Chris Lattner b1a2059604 Implement the ability to create a Pattern as a set of 'let' decls instead of ...

var decls.  I was originally intending to use this for argument lists, but I
don't think that's a great direction to go anymore.

In any case, it seems uncontroversial to enforce immutability on foreach
enumation patterns, so I did that (see testcase)



Swift SVN r11124

2013-12-11 07:28:13 +00:00

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