Functional Programming - Functional Interface
About
A functional interface is a interface with only one single method that is the basic building block of functional programming.
In a event-driven process, a functional interface is called a event handler.
| Type | Default function signature |
|---|---|
| Supplier of data | R get() |
| Intermediate (filter, map, …) | R apply(S) |
| Consumer | void apply(S) |