Beefy Boxes and Bandwidth Generously Provided by pair Networks
Your skill will accomplish
what the force of many cannot

Perl 6's part()

by BrentDax (Hermit)
on Jan 10, 2003 at 03:21 UTC ( #225721=snippet: print w/ replies, xml ) Need Help??

Description: Perl 6 is slated to include a new list manipulation function, part (for partition, although Damian likes it 'cause it can mean so many other things). It takes a codeblock and a list; the codeblock returns an index, and part puts it into an arrayref corresponding to that index. For example:
my($good, $bad, $ugly)=part { /good/ ? 0 : /bad/ ? 1 : /ugly/ ? 2 : (warn "$_ didn't categorize" and 3) } @people;
If you replace the $good, $bad, and $ugly with *good, *bad, and *ugly in that example, you'll get the arrays in @good, @bad and @ugly.
sub part(&@) {
    my($code, @list)=@_;
    my @ret=();
    push @{$ret[&$code()]}, $_ for @list;
    return @ret;
Comment on Perl 6's part()
Download Code
Replies are listed 'Best First'.
Re: Perl 6's part()
by jdporter (Canon) on Jan 10, 2003 at 03:52 UTC
    Hmm. Interesting.
    I like that I can do this:
    my %h; @h{qw( good bad ugly )} = part { /good/ ? 0 . . . } @people;

    The 6th Rule of Perl Club is -- There is no Rule #6.

Re: Perl 6's part()
by mojotoad (Monsignor) on Jan 10, 2003 at 17:58 UTC

Back to Snippets Section

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: snippet [id://225721]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others taking refuge in the Monastery: (4)
As of 2015-10-08 22:55 GMT
Find Nodes?
    Voting Booth?

    Does Humor Belong in Programming?

    Results (231 votes), past polls