c# 第五课 string

Strings: immutable(不可变)的unicode字符序列。

string s1 = "One Two Three Four";

string sx = (string)s1.Clone(); //s1复制到sx

Console.WriteLine(Object.ReferenceEquals(s1, sx));  //True:相同引用

sx += “ Five”;//sx修改

Console.WriteLine(Object.ReferenceEquals(s1, sx)); // False:不同的引用

Console.WriteLine(sx); // 显示"One Two Three Four Five"     ToString() method Another common way to create a string is to call the ToString() method on an object and assign the result to astring variable.

int myInteger = 5;

string integerString = myInteger.ToString();

 

split函数  用来过滤字符串中的字符

class Program { static void Main(string[] args) { string words = "one,twot,hree,four,five"; string[] splitedString = words.Split('，'); foreach (string s in splitedString) { Console.Write(s); } }

 输出结果为

其中的“，”被过滤掉了。

转载于:https://www.cnblogs.com/GSONG/p/4440001.html