[swift-evolution] [PITCH] ADD AN @RESTRICTED DECLARATION ATTRIBUTE

[Brent Royal-Gordon]

> @available(OS X 10.9, restricted)

Personally, I would prefer something like this, perhaps spelled:

	@available(OS X 10.9, only)

When using shorthand form, you would have to write either `*` or `only` as the last element. `*` means "and any other platforms", while `only` means "only the listed platforms".

-- 
Brent Royal-Gordon
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