## Uses of Interface
org.apache.commons.lang3.function.FailableFunction

- Packages that use FailableFunction
  Package | Description
  --- | ---
  org.apache.commons.lang3.concurrent.locks | Provides support classes for multi-threaded programming.
  org.apache.commons.lang3.function | Provides functional interfaces to complement those in `java.lang.function` and utilities for working with Java 8 lambdas.
  org.apache.commons.lang3.stream | Provides utility classes to complement those in `java.util.stream`.

- - ### Uses of FailableFunction in org.apache.commons.lang3.concurrent.locks

    Methods in org.apache.commons.lang3.concurrent.locks with parameters of type FailableFunction
    Modifier and Type | Method and Description
    --- | ---
    `<T> T` | LockingVisitors.LockVisitor.`applyReadLocked(FailableFunction<O,T,?> function)` Provides read (shared, non-exclusive) access to the locked (hidden) object for the purpose of computing a result object.
    `<T> T` | LockingVisitors.LockVisitor.`applyWriteLocked(FailableFunction<O,T,?> function)` Provides write (exclusive) access to the locked (hidden) object for the purpose of computing a result object.
    `protected <T> T` | LockingVisitors.LockVisitor.`lockApplyUnlock(Supplier<Lock> lockSupplier, FailableFunction<O,T,?> function)` This method provides the actual implementation for `LockingVisitors.LockVisitor.applyReadLocked(FailableFunction)`, and `LockingVisitors.LockVisitor.applyWriteLocked(FailableFunction)`.

  - ### Uses of FailableFunction in org.apache.commons.lang3.function

    Fields in org.apache.commons.lang3.function declared as FailableFunction
    Modifier and Type | Field and Description
    --- | ---
    `static FailableFunction` | FailableFunction.`NOP` NOP singleton

    Methods in org.apache.commons.lang3.function that return FailableFunction
    Modifier and Type | Method and Description
    --- | ---
    `default <V> FailableFunction<T,V,E>` | FailableFunction.`andThen(FailableFunction<? super R,? extends V,E> after)` Returns a composed `FailableFunction` like `Function.andThen(Function)`.
    `default <V> FailableFunction<V,R,E>` | FailableFunction.`compose(FailableFunction<? super V,? extends T,E> before)` Returns a composed `FailableFunction` like `Function.compose(Function)`.
    `static <T,E extends Throwable> FailableFunction<T,T,E>` | FailableFunction.`identity()` Returns a function that always returns its input argument.
    `static <T,R,E extends Throwable> FailableFunction<T,R,E>` | FailableFunction.`nop()` Returns The NOP singleton.

    Methods in org.apache.commons.lang3.function with parameters of type FailableFunction
    Modifier and Type | Method and Description
    --- | ---
    `default <V> FailableBiFunction<T,U,V,E>` | FailableBiFunction.`andThen(FailableFunction<? super R,? extends V,E> after)` Returns a composed `FailableBiFunction` that like `BiFunction.andThen(Function)`.
    `default <V> FailableFunction<T,V,E>` | FailableFunction.`andThen(FailableFunction<? super R,? extends V,E> after)` Returns a composed `FailableFunction` like `Function.andThen(Function)`.
    `static <T,R,E extends Throwable> R` | Failable.`apply(FailableFunction<T,R,E> function, T input)` Applies a function and rethrows any exception as a `RuntimeException`.
    `static <T,R> Function<T,R>` | Failable.`asFunction(FailableFunction<T,R,?> function)` Converts the given `FailableFunction` into a standard `Function`.
    `default <V> FailableFunction<V,R,E>` | FailableFunction.`compose(FailableFunction<? super V,? extends T,E> before)` Returns a composed `FailableFunction` like `Function.compose(Function)`.

  - ### Uses of FailableFunction in org.apache.commons.lang3.stream

    Methods in org.apache.commons.lang3.stream with parameters of type FailableFunction
    Modifier and Type | Method and Description
    --- | ---
    `<R> Streams.FailableStream<R>` | Streams.FailableStream.`map(FailableFunction<O,R,?> mapper)` Returns a stream consisting of the results of applying the given function to the elements of this stream.

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