dlang 泛型

 1 import std.stdio, std.string;
 2
 3 void main()
 4 {
 5     bool find(T)(T[] all, T sub)
 6     {
 7         foreach(each; all)
 8         {
 9             if(each == sub) return true;
10         }
11         return false;
12     }
13     string[] arr=["stra","strb","strc"];
14     int[] brr=[1,2,3];
15
16     writeln(find(arr,"stra"));
17     writeln(find(arr,"strr"));
18     writeln(find(brr,3));
19     writeln(find(brr,0));
20 }

输出:

true
false
true
false