Re^3: using shift and $

sub alter {   
   my @newlist;
   for ( @_ ){
      my $name = is_name($_) or next;
      push @newlist, uc($name);
   }
   @newlist;
}
[download]

I'd write that as

sub alter {   
    grep $_, map { uc is_name($_) } @_;
}
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instead.

In Perl 6 I'd maybe write something more similar to what you wrote:

sub alter(*@a) {
   gather for @a {
       my $name = is_name($_);
       take uc $name if $name;
   }
}
[download]

Or even

sub alter(*@a) {
   gather for @a.map({ is_name($_)}) {
       take .uc if $_;
   }
}
[download]

Perl 6 - links to (nearly) everything that is Perl 6.

Comment on Re^3: using shift and $_ in loop Select or Download Code

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Re^4: using shift and $_ in loop by leocharre (Priest) on Oct 21, 2009 at 21:01 UTC
Are you going around tempting people to use perl6? I've looked at some specs.. pretty freaking interesting- a little scary too. Like "defined or" .. //= very sexy.. I wonder is all this stuff I'm looking at here actually implemented? Wild.	[reply]
Re^5: using shift and $_ in loop by moritz (Cardinal) on Oct 21, 2009 at 21:51 UTC
Are you going around tempting people to use perl6? Yes. In fact that's how Perl got popular in the first place: people posted easy Perl solutions to problems that were posted in usegroups which got typically answered with examples in shell scripts, sed or awk. I wonder is all this stuff I'm looking at here actually implemented? I haven't tried them, but the examples I gave you use only features that are implemented in Rakudo. Perl 6 - links to (nearly) everything that is Perl 6.	[reply]
Re^5: using shift and $_ in loop by ikegami (Patriarch) on Oct 21, 2009 at 21:10 UTC
`//` and `//=` are present in 5.10	[reply] [d/l] [select]
Re^6: using shift and $_ in loop by leocharre (Priest) on Oct 21, 2009 at 21:16 UTC
Yeah? But perl 5.10 is not present on any of my servers.. Not that it couldn't be made to... hmm.. I suppose maybe that's gonna be the hurdle to getting p6 popular, eh? Getting the compiler/interpreter to actually be widely available. . Ok I shut up now, way off topic- reading up on some super useful p5 to p6 lit.	[reply]