merging map/filter/reduce/... in D

[glathoud via Digitalmars-d-learn]

Thanks. I am glad be wrong on that one.

I had a look at map & filter in the source code ; pleased to see 
they're lazily implemented!

map
https://github.com/D-Programming-Language/phobos/blob/master/std/algorithm/iteration.d#L425

filter
https://github.com/D-Programming-Language/phobos/blob/master/std/algorithm/iteration.d#L924
I had to look for FilterResult!
https://github.com/D-Programming-Language/phobos/blob/master/std/algorithm/iteration.d#L979

Small remark: One could make the laziness of filter a bit more 
clear in the doc though - at least for newbies like me.
http://dlang.org/phobos/std_algorithm_iteration.html

Best regards,
Guillaume