[plt-scheme] Fun with Unicode and delimited continuations

On Jun 3, 2010, at 4:33 PM, Matthias Felleisen wrote:

> 
> Can you return them from the function that grabs them (in Python)? 
> Can you resume the function once it has transfered control somewhere else? 
> Can you store the continuations in some vector? 
> 
> (I don't know the answers, but these are some of the things one can do with 1st-class values.) 

Yes:

def grabK () : yield 1 ; print "running..." ; yield 2

def grabAFewKonts () :
    return [grabK () , grabK ()]

a = grabAFewKonts();

f = a[0];
g = a[1];

print(f.next());
print(f.next());
print(g.next());


==>

pcp062805pcs:~/.ssh clements$ python /tmp/foo.py
1
running...
2
1


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