[swift-evolution] RFC: didset and willset

[Brent Royal-Gordon]

> 1. Appear anywhere in the grammar appropriate for their purpose.

Actually, I'll modify this one:

1. Appear anywhere in the grammar appropriate for their purpose, but most commonly in one of the following positions:
	* At the beginning of a statement.
	* Between parts of a keyword-introduced statement.
	* Just before the name in a declaration.
	* In infix operator position.

-- 
Brent Royal-Gordon
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