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

Packages that use FailableToBooleanFunction
Package
Description
org.apache.commons.lang3.function
Provides functional interfaces to complement those in `java.lang.function` and utilities for working with Java 8 lambdas.

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

  Fields in org.apache.commons.lang3.function declared as FailableToBooleanFunction
  Modifier and Type
  Field
  Description
  `static final FailableToBooleanFunction`
  FailableToBooleanFunction.`NOP`
  NOP singleton
  Methods in org.apache.commons.lang3.function that return FailableToBooleanFunction
  Modifier and Type
  Method
  Description
  `static <T, E extends Throwable>
  FailableToBooleanFunction<T,E>`
  FailableToBooleanFunction.`nop()`
  Gets the NOP singleton.