[Python-ideas] Match statement brainstorm

[Ethan Furman]

On 05/24/2016 10:52 PM, Nick Coghlan wrote:

> Using the running demo:
>
>      def demo(arg):
>          given arg:
>              case x, y, *_: # Tuple matching (implicit name binding)
>                  ...
>              case (.x, .y) as p, q: # Attribute matching
>                  ...
>              case (["x"], ["y"]) as p, q: # Item matching
>                  ...
>              case (.x) as p and isinstance(p, int): # Match + condition
>                  ...
>              case if isinstance(arg, int): # Condition only
>                  ...
>              else: # Default
>                  ...
>
> The other key change there is introducing "as" to the individual cases
> in order to be able to separate the match pattern definition from the
> local name binding.

With this one I have a clue as to what's going on.

--
~Ethan~