.] What are you doing there? On Wed, Jul 12, 2017 at 3:23 PM perl kamal wrote: > Hello All, > > I would like to read multiple files and

Filehandle within foreach loop

Hello All, I would like to read multiple files and process them.But we could read the first file alone and the rest are skipped from the while loop. Please correct me where am i missing the logic.Thanks. use strict; use warnings; my @files=qw(Alpha.txt Beta.txt Gama.txt); foreach my $file

Re: Foreach loop and hash of arrays

On 07/02/2012 01:39, sono...@fannullone.us wrote: On Feb 6, 2012, at 1:42 PM, Steve Bertrand wrote: This may be easier. It uses the hash elements directly as an array, then uses grep to see if the zip code is within the specific state. It returns true if the state owns that zip code, and false

Re: Foreach loop and hash of arrays

On 12-02-07 06:26 AM, Rob Dixon wrote: in fact, if the objective is to reduce the code to something as brief as possible then this will do the trick my $match = (grep $_ eq $customers_zip, @{$states{$customers_state}}) ? 'yes' : 'no'; You can use first from List::Util for more efficient

Foreach loop and hash of arrays

I have a web form where people enter their address info and I want to make sure that the first three digits of their Zip Code correspond to their State. So I'm creating a hash of arrays that contains a list of Zip Codes for the United States. I've also written a foreach loop

Re: Foreach loop and hash of arrays

for the United States. I've also written a foreach loop to access this hash but I'd like to see if it could be written better. For example, do I really need three foreach loops? Also, the first line that's printed contains 499 and I can't figure out where that's coming from. I'd

Re: Foreach loop and hash of arrays

On Mon, Feb 6, 2012 at 1:14 PM, sono...@fannullone.us wrote: For example, do I really need three foreach loops? You can get rid of third ForLoop for sure. use strict; use warnings; my %states = ( AL = [ '350','351', ], AK = [ '995','996', ], AZ = [ '850','851', ],

Re: Foreach loop and hash of arrays

On 06/02/2012 21:14, sono...@fannullone.us wrote: use strict; use warnings; my %states = ( AL = [ '350','351', ], AK = [ '995','996', ], AZ = [ '850','851', ], AR = [ '716','717', ], ); my $customers_state = 'AZ'; my $customers_zip = '850'; my $match = 'no'

Re: Foreach loop and hash of arrays

On 02/06/2012 04:58 PM, Parag Kalra wrote: On Mon, Feb 6, 2012 at 1:14 PM,sono...@fannullone.us wrote: For example, do I really need three foreach loops? You can get rid of third ForLoop for sure. you don't actually lose the third loop. grep is an implied loop. STATE: foreach

Re: Foreach loop and hash of arrays

On Mon, Feb 6, 2012 at 3:14 PM, sono...@fannullone.us wrote: So I'm creating a hash of arrays that contains a list of Zip Codes for the United States. I've also written a foreach loop to access this hash but I'd like to see if it could be written better. For example, do I really need

Re: Foreach loop and hash of arrays

On Feb 6, 2012, at 1:42 PM, Steve Bertrand wrote: This may be easier. It uses the hash elements directly as an array, then uses grep to see if the zip code is within the specific state. It returns true if the state owns that zip code, and false if it doesn't. if ( grep(

Re: Question/Problem with foreach loop

Gents, Sorry for my delayed response. Thank you for your suggestions. Based on your feedback, I made the following changes, and the hook is now working as expected. Thanks a million! my $taskstate = $taskEntity-GetFieldValue(state)-GetValue();     $session-OutputDebugString (Task's state is

Using $variable outside a foreach loop

Maybe it's too early in the morning here, but I can't seem to remember how to use a lexical $variable that is defined inside a foreach loop, outside of that loop.=:\ Here's the loop: foreach my $name (split (/, */, $names)) { next

Re: Using $variable outside a foreach loop

Hello, foreach my $name (split (/, */, $names)) { Here, the scope of $name is limited to the foreach loop and not outside it. So, you will have to declare the variable again for use outside the loop. Regards, Alan Haggai Alavi. -- The difference makes the difference

