想知道为什么String在使用==时表现得像值类型.
String s1 = "Hello";
String s2 = "Hello";
Console.WriteLine(s1 == s2);// True(why? s1 and s2 are different)
Console.WriteLine(s1.Equals(s2));//True
StringBuilder a1 = new StringBuilder("Hi");
StringBuilder a2 = new StringBuilder("Hi");
Console.WriteLine(a1 == a2);//false
Console.WriteLine(a1.Equals(a2));//true
StringBuilder和String的行为与==运算符不同.
谢谢.
