Re: [boost] Re: yield statement proposal

From: Giovanni P. Deretta (gpderetta_at_[hidden])
Date: 2005-06-02 21:14:55

Edward Diener wrote:
> Maksym Motornyy wrote:
[...]
>> As of version 2.0 C# will have yield statement. It intended for 
>> simplifying iterator development. Yield suspends execution of iterator 
>> code and resumes it on next increment. Thus complex traversal 
>> iterators are much easier to write in natural loop-like form instead 
>> of unroll them.
> 
> 
> Nicely stolen from Python <g>.
> 

I think that yield is part of the general concept of coroutines and has 
not really been invented by Python nor C# (Knuth if I remember 
correctly). Then again, I did not really read anything about the C# 
yield, so I'm not sure it is really about coroutines (btw, why the 
"yield return" syntax and not just "yield"?).

Speaking of more Boost centric stuff? There has been any proposal of a 
coroutine library? I think it should definitely be useful and not really 
that hard to implement (fibers on windows and makecontext or the 
setjump/sigaltstack trick on unices).  Anyone interested?

Regards,

----
Giovanni P. Deretta