c++ map.find使用方法函数原型 iterator find (const key_type& k); const_iterator find (const key_type& k) const; 返回值 An iterator to the element, if an element with specified key is found, or map::end otherwise. If the map object is const-qualified, the function returns a const_...
Use thestd::map::findFunction to Find the Element With a Given Key Value in C++ Thestd::mapobject is one of the associative containers in the C++ standard template library, and it implements a sorted data structure, storing key values. Note that keys are unique in thestd::mapcontainer. ...
map find() function in C++ STL map::find()是 C++ STL 中的内置函数,它返回一个迭代器或一个常量迭代器,该迭代器指的是键在映射中出现的位置。如果映射容器中不存在该键,则它返回一个迭代器或一个引用map.end()的常量迭代器。语法: iterator=map_name.find(key) or constant iterator=map_name.find(k...
The unordered_map::find() function in C++ provides a powerful mechanism to efficiently locate the elements within “unordered_map” containers. Its constant average time complexity makes it a preferred choice for search operations in scenarios where the key-value pairs must be accessed swiftly. The...
下面的例子展示了 std::map::find() 函数的用法。 #include <iostream> #include <map> using namespace std; int main(void) { map<char, int> m = { {'a', 1}, {'b', 2}, {'c', 3}, {'d', 4}, {'e', 5}, }; auto it = m.find('c'); cout << "Iterator points to "...
The following example shows the usage of std::map::find() function.Live Demo #include <iostream> #include <map> using namespace std; int main(void) { map<char, int> m = { {'a', 1}, {'b', 2}, {'c', 3}, {'d', 4}, {'e', 5}, }; auto it = m.find('c'); ...
C++ multimap::find() Function - The C++ std::multimap::find() function searches for a specific key within the multimap. It returns an iterator pointing to the first occurrence of the key, or end() if not found. Unlike map, multimap allows duplicate keys.
An iterator that addresses the location of an element with a specified key, or the location succeeding the last element in the map if no match is found for the key. Remarks The member function returns an iterator that addresses an element in the map whose sort key is equivalent to the arg...
/// Compile options needed: -GX// SetFind.cpp:// Illustrates how to use the find function to get an iterator// that points to the first element in the controlled sequence// that has a particular sort key.// Functions:// find Returns an iterator that points to the first elem...
voidSimpleFunctionCall::outputCPPImpl(CodeGenerator &cg, AnalysisResultPtr ar) {boollinemap = outputLineMap(cg, ar,true);if(!m_lambda.empty()) { cg.printf("\"%s\"", m_lambda.c_str());if(linemap) cg.printf(")");return;