Re: Using $variable outside a foreach loop

On Jun 3, 2011, at 8:45 AM, Alan Haggai Alavi wrote: Here, the scope of $name is limited to the foreach loop and not outside it. So, you will have to declare the variable again for use outside the loop. But wouldn't that make the second $name a different variable? I'm not at my

Re: Using $variable outside a foreach loop

At 8:37 AM -0700 6/3/11, sono...@fannullone.us wrote: Maybe it's too early in the morning here, but I can't seem to remember how to use a lexical $variable that is defined inside a foreach loop, outside of that loop.=:\ Here's the loop: foreach my $name (split

Re: Using $variable outside a foreach loop

On Jun 3, 8:37 am, sono...@fannullone.us wrote: ...         I want to use $name in another loop just after this one, but when I do, I get Global symbol $name requires explicit package. One option is an outer enclosing block that'll extend the scope of $name to that entire block: {

Re: Using $variable outside a foreach loop

C.DeRykus wrote: One option is an outer enclosing block that'll extend the scope of $name to that entire block: Jim Gibson wrote: Declare the variable just before the loop, and remove the 'my' from the foreach statement: Thanks for the responses. I was able to get it to work.

Re: Using $variable outside a foreach loop

On 11-06-03 11:37 AM, sono...@fannullone.us wrote: I want to use $name in another loop just after this one, but when I do, I get Global symbol $name requires explicit package. Could someone please point me in the right direction? Certainly. The variable used in a foreach loop

Re: Using $variable outside a foreach loop

s == sono-io sono...@fannullone.us writes: sMaybe it's too early in the morning here, but I can't seem to remember how to use a lexical $variable that is defined inside a foreach loop, outside of that loop.=:\ sHere's the loop: sforeach my $name (split

Re: Using $variable outside a foreach loop

On Fri, Jun 3, 2011 at 1:23 PM, Jim Gibson jimsgib...@gmail.com wrote: Declare the variable just before the loop, and remove the 'my' from the foreach statement: my $name; foreach $name ( ... ) { ... } That won't do. What that code actually translated to is my $name; for my $name ( ...

Re: Using $variable outside a foreach loop

in a for(each) is probably introducing BF subtle bugs into your program. why search PBP when the perldocs are very clear about it and easily searched? from perldoc perlsyn: The foreach loop iterates over a normal list value and sets the variable VAR to be each element of the list

Re: Using $variable outside a foreach loop

in a foreach loop is independent of anything outside the loop. I actually had to use another variable in the second loop to grab the name. Thanks to everyone who responded. I got it to work now. Marc -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e

Re: Using $variable outside a foreach loop

On 11-06-03 03:58 PM, sono...@fannullone.us wrote: I wasn't very clear in what I wanted. Sorry. I wanted to use the value of $name in another loop but after testing That implies something is wrong with your logic. The question is: what value of $name do you want? The first? The last?

Re: Using $variable outside a foreach loop

On Jun 3, 2011, at 1:38 PM, Shawn H Corey wrote: That implies something is wrong with your logic. Yep. I came to the same conclusion. =:) -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/

Re: Using $variable outside a foreach loop

On 2011-06-03 17:37, sono...@fannullone.us wrote: Maybe it's too early in the morning here, but I can't seem to remember how to use a lexical $variable that is defined inside a foreach loop, outside of that loop.=:\ Here's the loop: foreach my $name

Re: Using $variable outside a foreach loop

R == Ruud rvtol+use...@isolution.nl writes: R On 2011-06-03 17:37, sono...@fannullone.us wrote: Maybe it's too early in the morning here, but I can't seem to remember how to use a lexical $variable that is defined inside a foreach loop, outside of that loop.=:\ Here's the loop

Re: Using $variable outside a foreach loop

On Jun 3, 2011 3:17 PM, Uri Guttman u...@stemsystems.com wrote: perl -le 'my $x = zzz ; for $x ( qw( foo bar ) ) { print L: $x } print E: $x' L: foo L: bar E: zzz That's odd, I would have thought that would have given 'foo bar bar'. So, how would you keep data from a loop once you're

