translate a character into a number

NaSe77 has asked for the wisdom of the Perl Monks concerning the following question:

Greatings to all you monks full of wisdom, i'm just a little novice and would like to know if there is a better way to translate a charater into the corresponding number (a/A => 1, b/B => 2, ... ) and the other way around than using a hashtable... perhaps by using the tr// function - i dont know Thanx for your wisdom NaSe

Comment on translate a character into a number

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Re: translate a character into a number by jmcnamara (Monsignor) on Apr 25, 2002 at 09:33 UTC
How about something like this: `my $char = 'A'; my $num = -64 + ord uc $char; $char = chr(64 + $num); # Translate back (to uppercase)` [download] -- John.	[reply] [d/l]
Not under EBCDIC, but not a worry by RMGir (Prior) on Apr 25, 2002 at 14:27 UTC
`my $char = 'A'; my $num = -64 + ord uc $char;` [download] Won't work for EBCDIC, but I'm guessing that's not a widespread problem :) -- Mike	[reply] [d/l]
Re: Re: translate a character into a number by NaSe77 (Monk) on Apr 25, 2002 at 09:44 UTC
thats infact a good idea ... merci	[reply]