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//
// Lambda expression test, basics.
//
using System;
delegate int IntFunc (int x);
delegate void VoidFunc (int x);
class X {
static IntFunc func, increment;
static VoidFunc nothing;
static int Main ()
{
int y = 0;
int r;
//
// The following tests body-style lambda
//
increment = (int x) => { return x + 1; };
r = increment (4);
Console.WriteLine ("Should be 5={0}", r);
if (r != 5)
return 1;
//
// This tests the body of a lambda being an expression
//
func = (int x) => x + 1;
r = func (10);
Console.WriteLine ("Should be 11={0}", r);
if (r != 11)
return 2;
//
// The following tests that the body is a statement
//
nothing = (int x) => { y = x; };
nothing (10);
Console.WriteLine ("Should be 10={0}", y);
if (y != 10)
return 3;
nothing = (int x) => { new X (x); };
nothing (314);
if (instantiated_value != 314)
return 4;
Console.WriteLine ("All tests pass");
return 0;
}
static int instantiated_value;
X (int v)
{
instantiated_value = v;
}
}
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