Re: Using $variable outside a foreach loop

sw == shawn wilson ag4ve...@gmail.com writes: sw On Jun 3, 2011 3:17 PM, Uri Guttman u...@stemsystems.com wrote: perl -le 'my $x = zzz ; for $x ( qw( foo bar ) ) { print L: $x } print sw E: $x' L: foo L: bar E: zzz sw That's odd, I would have thought that would have

Question/Problem with foreach loop

Hi, In this code, the intent is to iterate through the tasks and modify the ID field. The Task record (entity) should not be modified if it's state equals Completed. When I run this routine, there are two problems: Problem 1) The if statement is not being evaluated. The record (even if it's

Re: Question/Problem with foreach loop

On 5/18/11 Wed May 18, 2011 5:06 PM, CM Analyst cmanal...@yahoo.com scribbled: Hi, In this code, the intent is to iterate through the tasks and modify the ID field. The Task record (entity) should not be modified if it's state equals Completed. When I run this routine, there are two

Re: Question/Problem with foreach loop

CA == CM Analyst cmanal...@yahoo.com writes: CA my $taskEntity = $session-GetEntity ('almtask', $_); that gets a perl object in $taskEntity. CA $taskEntity-GetFieldValue(state)-GetValue(); where is the value being assigned to? $taskEntity is not being modified or set in that line of code.

Re: foreach loop

Thanks Rob. That seems to have done the trick. I understand this is a for loop, but do you mind breaking it down line by line so I fully understand what it is doing? Thank you, Chris  for my $i (44..47) {    my $rlp = $data[$i];    $sum{$cell}{$sect}{$carr}{$dist} += $rlp if $rlp;  } --

Re: foreach loop

On 3/25/11 Fri Mar 25, 2011 9:11 AM, Chris Stinemetz chrisstinem...@gmail.com scribbled: Thanks Rob. That seems to have done the trick. I understand this is a for loop, but do you mind breaking it down line by line so I fully understand what it is doing? My name isn't Rob, but I can give

RE: foreach loop

Thanks again Jim! I have one more question..lol I appreciate all your help! I would like $dist be part of the print statement, but I am not sure how to code it correctly. I am getting the following error: Global symbol @dist requires explicit package name at ./jim.pl line 38. Execution of

Re: foreach loop

On 3/24/11 Thu Mar 24, 2011 9:04 AM, Chris Stinemetz cstinem...@cricketcommunications.com scribbled: I would like $dist be part of the print statement, but I am not sure how to code it correctly. The value of $dist will vary for each row. If you want to print out the correct value of $dist

Re: foreach loop

Jim Gibson wrote: On 3/24/11 Thu Mar 24, 2011 9:04 AM, Chris Stinemetz cstinem...@cricketcommunications.com scribbled: $sum{$cell}{$sect}{$carr} += $rlp1 += $rlp2 += $rlp3 += $rlp4 || 0 ; } I see you are changing your program requirements. You are now accumulating multiple rlp values

Re: foreach loop

Jim, I am getting really close to finishing up this program. perl is lot's of fun and I appreciate all your help! The output is giving me the data I am looking for except for the following issues: How would I add the correct code to make sure the array has a numeric value before the loop

Re: foreach loop

On 25/03/2011 02:36, Chris Stinemetz wrote: Jim, I am getting really close to finishing up this program. perl is lot's of fun and I appreciate all your help! The output is giving me the data I am looking for except for the following issues: How would I add the correct code to make sure

RE: foreach loop

Thanks Jim, I am still unable to sum up the field $rlptxat. The error I am getting is below: Scalar found where operator expected at ./jim.pl line 52, near $sum (Missing semicolon on previous line?) my variable %sum masks earlier declaration in same scope at ./jim.pl line 54. my

Re: foreach loop

On 3/23/11 Wed Mar 23, 2011 10:02 AM, Chris Stinemetz cstinem...@cricketcommunications.com scribbled: Thanks Jim, I am still unable to sum up the field $rlptxat. The error I am getting is below: Scalar found where operator expected at ./jim.pl line 52, near $sum (Missing

