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Re^2: Five Ways to Reverse a String of Words (C#, Perl 5, Perl 6, Ruby, Haskell)

by eyepopslikeamosquito (Chancellor)
on Dec 21, 2006 at 02:17 UTC ( #591025=note: print w/replies, xml ) Need Help??


in reply to Re: Five Ways to Reverse a String of Words (C#, Perl 5, Perl 6, Ruby, Haskell)
in thread Five Ways to Reverse a String of Words (C#, Perl 5, Perl 6, Ruby, Haskell)

My awk is very rusty too. Unfortunately, your version emits a trailing space, which violates the spec. I've remedied that below and done it in the form of a function so that it can be more easily compared with the other languages.

# File : revwords.awk # Run with : awk -f revwords.awk </dev/null END { print reverseWords(" one two three four ") } function reverseWords(s) { if ((i = split(s, words)) == 0) return "" sret = words[i] while (--i > 0) sret = sret " " words[i] return sret }

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[Cosmic37]: rather than the value of $mydt which is a date time strong such as 2016-01-01 12:30:56
[Corion]: Cosmic37: No, but maybe $mydt doesn't contain what you think it does, or it contains characters that are special in a regular expression? Try if( $line =~ /\Q$mydt\E/) { ... for a literal match
[Cosmic37]: I mean string grrr
[Corion]: Maybe add an else branch in which you print what the values of $line and $mydt are?
[Cosmic37]: ah thank you I will try
[Cosmic37]: you are right $mydt did not contain what I expected... :-D I will now think :-D
[Cosmic37]: crunch...grind... whirr...gnashing metal crunching cogs...

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