Re: [q-lang-users] New 'where' syntax

[Eddie R. <ed...@bm...>]

Albert Graef,

Super Cool!

>         fact N if N>0:          = N*fact (N-1);
>                otherwise:       = 1;

I think the guards look very similar to Erlang's guards. Compare this to
Erlang:

fact(N) when N>0 ->
    N * fact(N-1);
fact(0) ->
    1.

>         strip C S
>         where N = #S-1 if not null S:
>                 = strip C $ sub S 0 (N-1) if S!N = C;
>                 = strip C $ sub S 1 N if S!0 = C;
>         otherwise:
>                 = S;

> Here, the scope of the condition 'not null S' and the local definition
> 'N = #S-1' encompasses the first two equations.

This is clean. It is like most other programming languages: introduce the
local variable and initialize it before use. I think this will make it
easier for people comming from other languages.

Eddie