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Re: Re: Are prototypes evil?

by demerphq (Chancellor)
on Sep 03, 2002 at 18:13 UTC ( #194837=note: print w/replies, xml ) Need Help??

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  1. or download this
    sub foo{ print join "-",@_};
    my @array=qw(a b c d e);
    foo(scalar @array,"Bar");
    
  2. or download this
    sub my_scalar {
      my $count=0;
      $count++ foreach @_;
      return $count;
    }
    
  3. or download this
    sub listy(\@){
        print join("*",@{$_[0]}),"\n";
    }
    listy @array;
    
  4. or download this
    sub assert ($;$) {
        unless($_[0]) {
    ...
        }
        return undef;
    }
    
  5. or download this
    assert @array,"Array must have elements within";
    
  6. or download this
    assert scalar @array,"...";
    

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[Corion]: choroba: :-D
[Corion]: And yes, at least the basic implementation is to strip off some prepositions ("the", "a", "an") from the term with regular expressions and then do a regex match ;-)
[Corion]: So that could become a fun series of articles that implement this with regular expressions, Parse::Eyapp, Marpa, YACC, Perl6 and Regexp::Grammar and whatnot. If I have a test suite, I could even do benchmarks.
[Corion]: I guess part of the fun will be to add all those optional prepositions etc. to the grammar, whereas that is easy with regular expressions :)

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