Re: Alpha base-26 to base-10...

[Util]

in reply to Alpha base-26 to base-10...

Yet another take. Clear and elegant, but quite inefficient given large maximums.

{
  my $count;
  my %h = map {$_ => ++$count} 'a'..'zzz';
  sub alphabetic_to_base10 {
    return $h{ lc( $_[0] ) } or die;
  }
}

[Aristotle]

That's simply a pre-memoized version of BrowserUk's approach.

Makeshifts last the longest.