[Issue 7356] Implement KeyType, ValueType for hashes in std.traits

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http://d.puremagic.com/issues/show_bug.cgi?id=7356



--- Comment #5 from Kenji Hara <k.hara.pg at gmail.com> 2012-01-26 04:07:44 PST ---
(In reply to comment #2)
> Some have "Of", others don't. I don't see what "Of" adds, except verbosity.

IMHO, it comes from the typeof() feature.

First of all, and for fairness, `StringTypeOf` is the one that I added into
Phobos in the past, so original XXXTypeOf is only FunctionTypeOf.

I'm not a native English speaker, but it seems to me that XXXTypeOf!(Y) is more
natural than XXXType!(Y).
The former looks like a sentence, but latter like a noun. This kind of
templates work like meta function, and function name usually contains verb. So
I sometimes feel wrong about the latter.

And, 'KeyType' and 'ValueType' are often used in user code. I think we should
avoid using generic name as the piece of library, as far as possible.

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