metadsl PyData talk

metadsl PyData talk

PyData NYC just ended and I thought it would be good to collect my thoughts on metadsl based on the many conversations I had there surrounding it. This is a rather long post, so if you are just looking for some code here is a Binder link for my talk

What is metadsl?

class Number(metadsl.Expression):
   @metadsl.expression
   def __add__(self, other: Number) -> Number:
       ...

   @metadsl.expression
   @classmethod
   def from_int(cls, i: int) -> Number:
       ...


@metadsl.rule
def add_zero(y: Number):
   yield Number.from_int(0) + y, y
   yield y + Number.from_int(0), y

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