N3887: Consistent Metafunction Aliases -- Michael Park

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A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.

Document number: N3887

Date: 2013-12-26

Consistent Metafunction Aliases

by Michael Park

Excerpt:

This paper recommends a systematic guideline to steer future WG21 decisions in deciding when a metafunction-name_t template alias should accompany a standard library metafunction. After applying this recommended guideline to the entire C++14 standard library, we conclude that tuple_element_t is the only missing alias. We then propose wording (a) to remedy this lack and (b) to take advantage of the proposed remedy. Finally, we also present an alternative guideline and its implications, and provide justi cations for favoring the recommended guideline.

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