Is it possible to read a set of values that include the range operator into an array for further processing or is this disallowed - if so can anyone suggest a workaround as the array set and number of ranges is dynamic and cannot be set directly

Directly writing the ranges into an array works

!/usr/bin/perl
use strict;
use warnings;
my @list = ([0..1], [2..4], [5..8]);
my @sets = [];
for my $eacharray (@list)
  {
  @sets = map { my @prev = @$_; map [ @prev, $_ ], @$eacharray } @sets
+;
  }
use Data::Dump 'dd'; dd @sets;

[download]

Writing the ranges into an array from a file doesn't

!/usr/bin/perl
use strict;
use warnings;
open my $handle, 'input.txt';
open my $handle, '<', 'input.txt';
chomp(my @list = <$handle>);
close $handle;
my @sets = [];
for my $eacharray (@list)
  {
  @sets = map { my @prev = @$_; map [ @prev, $_ ], @$eacharray } @sets
+;
  }
use Data::Dump 'dd'; dd @sets;

The input.txt file is:

[0..1]
[2..4]
[5..8]

[download]

In reply to Assign multiple items into an array containing the range operator from a file by george59

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