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## com.opensymphony.xwork2.inject.util
Interface Function<F,T>

    public interface Function<F,T>

A Function provides a transformation on an object and returns the resulting object. For example, a `StringToIntegerFunction` may implement `Function<String,Integer>` and transform integers in String format to Integer format.

The transformation on the source object does not necessarily result in an object of a different type. For example, a `FarenheitToCelciusFunction` may implement `Function<Float,Float>`.

Implementors of Function which may cause side effects upon evaluation are strongly encouraged to state this fact clearly in their API documentation.

Method Summary
`T` | `apply(F from)` Applies the function to an object of type `F`, resulting in an object of type `T`.

Method Detail

### apply

    T apply(F from)

  Applies the function to an object of type `F`, resulting in an object of type `T`. Note that types `F` and `T` may or may not be the same.

  Parameters:
    `from` - The source object.
  Returns:
    The resulting object.

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