请看一个大神写的lambda表达式，不用linq请问怎么调用

Question

Func<int, bool> MyAnd(Func<int, bool> f1, Func<int, bool> f2)
{
return x => f1(x) && f2(x);     
}

Answer 1

直接调用也可以：
bool b1 = MyAnd(x => x < 10, x => x % 2 == 0)(4);
bool b2 = MyAnd(x => x < 10, x => x % 2 == 0)(12);