ISO/IEC TS 19217
Information technology - Programming languages - C++ Extensions for concepts
Organization: | ISO |
Publication Date: | 15 November 2015 |
Status: | active |
Page Count: | 60 |
ICS Code (Languages used in information technology): | 35.060 |
scope:
This Technical Specification describes extensions to the C++ Programming Language (1.2) that enable the specification and checking of constraints on template arguments, and the ability to overload functions and specialize class templates based on those constraints. These extensions include new syntactic forms and modifications to existing language semantics.
The International Standard, ISO/IEC 14882, provides important context and specification for this Technical Specification. This document is written as a set of changes against that specification. Instructions to modify or add paragraphs are written as explicit instructions. Modifications made directly to existing text from the International Standard use underlining to represent added text and to represent deleted text.
WG21 paper N4191 defines "fold expressions", which are used to
define constraint expressions resulting from the use of
constrained-paramete