public void Either_Maps()
{
Func<int, int> f = (x) => x + 3;
var r = new Either.Right<string, int> (4);
var res = r.FMap (f);
Assert.IsTrue (res is Either.Right<string, int>);
Assert.AreEqual ((res as Either.Right<string, int>).r, 7);
var l = new Either.Left<string, int> ("blah");
res = l.FMap (f);
Assert.IsTrue (res is Either.Left<string, int>);
}
public void Either_Maps()
{
Func <int, int> f = (x) => x + 3;
var r = new Either.Right <string, int> (4);
var res = r.FMap(f);
Assert.IsTrue(res is Either.Right <string, int>);
Assert.AreEqual((res as Either.Right <string, int>).r, 7);
var l = new Either.Left <string, int> ("blah");
res = l.FMap(f);
Assert.IsTrue(res is Either.Left <string, int>);
}