RTFM?

grep

In scalar context, returns the number of times the expression was true.

and it's $i3 not i3

anyway others may profit from a working solution, just replacing grep with first 

use strict;
use warnings;
use List::Util qw/first/;


my @array=(1,2);

my $i1 = first { $array[$_] == 1 } (0..$#array);
my $i2 = first { $array[$_] == 2 } (0..$#array);
my $i3 = first { $array[$_] == 3 } (0..$#array);

print "<$i1> <$i2> <$i3>\n";

[download]
Use of uninitialized value $i3 in concatenation (.) or string at d:/tm
+p/first.pl line 13.
<0> <1> <>

[download]

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

In reply to Re: grep surprise by LanX
in thread grep surprise by morgon

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