Demystifying the C# Yield-Return Mechanism: Listing 3.
Person class with yield-return filters.
class Person
{
private string name;
private int age;
public Person(string name, int age)
{
this.name = name;
this.age = age;
}
public string Name { get { return this.name; } }
public int Age { get { return this.age; } }
public override string ToString() { return name + " " + age; }
public static IEnumerable<Person> GetYoung(IEnumerable<Person> source)
{
foreach (Person p in source) {
if (p.age < 20)
yield return p;
}
}
public static IEnumerable<Person>
GetStartWithA(IEnumerable<Person> source)
{
foreach (Person p in source) {
if (p.name.StartsWith("A"))
yield return p;
}
}
} // Person
About the Author
Dr. James McCaffrey directs the data science and research efforts at Quaetrix, a data analytics company located near Redmond, Washington. Before joining Quaetrix, James was a senior research engineer at Microsoft. James can be reached at [email protected].