[chuck-users] Guile C++ wrap

Hans Aberg haberg-1 at telia.com
Mon Mar 22 10:53:19 EDT 2010

On 22 Mar 2010, at 15:07, Kassen wrote:

> One of the main things that I like about Scheme is the REPL.
> It struck me that the original plan for chuck --shell isn't  
> completely unlike a REPL in how interaction might work for  
> performance or rapid prototyping. We have some framework for that,  
> in that our parser, compiler and VM all live in the same memory  
> space so if we would want to update some function foo() the system  
> should be able to find what bytecode was generated from the original  
> foo() and replace that with the new one.
> Sadly that idea hasn't received much attention in recent days, but  
> in the Bad Old Days it was treated as rather central to ChucK.
> Personally I'm more interested in the method of interaction than in  
> the exact language used for it; I'd rather look into that stuff than  
> into a more functional (in the CS sense of the word) syntax as such.

The way Guile works, being a library, is that there are functions for  
interpreting code. So I implemented those functions into some class  
objects, so that one can write:
   function1<integer, integer> inc("(lambda (x) (+ x 1))");
instead of the
   symbol<integer> x("x");
   function1<integer, integer> inc = x >>= x + 1;

Now a read-evaluation-print loop just has a line editor which reads  
input lines and passes it to some such function, and the prints back  
the resulting string. - There is a function display() by which any  
object can be made human readable, though not in a way that it can be  
converted back to Scheme code.

So perhaps ChucK might be made into some library, though it is great  
of not having to fiddle around with C/C++ programming. But having the  
option might be useful.


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