Re: foreach loop

On Mon, Mar 21, 2011 at 01:46, Mike McClain m.d.mccl...@cox.net wrote: snip my @report = map $_-{cell}\t$_-{sect}\t$_-{carr}\t$_-{chan}\t$_-{dist}\n , @sorted; print @report ; This map will consume a lot of memory, better do it using a foreach loop. In what way will the use of map here

Re: foreach loop

On 3/23/11 Wed Mar 23, 2011 10:02 AM, Chris Stinemetz cstinem...@cricketcommunications.com scribbled: In addition to the missing semicolon, the declaration of %sum must appear before it is used, i.e. before the while(DATA) loop. The line adding values of $rlptxat1 to the sum must appear inside

RE: foreach loop

That worked! Thanks Jim. Chris -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/

RE: foreach loop

Jim, I have another question. How do I sort the results so it is from smallest to largest starting with $cell,$sect,$carr? Thanks again for all you help. I am gaining a much better understanding. This is what I got: #!/usr/bin/perl use warnings; use strict; #my $filepath = 'C:/temp/PCMD';

Re: foreach loop

On 3/23/11 Wed Mar 23, 2011 12:49 PM, Chris Stinemetz cstinem...@cricketcommunications.com scribbled: Jim, I have another question. How do I sort the results so it is from smallest to largest starting with $cell,$sect,$carr? It is difficult to sort a multi-level, nested hash. I would

RE: foreach loop

No, it doesn't. What is a rlptxat element? Where do they come from. rlptxat is just an element indexed at 44 that has a value, in which I would like to sum up, when it has the same elements cell sect and carr in the record. I hope this helps Thank you, Chris At 8:03 PM -0600 3/20/11, Chris

Re: foreach loop

On 3/22/11 Tue Mar 22, 2011 2:24 PM, Chris Stinemetz cstinem...@cricketcommunications.com scribbled: No, it doesn't. What is a rlptxat element? Where do they come from. rlptxat is just an element indexed at 44 that has a value, in which I would like to sum up, when it has the same elements

RE: foreach loop

Jim, You hit it right on. This is exactly what I am trying to do. OK. With this information and that from previous posts, your requirements may be summaryized as follows: You have a file with one record per line, each line consisting of a number of fields. Within each record may be found

RE: foreach loop

At 9:58 PM -0600 3/22/11, Chris Stinemetz wrote: Jim, You hit it right on. This is exactly what I am trying to do. OK. With this information and that from previous posts, your requirements may be summaryized as follows: You have a file with one record per line, each line consisting of a

Re: foreach loop

On Sun, Mar 20, 2011 at 10:06:25AM +0200, Shlomi Fish wrote: On Sunday 20 Mar 2011 05:43:38 Chris Stinemetz wrote: I am trying to code a foreach loop, that will add all occurrences of the element rlptxat that have the same elements cell, sect and chan. snip $record{dist}/6.6/8/2*10/10

Re: foreach loop

Hi Chris, On Sunday 20 Mar 2011 05:43:38 Chris Stinemetz wrote: I am trying to code a foreach loop, that will add all occurrences of the element rlptxat that have the same elements cell, sect and chan. My failed attempt can be located in between the ### lines. If I understand your code

Re: foreach loop

. slurping is faster and generally cleaner than line by line. considering he was doing a poor version of slurping before, this is much better. print @report ; SF This map will consume a lot of memory, better do it using a foreach loop. again, not. his file isn't that large. given he wants to print

RE: foreach loop

So back to the question. How can I nest this foreach loop correctly to add all occurrences of the element rlptxat that have the same elements cell, sect and chan in the array? $record{rlptxat} = ( length($record{rlptxat}) 1 ) ? $record{rlptxat}{cell, sect, chan, dist}++ : '' ; Thank you very

RE: foreach loop

At 8:31 AM -0600 3/20/11, Chris Stinemetz wrote: So back to the question. How can I nest this foreach loop correctly to add all occurrences of the element rlptxat that have the same elements cell, sect and chan in the array? $record{rlptxat} = ( length($record{rlptxat}) 1 ) ? $record{rlptxat

