标签 C# 数据类型 下的文章
从概念上看,值类型直接存储其值,而引用类型存储对其值的引用。这两种类型存储在内存的不同地方。在C#中,我们必须在设计类型的时候就决定类型实例的行为。这种决定非常重要,用《CLR via C#》作者Jeffrey Richter的话来 说,“不理解引用类型和值类型区别的程序员将会给代码引入诡异的bug和性能问题(I believe that a developer who misunderstands the difference between reference types and value types will introduce subtle bugs and performan...
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp1
{
class BookClass
{
private string title;
private string author;
private string subject;
private int book_id;
...
using System;
namespace ConsoleApplication7
{
class Program
{
static void Main(string[] args)
{
string str1 = "2023";
int num1 = 0;
num1 = int.Parse(str1);
Console.WriteLine(num1);
//如果不能确定字符串是否可以转成数字,可以用int.TryPa...
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp1
{
class Program
{
static void Main(string[] args)
{
string ss = "abcdefg";
char[] cc = ss.ToCharArray();
...