public interface Function<F,T>
The Functions class provides common functions and related utilites.
See the Guava User Guide article on the use of Function.
| Modifier and Type | Method and Description |
|---|---|
T |
apply(F input)
Returns the result of applying this function to
input. |
boolean |
equals(java.lang.Object object)
Indicates whether another object is equal to this function.
|
T apply(F input)
input. This method is generally
expected, but not absolutely required, to have the following properties:
Objects.equal(a, b) implies that Objects.equal(function.apply(a),
function.apply(b)).
java.lang.NullPointerException - if input is null and this function does not accept null
argumentsboolean equals(java.lang.Object object)
Most implementations will have no reason to override the behavior of Object.equals(java.lang.Object).
However, an implementation may also choose to return true whenever object is a
Function that it considers interchangeable with this one. "Interchangeable"
typically means that Objects.equal(this.apply(f), that.apply(f)) is true for all
f of type F. Note that a false result from this method does not imply
that the functions are known not to be interchangeable.
equals in class java.lang.Object