RE: foreach loop

:58 PM To: beginners@perl.org Subject: RE: foreach loop At 8:31 AM -0600 3/20/11, Chris Stinemetz wrote: So back to the question. How can I nest this foreach loop correctly to add all occurrences of the element rlptxat that have the same elements cell, sect and chan in the array? $record{rlptxat

RE: foreach loop

At 8:03 PM -0600 3/20/11, Chris Stinemetz wrote: Jim, Thanks for your feedback. I am actually trying to sum up all rlptxat elements that have the same cell, sect, and chan elements in the array. I hope this clarifies. No, it doesn't. What is a rlptxat element? Where do they come from. You

Re: foreach loop

于 2011-3-21 13:33, Jim Gibson 写道: Iterate over the result: for my $cell ( sort keys %sum ) { for my $sect ( sort keys %{$sum{$cell}} ) { for my $chan ( sort keys %{$sum{$cell}{$sect}} ) { print Value of sum($cell,$sect,$chan) is $sum{$cell}{$sect}{$chan}\n; }

foreach loop

I am trying to code a foreach loop, that will add all occurrences of the element rlptxat that have the same elements cell, sect and chan. My failed attempt can be located in between the ### lines. Below is what I have so far. Thank you in advance, Chris #!/usr/bin/perl use warnings; use

Problem with foreach loop

Hello list, Could someone please explain why this test script: my @arr1 = qw(one two three); my @arr2 = qw(1 2 3); foreach my $arr1 ( @arr1 ) { print Arr1: $arr1\n; foreach my $arr2 ( @arr2 ) { print Arr2: $arr2\n; if ( $arr2 eq '2' ) {

WG: Problem with foreach loop

. September 2010 09:20 An: beginners@perl.org Betreff: Problem with foreach loop Hello list, Could someone please explain why this test script: my @arr1 = qw(one two three); my @arr2 = qw(1 2 3); foreach my $arr1 ( @arr1 ) { print Arr1: $arr1\n; foreach my $arr2 ( @arr2

Re: Problem with foreach loop

Hi Nora, On Monday 27 September 2010 09:19:46 HACKER Nora wrote: Hello list, Could someone please explain why this test script: my @arr1 = qw(one two three); my @arr2 = qw(1 2 3); foreach my $arr1 ( @arr1 ) { print Arr1: $arr1\n; foreach my $arr2 ( @arr2 ) {

AW: Problem with foreach loop

2010 09:34 An: HACKER Nora Betreff: Re: Problem with foreach loop When $arr2 eq '2', you shift 'one' off @arr1, but you're still working with$ arr[0], which is now 'two'. When the second foreach ends, it moves onto $arr1[1], which is 'three'. Also, if you want it to stop at '2', put a last

Re: Problem with foreach loop

On Mon, Sep 27, 2010 at 9:19 AM, HACKER Nora nora.hac...@stgkk.at wrote: Hello list, Could someone please explain why this test script: my @arr1 = qw(one two three); my @arr2 = qw(1 2 3); foreach my $arr1 ( @arr1 ) { print Arr1: $arr1\n; foreach my $arr2 ( @arr2 ) {

Re: AW: Problem with foreach loop

On Monday 27 September 2010 09:40:43 HACKER Nora wrote: Hi Michael, Thanks for your fast reply. I didn't realize that the shift is of immediate effect not only to the array but also to the current element of iteration in the loop itself. It may be. However, that is besides the point

AW: Problem with foreach loop

something with $arr1_elem } [/code] Is the principle you are trying to explain that the foreach loop should be changed to a while or that it is advisable to make a copy of the original array? (Or just both? :-) ) I suppose it's all about the 'while' because even if I made a copy of the array

Re: Problem with foreach loop

HACKER Nora wrote: Hello list, Hello, Could someone please explain why this test script: my @arr1 = qw(one two three); my @arr2 = qw(1 2 3); foreach my $arr1 ( @arr1 ) { print Arr1: $arr1\n; foreach my $arr2 ( @arr2 ) { print Arr2: $arr2\n;

