Michele Dondi writes:
> Quite similarly, for example, I'd like to have a fold() function like the
> one that is available in many functional programming languages, a la:
>
> my $tot = fold 0, { + }, 1..10; # 55
> my $fact = fold 1, { * }, 2..5; # 120
>
> (i.e. please DO NOT point out that there other WTDI: it's obvious that
> there are...)
Well, Perl 6 is coming with one of those as a builtin, called C<reduce>
(see List::Util). But you can't quite use a shorthand syntax like
yours. You have to say either:
my $tot = reduce { $^a + $^b } 1..10; # 55
Or:
my $tot = reduce &operator:+ <== 1..10; # 55
(The <== was added as documentation; it could have been a comma as
well).
Luke
