dlang 泛型

import std.stdio, std.string;

void main()
{
    bool find(T)(T[] all, T sub)
    {
        foreach(each; all)
        {
            if(each == sub) return true;    
        }
        return false;
    }
    string[] arr=["stra","strb","strc"];
    int[] brr=[1,2,3];

    writeln(find(arr,"stra"));
    writeln(find(arr,"strr"));
    writeln(find(brr,3));
    writeln(find(brr,0));
}

输出:

true
false
true
false