Re: AW: Problem with foreach loop

; while (defined (my $arr1_elem = shift(@arr1_copy))) { # Do something with $arr1_elem } [/code] Is the principle you are trying to explain that the foreach loop should be changed to a while or that it is advisable to make a copy of the original array? (Or just both? :-) ) Well

next in foreach loop

Hi, Complete newbie. Is there any way to use next from within a foreach loop? All the examples I have seen/read use a while loop to demo. Thanks, Stuart -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/

Re: next in foreach loop

2010/8/13 Kryten kryte...@googlemail.com: Hi, Complete newbie. Is there any way to use next from within a foreach loop? Sure. $ perl -le ' for (1..10) { next if $_ == 5; print; } ' 1 2 3 4 6 7 8 9 10 -- Jeff Pang http://home.arcor.de/pangj/ -- To unsubscribe, e-mail

Re: next in foreach loop

On Aug 12, 2010, at 19:08, Kryten kryte...@googlemail.com wrote: Hi, Complete newbie. Is there any way to use next from within a foreach loop? All the examples I have seen/read use a while loop to demo. Yes, next will work on for/foreach, while, and until loops. So you can say for my

AW: Syntax of Foreach loop

for the lexical scope. While Perl by itself will happily let variables spring into existence whenever you first refer to them, the accepted best practice is to run perl with the -w switch or the use warnings; pragma which requires variables to be declared before their first use. The foreach loop iterates

Re: AW: Syntax of Foreach loop

TB == Thomas Bätzler t.baetz...@bringe.com writes: TB Jon Forsyth jon4s...@gmail.com asked: I am truly a beginner. Could someone help me understand this syntax out of a code example from Learning Perl? On line 5 I'm confused as to why my $number is between foreach and the ()? is my

AW: AW: Syntax of Foreach loop

Uri Guttman u...@stemsystems.com wrote: TB == Thomas Bätzler t.baetz...@bringe.com writes: TB with the -w switch or the use warnings; pragma which requires TB variables to be declared before their first use. that is the use strict pragma, not the warnings one. Of course. I knew I

Re: Syntax of Foreach loop

On Tue, 30 Mar 2010 23:05:00 -0600 Jon Forsyth jon4s...@gmail.com wrote: I am truly a beginner. Could someone help me understand this syntax out of a code example from Learning Perl? On line 5 I'm confused as to why my $number is between foreach and the ()? is my $number part of the loop?

Syntax of Foreach loop

I am truly a beginner. Could someone help me understand this syntax out of a code example from Learning Perl? On line 5 I'm confused as to why my $number is between foreach and the ()? is my $number part of the loop? sub running_sum { state $sum = 0; state @numbers; foreach my $number

map foreach loop into array

I have been trying to make this thing work .. this is not a actual code @s = { some elemnts}; foreach my $s(@s){ # i made that $s into array something like @data1 foreach my$data(@data1) if( $data =~ some text){ #here i will get my data for sure

Re: map foreach loop into array

On Sunday 21 Mar 2010 17:44:49 perl wrote: I have been trying to make this thing work .. this is not a actual code @s = { some elemnts}; foreach my $s(@s){ # i made that $s into array something like @data1 foreach my$data(@data1) if( $data =~ some text){

Re: foreach loop

On Fri, Nov 6, 2009 at 6:48 PM, John W. Krahn jwkr...@shaw.ca wrote: tom smith wrote: On Mon, Nov 2, 2009 at 5:10 AM, John W. Krahn jwkr...@shaw.ca wrote: Philip Potter wrote: 2009/11/2 Thomas Bätzler t.baetz...@bringe.com: while( my $line = $file ){ snip } Won't this loop

Re: foreach loop

2009/11/2 Anant Gupta anantgupta...@gmail.com: Hello, In the foreach loop, without going to the beginning of the loop, i want to get the next iteration of data. How do i get it. eg You can always use a for loop and refer to the next item: for (my $i= 0; $i @lines; $i++) { if ($lines[$i + 1

AW: foreach loop

Anant Gupta mailto:anantgupta...@gmail.com asked: In the foreach loop, without going to the beginning of the loop, i want to get the next iteration of data. How do i get it. You should probably not slurp (read in all at once) the file unless you need to. In your particular case reading

