插入方法

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map的三种插入方法和常用函数以及一些小问题

#include <bits/stdc++.h> using namespace std; #define x first #define y second map<int, int> a; map<pair<int, int>, int > b; map<int, pair<int, int> > c; int main() { for (int i = 1; i <= 3; i ++ ) { a[i] =

python四种列表的插入方法及其效率

coding:utf-8 from timeit import timeit def count_append(): lists = [] for x in range(0, 100000): lists.append(x) cost_time = timeit(stmt=count_append, number=1) print("append花费的时间是", cost_time) def count_extend(): lists = [] for x in range(0, 10

Sql批量插入方法

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Data.Common;using System.Data.Entity;using System.Data.SqlClient;using System.Linq; namespace TY.Tools{ /// <summary> /// 批量插入