this thread is bloated b/c you didn't make clear what your real problem is and where your priorities are.
if its only about translating a number, than using a hash is by far the best solution
use strict;
use warnings;
my %trans = (1 => "One", 2 => "Two", 3 => "Three");
my $var = '2.123.45.6';
if ( $var =~ /^(\d)\./ ) {
print "$var starts with $trans{$1}";
} else {
print "$var malformed";
}
Now since this became a general discussion of "switch", for completeness TIMTOWTDI:
use strict;
use warnings;
my $i;
for my $case (1..4) {
eval { goto "_$case" } or
$i = "Other"; next;
_1: $i = "One" ; next;
_2: $i = "Two" ; next;
_3: $i = "Three"; next;
} continue {
print "$case is $i\n";
}
Hashes with dispatch tables (slow sub calls) and if-elsif-chains (slow linear testing) shouldn't be as fast as this approach.
Cheers Rolf
( addicted to the Perl Programming Language)
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