Re: How to make a variable in hard call.

You could use string eval, if I understand your question correctly.

use strict;
use warnings;
use Test::More;

sub square {
    my $num = shift;
    return $num*$num;
}

my $subname = 'square';

is( eval "&$subname(4)", 16 );

done_testing;
[download]

Hope this helps!

The way forward always starts with a minimal test.

Comment on Re: How to make a variable in hard call. Download Code

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Re^2: How to make a variable in hard call. by ikegami (Patriarch) on May 09, 2023 at 08:24 UTC
Same without eval: `do { no strict "refs"; $subname->( 4 ) }` [download] We can also use some trickery: `( \&$subname )->( 4 )` [download]	[reply] [d/l] [select]
Re^2: How to make a variable in hard call. by SankoR (Prior) on May 08, 2023 at 01:31 UTC
Designing their code based on this means every time they wanted to write data to a pin there would be a string eval slowing everything down.	[reply]