Mark J. Reed wrote:
3. the reduction meta-operator [...] : [OP](@list) collects the result of applying OP to the elements of the list in order. That is, assuming foo() is a binary sub, [foo](1,2,3,4) = foo(foo(foo(1,2),3),4). So [+](@list) generates a sum of the listed values, [*] generates their product, etc.
Wow... That's a foldl! In a functional language, that would be called a fold. It's very popular in Haskell.
I like that Perl 6 seems to be taking steps in the direction of functional languages. First lazy lists (0..Inf) and now a fold. :-D
Daniel.
