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The following code is surprising me in two ways:

use strict; use warnings; use feature 'say'; use constant FL => 17,3,16; use constant FL2 => 22,4,13; my @row= "a".."z"; my @a = (" ") x 26; @a[17,3,16] = @row[22,4,13]; say "@a"; @a = (" ") x 26; @a[FL()] = @row[FL2]; say "@a";

It seems like constant folding isn't happening at all!!!

  • I get a warning for FL2
    Scalar value @row[FL2] better written as $row[FL2] (ignoring that its a constant _list_)
  • Deparsing the code shows that FL and FL2 are called as functions
    @a[FL()] = @row[FL2()];
Am I missing something?

(This is perl 5, version 16,)

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery FootballPerl is like chess, only without the dice


In reply to Constants lists in array slices by LanX

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