Re: foreach loop

Anant Gupta wrote: Hello, Hello, In the foreach loop, without going to the beginning of the loop, i want to get the next iteration of data. How do i get it. eg use strict; open(FILE,abc.txt) or die CAnnot open; my @lines=FILE; foreach my $line(@lines) { if($lin =~ m/something

Re: foreach loop

Ohh, Thanks for the help On Mon, Nov 2, 2009 at 1:40 PM, John W. Krahn jwkr...@shaw.ca wrote: Anant Gupta wrote: Hello, Hello, In the foreach loop, without going to the beginning of the loop, i want to get the next iteration of data. How do i get it. eg use strict; open(FILE

Re: foreach loop

2009/11/2 Thomas Bätzler t.baetz...@bringe.com: while( my $line = $file ){ snip } Won't this loop terminate early if there is a blank line or a line containing only '0'? If I do a readline loop I always do: while (defined ($line = $file)) Is there something magical happening here I don't know

AW: foreach loop

Philip Potter philip.g.pot...@gmail.com asked: Won't this loop terminate early if there is a blank line or a line containing only '0'? If I do a readline loop I always do: while (defined ($line = $file)) Is there something magical happening here I don't know about? I know about the magical:

Re: foreach loop

Philip Potter wrote: 2009/11/2 Thomas Bätzler t.baetz...@bringe.com: while( my $line = $file ){ snip } Won't this loop terminate early if there is a blank line or a line containing only '0'? If I do a readline loop I always do: while (defined ($line = $file)) Is there something magical

Re: foreach loop

On Mon, 02 Nov 2009 13:06:27 +0530, Anant Gupta wrote: Hello, In the foreach loop, without going to the beginning of the loop, i want to get the next iteration of data. How do i get it. eg use strict; open(FILE,abc.txt) or die CAnnot open; my @lines=FILE; foreach my $line(@lines

foreach loop

Hello, In the foreach loop, without going to the beginning of the loop, i want to get the next iteration of data. How do i get it. eg use strict; open(FILE,abc.txt) or die CAnnot open; my @lines=FILE; foreach my $line(@lines) { if($lin =~ m/something/) { #some code

Difference between for foreach loop

Hi all, What is the difference between the 'for' 'foreach' loops? I know that they can be used interchangeably then what is the purpose of keeping them separate? Can anyone suggest me a good url which can tell the difference between two? Thanks Regards, Sanket Vaidya

Re: Difference between for foreach loop

2009/5/25 sanket vaidya sanket.vai...@patni.com: What is the difference between the 'for' 'foreach' loops? There is none. http://perldoc.perl.org/perlsyn.html#Foreach-Loops : The foreach keyword is actually a synonym for the for keyword, so you can use foreach for readability or for for

Re: Difference between for foreach loop

sanket vaidya wrote: What is the difference between the 'for' 'foreach' loops? I know that they can be used interchangeably then what is the purpose of keeping them separate? The _words_ 'for' and 'foreach' can be used interchangeably in foreach loops, but a true for loop is something else.

Re: Difference between for foreach loop

there is no foreach loop. And the c-style loop is named loop. -- Chas. Owens wonkden.net The most important skill a programmer can have is the ability to read. -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/

Re: Difference between for foreach loop

sanket between two? Back in the early days of Perl, Larry Wall decided to borrow from both C (the for loop) and Csh (the foreach loop) to provide a means of a computed iterator or a simple list enumeration. Apparently, he noticed that Perl could always distinguish (by the contents

RE: Difference between for foreach loop

-Original Message- From: Randal L. Schwartz [mailto:mer...@stonehenge.com] Sent: Monday, May 25, 2009 10:10 PM To: beginners@perl.org Subject: Re: Difference between for foreach loop sanket == sanket vaidya sanket.vai...@patni.com writes: sanket What is the difference between

Re: Difference between for foreach loop

On Mon, May 25, 2009 at 23:50, sanket vaidya sanket.vai...@patni.com wrote: snip So to conclude 'for' 'foreach' are the two different ways to write same thing there is no particular advantage of using one over other. Group, correct me if I am wrong. snip I wouldn't say there is no

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