Re: Arrays and Push

Instead of push @{main::hd}, [@main::a]; you either wanted to write push @{main::hd}, $main::a; or push @{main::hd}, [@$main::a]; If you had used use strict; use warnings Perl would have told you that @main::a is an undefined value. Only the scalar (reference to an array) $main::a is defined by you (in line 2).

Greetings,
Janek

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Re^2: Arrays and Push by boftx (Deacon) on Apr 03, 2014 at 05:35 UTC
I suspect that he did in fact have `use strict;` in place and is seeing such an error message. I say this because there is little or no reason to ever use fully qualified variable names unless one does not fully understand how to use `my $variable` (or `our $variable`) when `use strict;` is in effect. On a side-note, it is a pleasant surprise to see someone who knows about the "main" namespace. :) It helps to remember that the primary goal is to drain the swamp even when you are hip-deep in alligators.	[reply] [d/l] [select]

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Re^2: Arrays and Push
by boftx (Deacon) on Apr 03, 2014 at 05:35 UTC

I suspect that he did in fact have use strict; in place and is seeing such an error message. I say this because there is little or no reason to ever use fully qualified variable names unless one does not fully understand how to use my $variable (or our $variable) when use strict; is in effect.

On a side-note, it is a pleasant surprise to see someone who knows about the "main" namespace. :)

It helps to remember that the primary goal is to drain the swamp even when you are hip-deep in alligators.

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