For example suppose a list is composed of ( <a>, <b>, <c> ) where each of the a, b, c are one or more sub calls that may mutate some value, which may be used by others further down the list, will the list values be evaluated in order of a, b, c, or is it undefined?

IIUC, why don't you find out yourself?

#!/usr/bin/perl -l

use strict;
use warnings;

BEGIN {
    my $foo;
    sub foo () { $foo }
    for my $n (qw/a b c d e f/) {
        no strict 'refs';
        *$n = sub () { warn $n; $foo++ };
    }
}

my $arr=(a,b,c,d,e,f);
print foo, $arr;
    
__END__

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In reply to Re^5: finding number of contiguous letters by blazar
in thread finding number of contiguous letters by Marknel

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