Experiment with Lazy Evaluation

[adamhaney]

Since lispy is aimed at mainly providing a functional environment it would be very interesting to me if return types could be lazy. Currently I can think of a very simple way that this would work:

Class LazyResult(object):
    expression = <non evaluated expression>

    def getattr(self, *args, **kwargs):
        return expression.getattr(self, *args, **kwargs)

Expressions instead of being evaluated could just be stored in lazy results that were returned (and any operation against them would cause them to be evaluated). This is just a rough idea and I'm sure it would be more complicated.