m.insert(make_pair(1, "Z")); // 索引是原先没有的,直接插入;索引已经存在直接修改 m[22] = "X"; m[3] = "X"; // 当索引是不存在的值,成功插入;当索引已经存在,则不进行操作 m.emplace(pair<int, string>(21, "W")); m.emplace(pair<int, string>(1, "W")); map<int, string>::...
map<int,string>mapA;mapA.insert(pair<int,string>(3,"小张"));mapA.insert(pair<int,string>(1,"小杨"));mapA.insert(pair<int,string>(7,"小赵"));mapA.insert(pair<int,string>(5,"小王"));map<int,string>mapB(mapA);//拷贝构造map<int,string>mapC;mapC=mapA;//赋值mapC[3]="老张";...
make_pair Create account std::make_pair Defined in header<utility> template<classT1,classT2> std::pair<T1, T2>make_pair(T1 x, T2 y); (until C++11) template<classT1,classT2> std::pair</*V1*/,/*V2*/>make_pair(T1&&x, T2&&y);...
含有给定值的 std::pair 对象。 示例运行此代码 #include <functional> #include <iostream> #include <utility> int main() { int n = 1; int a[5] = {1, 2, 3, 4, 5}; // 从两个 int 建造 pair auto p1 = std::make_pair(n, a[1]); std::cout << "p1 的值是 " << '(' <...
corres.push_back(make_pair(a, b)); } } return corres; } 6、setDepth() 设置特征点的逆深度估计值 void FeatureManager::setDepth(const VectorXd &x) { int feature_index = -1;// 先给feature ID赋值-1 for (auto &it_per_id : feature)// 遍历所有特征点 ...
MakefileApplication MakeSameHeight ManageCounterSets ManifestFile ManualTest ManyToMany MapInternal MapItemInternal MapItemPrivate MapItemProtected MapItemPublic MapItemSealed MapItemShortcut MapLayerWizard MapLineLayer MappedBreakpointDisabled MappedBreakpointEnabled MappedTracepointDisabled MappedTracepointEnabled...
Make it yours today! Advertisement. Bad banner? Please let us know Remove Ads References in periodicals archive ? 'She joined the people in opposing big mining operations which plunder mountains, poison rivers and destroy the land,' the CPP said. CPP on Gina Lopez death: 'A loss to Filipino...
cudf::detail::make_pair_iterator can be used to create a pair iterator from a column_device_view or a cudf::scalar. make_pair_iterator is not available for mutable_column_device_view. Null-replacement iterator This iterator replaces the null/validity value for each element with a specified ...
Cpp 中的 struct 不同于 C 中的 struct,cpp 的 struct 被扩展为类似 class 的类说明符。 结构体是一系列成员元素的组合体,允许存储不同类型的数据项,成员变量可以是各种数据类型,包括整数、浮点数、字符串、其他结构体等,所以你可以根据需要定义自己的结构体来组织数据。
typedef buffers_iterator<streambuf::const_buffers_type> iterator; std::pair<iterator, bool> match_punct(iterator begin, iterator end) { while ( begin != end) if ( std::ispunct(*begin)) return std::make_pair(begin,true); return std::make_pair(end,false); } void on_read(const boost...