Read the friendly manual more thoroughly:
perlsyn: "The experimental "given" statement is *not automatically enabled*; see
"Switch Statements" below for how to do so, and the attendant caveats."
Rough digest of the referenced matter: From 5.10.1 on one can say use feature "switch"; and from 5.14 onward, you can enable switch (given/when) by specifying the Perl version.
When done per the doc, execution (under 5.16/32bit Win7) is as follows:
C:\>perl 1078449.pl
2 is Two
C:\>
using your code with addition of line 3, specifying a version = or > 5.14:
use strict;
use warnings;
use 5.016;
sub test2 {
my $var = 2;
my $i;
given ($var){
when(1) { $i = "One"; }
when(2) { $i = "Two"; }
when(3) { $i = "Three"; }
default { $i = "Other"; }
}
print "$var is $i";
}
test2();
Questions containing the words "doesn't work" (or their moral equivalent) will usually get a downvote from me unless accompanied by:
- code
- verbatim error and/or warning messages
- a coherent explanation of what "doesn't work actually means.