This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 116a. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.

2024-12-19

797. Converting a no-capture lambda to a function type

Section: 7.5.6.2  [expr.prim.lambda.closure]     Status: CD2     Submitter: UK     Date: 3 March, 2009

N2800 comment UK 42

[Voted into WP at March, 2010 meeting as document N3052.]

A lambda with an empty capture list has identical semantics to a regular function type. By requiring this mapping we get an efficient lambda type with a known API that is also compatible with existing operating system and C library functions.

Notes from the July, 2009 meeting:

This functionality is part of the “unified function syntax” proposal and will be considered in that context.