List<string> 转 List<int> var list = (new[]{"1","2","3"}).ToList();var newlist = list.Select<string,int>(x =>Convert.ToInt32(x)); List<int> 转List<string> List<int> list = new List<int
package java1; public class Che { //属性 public String nub; public int speed; public double weight ; Che() { nub="XX1234"; speed=100; weight=100; } Che(String nub, int speed,double weight) { this.nub = nub; this.speed = speed; this.weight = weight
package a; public class Jidongche { private String chepaihao; private int chesu; private double zaizhong; public String getChepaihao() { return chepaihao; } public void setChepaihao(String chepaihao) { this.chepaihao = chepaihao; } public int getChes
int intA = 0;1.intA =int.Parse(str);2.int.TryParse(str, out intA);3.intA = Convert.ToInt32(str);以上都可以,其中 1和3 需要try{}异常,2不需要. //TryParse() Usage1: int number; bool result = Int32.TryParse(value, out number); // return bool value hint y/n if (result) {
package homework003; import java.util.ArrayList; import java.util.List; public class Text { public static void main(String[] args) { List<Student> list = new ArrayList<>(); list.add(new Student("Tom",18,100,"class05")); lis
int to string #include<iostream> #include<string> using namespace std; int main() { string s; ]; ; itoa(m,c,); s=c; s.insert(,"zhang"); cout<<s<<endl; ; } string to int #include<iostream> #include<string> usin
//Student package zuoye; public class Student { private String name; private int age; private int score; private String classNum; public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { re
当遇到string向int类型转换时会遇到以下问题: 1.字符串非数字格式 2.字符串描述的不是int型 3.转换后越界 这些情况都需要用try catch来捕获异常并处理 安全简单的转换可以用 Int.TryParse(string s, out Int result); 返回值: 转换成功 result输出字符串代表的int数值,并返回true 转换失败result输出0 并返回false public class Program { public static int ConvertStr