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2926. INVOKE(f, t1, t2,... tN) and INVOKE(f, t1, t2,... tN, R) are too similar

Section: 22.10.4 [func.require] Status: Resolved Submitter: United States Opened: 2017-02-03 Last modified: 2017-03-20

Priority: Not Prioritized

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Discussion:

The distinction between INVOKE(f, t1, t2,... tN) and INVOKE(f, t1, t2,... tN, R) is too subtle. If the last argument is an expression, it represents tN, if it's a type, then it represents R. Very clumsy.

Proposed change: Rename INVOKE(f, t1, t2,... tN, R) to INVOKE_R(R, f, t1, t2,... tN) and adjust all uses of this form. (Approximately 10 occurrences of invoke would need to change.)

[2017-02-24, Daniel comments]

I suggest to apply the paper d0604r0, available on the Kona LWG wiki, implements this suggestions.

[2017-03-12, post-Kona]

Resolved by p0604r0.

Proposed resolution: