Make a hash out of two ranges

[Chris Cain]

On Thursday, 28 February 2013 at 04:50:34 UTC, Andrej Mitrovic 
wrote:
> On 2/28/13, Chris Cain <clcain at uncg.edu> wrote:
>> Map in std.algorithm doesn't really work like that. Many
>> languages use "map" to mean hashing items, but "map" in
>> functional programming (and D) really means something more like
>> "apply this function to each item."
>
> I know that, I was expecting it to work with multiple ranges if 
> the
> functor takes multiple arguments.
>
>> If you're trying to create an associative array from two arrays
>
> A *lazy* range of associative arrays.
>

Aha, I see now. Here you go:

     zip([1,3], [2,4])
         .map!(e => [e[0] : e[1]])()
         .writeln();

zip gives out a tuple, so I wish it were possible to do
     .map!((a,b) => [a : b])()
instead and have it appropriately use the elements of the tuple. 
Maybe that'd be a potential enhancement possibility for map?