Re: sharing array of arrays between threads

Firstly, take a look at the following:

perlthrtut - Perl threads tutorial
threads - Perl interpreter-based threads
threads::shared - Perl extension for sharing data structures between threads

In addition, here's a couple of points based on the code you've supplied:

You should generally be using subroutine() instead of &subroutine(), i.e. no leading ampersand (&). See perlsub.
Update: See ++BrowserUk's comment below. threads::shared has:
```
$var = &share([]);   # Same as $var = shared_clone([]);
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```
$a (and $b, which you haven't used) are special variables used by sort and a number of other list-related functions (see List::Util and List::MoreUtils for some examples). $a and $b are described in perlvar.

-- Ken

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Re^2: sharing array of arrays between threads by BrowserUk (Patriarch) on Aug 10, 2012 at 09:42 UTC
You should generally be using subroutine() instead of &subroutine(), i.e. no leading ampersand (&). See perlsub. Actually, if you read threads::shared, you'll find that his use of `&share([]);` is exactly the correct thing to do in this case. With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. The start of some sanity?	[reply] [d/l]
Re^3: sharing array of arrays between threads by kcott (Archbishop) on Aug 10, 2012 at 10:23 UTC
++ Thanks for pointing that out. I've updated my node. -- Ken	[reply]
Re^4: sharing array of arrays between threads by bebe (Novice) on Aug 10, 2012 at 23:51 UTC
Hi everyone thank you so much for your help.... Thanks for the tutorials... I'm trying to correct my code ... I've successfully tried sharing array X (when X is a one_dim array)... but I'm still having the hardest time converting this code so that array X is looks like below X[0] = ("QWE", "RTYU" ,"IOP") X[1] = ("QSWE", "TYU" ,"IKOP", "BVC") X[2] = ("QE", "TYU") X[3] = ("QSWE", "TYU" ,"IKOP", "BVC", "LMNB") . . . here is the code that works for one_dim array X my @X : shared = (); sub abc { my $Var2; .... Here the string in $Var2 gets updated everytime abc is called .... push(@X, $Var2); } here is how I'm changing this my @X : shared = (); sub abc { my $Var2; .... Here the string in $Var2 gets updated everytime abc is called push(@{X[$i]}, $Var2); } I'm still confused, I'm not quite sure how to share the arrays inside of X correctly. Could you please help me with that?I greatly appreciate all your help. thank you so much	[reply] [d/l] [select]