public static void ExplicitInstance()
{
var zeroThreshold = new ThresholdComparer {
Threshold = 0
};
var tenThreshold = new ThresholdComparer {
Threshold = 10
};
var hundredThreshold = new ThresholdComparer {
Threshold = 100
};
Predicate <int> greaterThanZero = zeroThreshold.IsGreaterThan;
Predicate <int> greaterThanTen = tenThreshold.IsGreaterThan;
Predicate <int> greaterThanOneHundred = hundredThreshold.IsGreaterThan;
Console.WriteLine(greaterThanZero(42));
Console.WriteLine(greaterThanTen(42));
Console.WriteLine(greaterThanOneHundred(42));
Predicate <int> megaPredicate1 =
greaterThanZero + greaterThanTen + greaterThanOneHundred;
Predicate <int> megaPredicate2 = greaterThanZero;
megaPredicate2 += greaterThanTen;
megaPredicate2 += greaterThanOneHundred;
}
public static void UsingCreateDelegate()
{
var zeroThreshold = new ThresholdComparer {
Threshold = 0
};
MethodInfo m = typeof(ThresholdComparer).GetMethod("IsGreaterThan");
var greaterThanZero = (Predicate <int>)m.CreateDelegate(
typeof(Predicate <int>), zeroThreshold);
Console.WriteLine(greaterThanZero(42));
}
