A new WG21 paper is available. A copy is linked below, and the paper will also appear in the next normal WG21 mailing. If you are not a committee member, please use the comments section below or the std-proposals forum for public discussion.

Document number: N3560

Date: 2013-03-17

Proposal for Assorted Extensions to Lambda Expressions

by Faisal Vali, Herb Sutter, Dave Abrahams

Excerpt:

We propose extensions to lambda expressions motivated by the general view that lambda expressions should allow for a concise and complete description of a callable unit of computation. In addition to containing those features from document N3418: Proposal for Generic (Polymorphic) Lambda Expressions that received against votes in Portland (2012), it also contains other small extensions to lambdas. We also present our experience implementing some of the features using Clang.

... The aim of this paper is to propose various extensions to lambda expressions (generic and non-generic) to simplify and enhance their use. This proposal builds on N3559 (which defines a generic lambda). We assume the reader is familiar with C++11 lambdas and the content of N3559.

It is important to note that not all the authors of this paper are in favor of each and every one of these proposed features and the purpose of this paper is to seek guidance from the EWG regarding which features are worth pursuing further.