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### 1082. `codecvt` needs to be a concept-constrained template

Section: 30 [localization] Status: NAD Concepts Submitter: Howard Hinnant Opened: 2009-03-22 Last modified: 2016-01-28

Priority: Not Prioritized

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Discussion:

Addresses JP 49 [CD1]

`codecvt` does not use concept. For example, create `CodeConvert` concept and change as follows.

>     template<CodeConvert Codecvt, class Elem = wchar_t>
>       class wstring_convert {

[ Summit: ]

> To be handled by Howard Hinnant, Dave Abrahams, Martin Sebor, PJ Plauger.

Proposed resolution: