WG21 PAPERS

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Select	Paper	Title	Authors	Audience	Mailing Date
	P4148R0	protocol: Structural Subtyping for C++	Jonathan B. Coe J. Coe , Hana Dusikova H. Dusikova , Antony Peacock A. Peacock , Philip Craig P. Craig , Neelofer Banglawala N. Banglawala	SG7 SG18	2026-04
Intent Proposal Mailing Date 2026-04 Post-Croydon Author(s) Jonathan B. Coe, Hana Dusikova, Antony Peacock, Philip Craig, Neelofer Banglawala Target Audience SG7 SG18 Revisions R2 R1 Tracking issue View on GitHub Abstract We propose `protocol<T,` `A>` and `protocol_view<T>`, standard library vocabulary types for structural subtyping in C++. Interfaces are specified as plain structs; any type whose member functions satisfy the interface is accepted without requiring explicit inheritance.
	P4161R0	std::fewer	Jeff Snyder J. Snyder , Jonathan B. Coe J. Coe , Neelofer Banglawala N. Banglawala	LEWG LWG	2026-04
Intent Proposal Mailing Date 2026-04 Post-Croydon Author(s) Jeff Snyder, Jonathan B. Coe, Neelofer Banglawala Target Audience LEWG LWG Tracking issue View on GitHub

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