Package io.vavr

Class API.ForLazy4Validation<L,T1,T2,T3,T4>

java.lang.Object
io.vavr.API.ForLazy4Validation<L,T1,T2,T3,T4>
Type Parameters:
L - the common left-hand type of all Validations
T1 - the component type of the 1st Validation
T2 - the component type of the 2nd Validation
T3 - the component type of the 3rd Validation
T4 - the component type of the 4th Validation
Enclosing class:
API
public static class API.ForLazy4Validation<L,T1,T2,T3,T4> extends Object
A lazily evaluated For-comprehension with 4 Validations.

Constructed via For(...) and evaluated by calling yield(...). Construction is side-effect free; underlying Validations are traversed only when yield(...) is invoked.

  • Method Details

    • yield

      public <R> Validation<L,R> yield(@NonNull Function4<? super T1,? super T2,? super T3,? super T4,? extends R> f)
      Produces results by mapping the Cartesian product of all bound values.

      Evaluation is lazy and delegated to the underlying Validations by composing flatMap and map chains.

      Type Parameters:
      R - the element type of the resulting Validation
      Parameters:
      f - a function mapping a tuple of bound values to a result
      Returns:
      an Validation containing mapped results
      Throws:
      NullPointerException - if f is null