要机器学习,这方面内容不可少. import numpy as np import time # 对比标准python实现和numpy实现的性能差异 def sum_trad(): start = time.time() X = range(1000000) Y = range(1000000) Z = [] for i in range(len(X)): Z.append(X[i] + Y[i]) return time.time() - start def sum_numpy(): star…
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; using System.Threading.Tasks; namespace 线程同步_线程异步 { //打印类 public class Printer { //打印数字的方法 public void PrintNumbers() { Console.WriteLine("-…
package main import "fmt" type user struct { name string age int sex string } type admin struct { person user level string } func main() { u := user{name: "zhangsan", age: 12, sex: "女"} u.userReciver("里默默") //Go在代码背…
