[Python-Dev] Switch statement (original) (raw)

Guido van Rossum guido at python.org
Sun Jun 25 18:28:48 CEST 2006

On 6/24/06, Nick Coghlan <ncoghlan at gmail.com> wrote:

[...] a syntactic nit that Eric Sumner pointed out. Since it involves iteration over x to populate the jump table rather than doing a containment test on x, using 'case in x' is misleading. It would be better written as 'case *x'.

Then: 'case 1:' ==> a switch value of 1 will jump to this case 'case 1, 2:' ==> a switch value of 1 or 2 will jump to this case 'case *x' ==> any switch value in x will jump to this case 'case *x, *y' ==> any switch value in x or y will jump to this case

I'm +0 on this idea, or something similar (maybe my original 'case in' syntax with 'in' replaced by '*'.

I'm going to have to sleep on Nick's 'once' proposal (which deserves a separate thread).

-- --Guido van Rossum (home page: http://www.python.org/~guido/)

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