Mark wrote: > > Greetings, Hello,
> I have been trying to understand the "tr///cds" pattern matching expression There is your first misconception. tr/// (and y///) does not deal with patterns or regular expressions. tr/// TRansliterates characters and ranges of characters. > using the Camel in a Nutshell book and another one that assures me that I > can do it in 24 hours. I am looking at an expession and bouncing about all > over Perldoc.com, yet I am thwarted. I am seeing strange lights out of the If you have Perl installed then you should also have the documentation for Perl installed. The perlre.pod and perlop.pod documents explain how tr///, y///, s///, and m// work. perldoc perlop perldoc perlre > corner of my eye. Perl is cool. > > $name =~ tr/a-zA-Z0-9-_ .,:;'&$#@!*()?-//cd; > > The Nutshell says: > > c = Compliment pattern1 ? OK pattern1, you are looking very nice > today??? If the characters listed are say d-h (defgh) then /c means to transliterate all characters that are not d-h, in other words \x00-c and i-\xFF (tr/d-h//cd == tr/\x00-ci-\xFF//d) > d = Delete found but unreplaced characters. tr/a-cjx/739/d This means change all 'a' to '7', all 'b' to '3', all 'c' to '9', and delete all 'j' and 'x' characters. > s = Squash duplicate replaced characters. If you have a string of repeated characters this will "squash" them to one character. For example, given the string "abbcdeeefggghiiijk", tr/ei//s will produce the string "abbcdefggghijk". > I'm not sure what any of these actually mean except posssibly "d" and I'm > not so sure of that. HTH John -- use Perl; program fulfillment -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
