Stop writing lambda expressions in Python

Re:Stop writing lambda expressions in Python by nikofeyn on Thursday September 27, 2018 @04:17PM (#18088165)

i am not for sure what you mean by "original name". the value of each of those function definitions are:

  val test1 : x:int -> int

  val test2 : x:int -> int

you call them the same way, and they have the same type. a caller has no knowledge of how they were defined because it isn't important. they're identical.

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Re:Stop writing lambda expressions in Python by jjnoakes on Thursday September 27, 2018 @05:09PM (#18088705)

I mean in python, one can ask a function what it was originally defined as. Sounds like in F# one can not, so that's why there's a difference in python between "var x = lambda..." and "def y(): ..."; the latter knows it is named "y" and the former has no idea what its name is (so it is "lambda").

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Re:Stop writing lambda expressions in Python by yorwba on Thursday September 27, 2018 @04:35PM (#18088357)

> they're identical.

Does that mean that test1 == test2 will return true?

Personally, I have found it very useful for debugging that function objects in Python carry their name. That makes it much easier to find out where something is coming from.

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