Func vs. Action vs. Predicate [duplicate]

The difference between Func and Action is simply whether you want the delegate to return a value (use Func) or not (use Action). Func is probably most commonly used in LINQ – for example in projections: list.Select(x => x.SomeProperty) or filtering: list.Where(x => x.SomeValue == someOtherValue) or key selection: list.Join(otherList, x => x.FirstKey, y => … Read more