Python 3.7: Introducing Data Classes

Re:Python 3.7: Introducing Data Classes by UncleEntity on Wednesday April 18, 2018 @07:53PM (#16872293)

Dynamic dispatching comes to mind.

  d = {Foo : do_something_with_foo,
       Bar : do_something_with_bar}

  d.get(type(x), default_function)(x)

Probably some more efficient way but honestly I've used this before instead of writing a whole if elif chain.

--edit--

Makes python's lack of a switch operator sometimes less painful...

[ Parent | on HN ]

Re:Python 3.7: Introducing Data Classes by ianamartin on Thursday April 19, 2018 @02:14AM (#16873712)

Oh, that makes sense. Not sure why this question rubbed people the wrong way. I was genuinely curious about when you would use an object as a key.

I guess my uses for dictionaries are pretty vanilla. But that’s a kind of thing I do all the time. I set up dictionaries where the key is a possible value from some operation or query, and the value is the function I want to perform on that value.

This extends that concept. Thanks!

[ Parent | on HN ]