CXXIter::concepts::DoubleEndedSourceContainer Concept Reference

Concept that checks whether the given TContainer supports double-ended iteration when using CXXIter's standard source classes CXXIter::SrcMov, CXXIter::SrcRef and CXXIter::SrcCRef. More...

#include <Concepts.h>

Concept definition

template<typename TContainer>
concept CXXIter::concepts::DoubleEndedSourceContainer =  SourceContainer<TContainer> && requires(
        TContainer& container,
        const TContainer& constContainer,
        typename trait::Source<TContainer>::IteratorState& iterState,
        typename trait::Source<TContainer>::ConstIteratorState& constIterState,
        size_t n
        ) {
 
        {trait::Source<TContainer>::nextBack(container, iterState)} -> std::same_as<typename trait::Source<TContainer>::ItemRef>;
        {trait::Source<TContainer>::nextBack(constContainer, constIterState)} -> std::same_as<typename trait::Source<TContainer>::ItemConstRef>;
 
        {trait::Source<TContainer>::skipNBack(container, iterState, n)} -> std::same_as<size_t>;
        {trait::Source<TContainer>::skipNBack(container, constIterState, n)} -> std::same_as<size_t>;
    }

Detailed Description

Concept that checks whether the given TContainer supports double-ended iteration when using CXXIter's standard source classes CXXIter::SrcMov, CXXIter::SrcRef and CXXIter::SrcCRef.

The concept does these checks by testing whether the optional double-ended part in CXXIter::trait::Source was properly provided by the specialization for the given TContainer type.

See also

CXXIter::Source for further details on this.

Definition at line 54 of file Concepts.h.