Why Ruby?

[Andrej Mitrovic]

Argh it started a new topic. Disregard this I'll reply to original thread.

On 12/19/10, Andrej Mitrovic <andrej.mitrovich at gmail.com> wrote:
> On 12/19/10, Nick Sabalausky <a at a.a> wrote:
>>
>> int foo(int x) { ... }
>> map!"foo(a) * 2" // Trivial lambda, but it fails
>
> Currently this will call unaryFunImpl, which tries to evaluate foo(a)
> at compile-time, but foo isn't visible from std.functional, where
> unaryFunImpl is defined.
>
> I don't know, maybe Phobos could construct a closure out of the string
> somehow if it detected that there's a function call in that string,
> here's some pseudocode modified from std.functional:
>
> template unaryFunImpl(alias fun, bool byRef, string parmName = "a")
> {
>     static if (is(typeof(fun) : string))
>     {
>         // added: detect if there's a function call in that string
>         static if (hasFunctionCalls(fun))
>         {
>             // if so construct a closure, and that should be it
>             alias newclosure result;
>         }
>         else
>         {
>             // Otherwise do as usual in std.functional.unaryFunImpl
>             template Body(ElementType)
>             {
>             }
>             // old code...
>         }
>     }
>     else
>     {
>         alias fun result;
>     }
> }
>