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Select	Paper	Title	Authors	Audience	Doc Date	Mailing Date
	P3091R4	Better lookups for `map` , `unordered_map`, and `flat_map`	Pablo Halpern P. Halpern	LEWG LWG	2025-06-20	2025-07
Doc Date 2025-06-20 Mailing Date 2025-07 Post-Sofia Author(s) Pablo Halpern Target Audience LEWG LWG Revisions R6 Tracking issue View on GitHub 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 re

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