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Paper Title Authors Audience Doc Date Audit
P3091R6 Better lookups for `map` , `unordered_map`, and `flat_map` P. Halpern
LWG
Mailing Date 2026-07 Post-Brno
Author(s) Pablo Halpern
Target Audience LWG
Tracking issue View on GitHub
Disposition Date 2026-06
Abstract The most convenient way to look up an element of a `map` -like container is to use the index operator, i.e., `theMap[key]` . This operator cannot be used, however, when 1) the container is `const` , 2) the mapped type is not default constructible, 3) the default-constructed value is inappropriate for the context, or 4) the container should not be modified. These limitations often force the user to
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