C# 7.0 adds accessors, constructors and finalizers to the list of things that can have expression bodies:
class Person
{
private static ConcurrentDictionary<int, string> names = new ConcurrentDictionary<int, string>();
private int id = GetId();
public Person(string name) => names.TryAdd(id, name); // constructors
~Person() => names.TryRemove(id, out _); // finalizers
public string Name
{
get => names[id]; // getters
set => names[id] = value; // setters
}
}
Also see the out var declaration section for the discard operator.