I can think of 3 ways:
use warnings;
use strict;
use List::MoreUtils qw (any);
my $var = 3;
if (grep { $var == $_ } 2, 3) {
print "in list\n";
}
else {
print "not in list\n";
}
if (any { $var == $_ } 2, 3) {
print "in list\n";
}
else {
print "not in list\n";
}
my %vals = map {$_ => 1} 2, 3;
if (exists $vals{$var}) {
print "in list\n";
}
else {
print "not in list\n";
}
__END__
in list
in list
in list
Update: a 4th way involves the smart match operator
use 5.010;
if ($var ~~ [2, 3]) {
print "in list\n";
}
else {
print "not in list\n";
}
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