How D addresses the problem of Extending and/or Embedding other languages ?

[via Digitalmars-d]

On Tuesday, 26 August 2014 at 14:46:56 UTC, Jacob Carlborg wrote:
> On 26/08/14 13:40, "Marc Schütz" <schuetzm at gmx.net>" wrote:
>
>> I've heard about them, but I don't know any details. Anyway, 
>> the way
>> Ruby works, they either need to restrict the language, include 
>> a full
>> interpreter/jitter, or at most they could only translate it to 
>> a very
>> abstract level. Like for an expression like `a + b` generating 
>> a call to
>> a helper function like `send(_var_a, SYMBOL(":+"), _var_b);`, 
>> and hoping
>> that the compiler backend can eliminate this in some cases.
>
> It's implemented on top of Objective-C.

This makes sense, Objective-C can cope with classes that change 
at runtime. Singleton methods are probably more challenging, 
though...