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Re: Combinatorics

by Aristotle (Chancellor)
on Aug 22, 2002 at 03:23 UTC ( #191916=note: print w/replies, xml ) Need Help??

in reply to Combinatorics

#!/usr/bin/perl -w use strict; use Data::Dumper; sub unshift_many { my $scalar = shift; unshift @$_, $scalar for @_; @_; } sub combinations { my ( $array, $len, $start ) = @_; $start ||= 0; return unless $len > 0; return $len == 1 ? map [ $_ ], @{ $array }[ $start .. $#$array ] : map unshift_many( $array->[$_], combinations( $array, $len-1 +, $_+1 ) ), $start .. $#$array; } $Data::Dumper::Indent=0; print Dumper( [ combinations [ qw( 1 2 3 4 5 ) ], 3 ] ), "\n";

Makeshifts last the longest.

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Corion idly wonders about creating a series of HTTP requests. There seems to be no framework to generate a series of HTTP requests, like "try all these requests"
[Corion]: This is vaguely inspired by that list of "nasty" strings, which I'd like to replace among HTTP parameters, just to see whether the application crashes, but also for easy downloading of a list of URLs etc
[Corion]: Maybe I'll just conoct something using Algorithm::Permute to create an (OO) generator for such requests, or a simple function.

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