Package org.organicdesign.fp.function

Interface Fn0<U>

  • All Superinterfaces:
    Callable<U>, Supplier<U>
    All Known Implementing Classes:
    LazyRef
    Functional Interface:
    This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
    @FunctionalInterface
public interface Fn0<U>
extends Supplier<U>, Callable<U>
    This is like Java 8's java.util.function.Supplier, but retrofitted to turn checked exceptions into unchecked ones. It's also called a thunk when used to delay evaluation.

    • Method Summary

      All Methods Instance Methods Abstract Methods Default Methods 
      Modifier and Type Method Description
      default U apply()
      The class that takes a consumer as an argument uses this convenience method so that it doesn't have to worry about checked exceptions either.
      U applyEx()
      Implement this one method and you don't have to worry about checked exceptions.
      default U call()
      default U get()

    • Method Detail

      • applyEx

        U applyEx()
   throws Exception
        Implement this one method and you don't have to worry about checked exceptions.
        Throws:
        Exception

      • apply

        default U apply()
        The class that takes a consumer as an argument uses this convenience method so that it doesn't have to worry about checked exceptions either.

      • get

        default U get()
        Specified by:
        get in interface Supplier<U>