Dune Core Modules (unstable)
Namespace for features backported from new C++ standards. More...
Classes | |
struct | identity |
A function object type whose operator() returns its argument unchanged. More... | |
struct | nonesuch |
Type representing a lookup failure by std::detected_or and friends. More... | |
Typedefs | |
template<typename Default , template< typename... > class Op, typename... Args> | |
using | detected_or = Impl::detector< Default, void, Op, Args... > |
Detects whether Op<Args...> is valid and makes the result available. More... | |
template<template< typename... > class Op, typename... Args> | |
using | is_detected = typename detected_or< nonesuch, Op, Args... >::value_t |
Detects whether Op<Args...> is valid. More... | |
template<template< typename... > class Op, typename... Args> | |
using | detected_t = typename detected_or< nonesuch, Op, Args... >::type |
Returns Op<Args...> if that is valid; otherwise returns nonesuch. More... | |
template<typename Default , template< typename... > class Op, typename... Args> | |
using | detected_or_t = typename detected_or< Default, Op, Args... >::type |
Returns Op<Args...> if that is valid; otherwise returns the fallback type Default . More... | |
template<typename Expected , template< typename... > class Op, typename... Args> | |
using | is_detected_exact = std::is_same< Expected, detected_t< Op, Args... > > |
Checks whether Op<Args...> is Expected without causing an error if Op<Args...> is invalid. More... | |
template<typename Target , template< typename... > class Op, typename... Args> | |
using | is_detected_convertible = std::is_convertible< Target, detected_t< Op, Args... > > |
Checks whether Op<Args...> is convertible to Target without causing an error if Op<Args...> is invalid. More... | |
Detailed Description
Namespace for features backported from new C++ standards.
The namespace Dune::Std contains library features of new C++ standards and technical specifications backported to older compilers. Most features are detected and pulled into this namespace from the standard library if your compiler has native support. If it doesn't, we provide a fallback implementation on a best-effort basis.
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