yminer / pyshen Goto Github PK

Uncurrying is not correctly supported in pyshen. I had the same problem when I first implemented ShenRuby.

You can pass the full Shen test suite without it, but when you try to run through the examples in Shen in 15 minutes you'll find that ((/. X Y (* X Y)) 6 7) does not produce 42 like expected, but instead gives:

0-) ((/. X Y (* X Y)) 6 7)
<functools.partial object at 0x10b009578>

This form compiles to the KLambda expression ((lambda X (lambda Y (* X Y))) 6 7). The KLambda implementation is expected to support uncurrying and treat it as the equivalent of (((lambda X (lambda Y (* X Y))) 6) 7).

It may not be applicable to your implementation approach, but you can see the relevant code for how I ended up handling this in ShenRuby here.