[Ocaml-lib-devel] Re: some proposals

[Alan P. <ap...@re...>]

In article <slr...@re...>, Alan Post wrote:
> 
> The perl map function allows the number of outgoing items to be
> other than 1, for instance:
> 
>   my @l2 = map { if ( filter( $_ ) { $_ } else {()}} @l1;
> 
> or:
> 
>   my %h = map { $_, f( $_ )} @l;

I just realized that perl map is simply:

  let merge_map f e = Enum.concat (Enum.map List.enum (Enum.map f e))