嵌套类型 定义 difference_type std::incrementable_traits<Iter>::difference_type,如果合法。 否则是 void。 value_type void pointer void reference void iterator_category std::output_iterator_tag 否则,此模板无任何有这些名称的嵌套类型
std::iterator_traits<Iter>::reference是引用类型时是它的右值引用版本 否则是std::iterator_traits<Iter>::reference (C++20 前) 类型定义 iterator_typeIter iterator_category (有条件提供) std::iterator_traits<Iter>::iterator_category无效或表示的不是类型时未定义 ...
template<classForwardIt,classT=typenamestd::iterator_traits<ForwardIt>::value_type,classCompare>boolbinary_search(ForwardIt first, ForwardIt last,constT&value, Compare comp){first=std::lower_bound(first, last, value, comp);return(!(first==last)and!(comp(value,*first)));} ...
std::fill Defined in header<algorithm> (1) template<classForwardIt,classT> voidfill(ForwardIt first, ForwardIt last,constT&value); (constexpr since C++20) (until C++26) template<classForwardIt,classT=typenamestd::iterator_traits <ForwardIt>::value_type> ...
std::basic_string<CharT,Traits,Allocator>:: C++ Strings library std::basic_string basic_string&erase(size_type index=0, size_type count=npos); (1)(constexpr since C++20) (2) iterator erase(iterator position); (until C++11) iterator erase(const_iterator position);...
std::allocator_traits<Allocator>::pointer(seit C++11)[edit] const_pointerAllocator::const_pointer(bis C + +11) std::allocator_traits<Allocator>::const_pointer(seit C++11)[edit] iteratorRandomAccessIterator[edit] const_iterator Constant random access iterator ...
(http://en.cppreference.com/w/cpp/iterator/begin): <urlopen error [Errno 101] Network is unreachable> URL failed (http://en.cppreference.com/w/cpp/memory/allocator_traits): <urlopen error [Errno 101] Network is unreachable> URL failed (http://en.cppreference.com/w/cpp/memory/unique_...
若下列条件成立,则类型It满足老式迭代器(LegacyIterator) 类型It可复制构造(CopyConstructible),且 类型It可复制赋值(CopyAssignable),且 类型It可析构(Destructible),且 类型It可交换(Swappable),且 std::iterator_traits<It>拥有成员 typedefvalue_type、(C++20 前)difference_type、reference、pointer和iterator_catego...
如果某个老式向前迭代器 (LegacyForwardIterator) it 源自某个容器 (Container) ,那么 it 与该容器具有相同的值类型,因此解引用 (*it) 将获得该容器的值类型。 要求类型 定义 X 向前迭代器类型 T X 的值类型(即 std::iterator_traits<X>::value_type) Ref std::iterator_traits<X>::reference 值 定...
casts the result of dereferencing the underlying iterator to its associated rvalue reference type (function) iter_swap (C++20) swaps the objects pointed to by two underlying iterators (function template) Helper classes std::iterator_traits<std::counted_iterator> ...