Downcast

java.lang.Object
- com.jnape.palatable.lambda.functions.builtin.fn1.Downcast<A,B>

Type Parameters:

A - the subtype

B - the supertype

All Implemented Interfaces:

Fn1<B,A>, Applicative<A,Fn1<B,?>>, Cartesian<B,A,Fn1<?,?>>, Cocartesian<B,A,Fn1<?,?>>, Contravariant<B,Profunctor<?,A,Fn1<?,?>>>, Functor<A,Fn1<B,?>>, Profunctor<B,A,Fn1<?,?>>, Monad<A,Fn1<B,?>>, MonadReader<B,A,Fn1<B,?>>, MonadRec<A,Fn1<B,?>>, MonadWriter<B,A,Fn1<B,?>>
```
public final class Downcast<A extends B,B>
extends java.lang.Object
implements Fn1<B,A>
```
Covariantly cast a value of type B to a value of subtype A. Unsafe.

Field Summary

Fields
Modifier and Type Field Description

private static Downcast<?,?> INSTANCE

Constructor Summary

Constructors
Modifier Constructor Description

private Downcast()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`A`	`checkedApply(B b)`	Invoke this function with the given argument, potentially throwing any `Throwable`.
`static <A extends B,B> Downcast<A,B>`	`downcast()`
`static <A extends B,B> A`	`downcast(B b)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.jnape.palatable.lambda.functions.Fn1
andThen, apply, carry, cartesian, censor, choose, cocartesian, compose, contraMap, diMap, diMapL, diMapR, discardL, discardR, flatMap, fmap, lazyZip, listens, local, pure, self, thunk, toFunction, trampolineM, widen, zip, zip

Methods inherited from interface com.jnape.palatable.lambda.functor.Functor
coerce

- Field Detail
  - INSTANCE
```
private static final Downcast<?,?> INSTANCE
```
- Constructor Detail
  - Downcast
```
private Downcast()
```
- Method Detail
  - checkedApply
```
public A checkedApply(B b)
```
    Description copied from interface: Fn1
    
    Invoke this function with the given argument, potentially throwing any Throwable.
    
    Specified by:
    
    checkedApply in interface Fn1<A extends B,B>
    
    Parameters:
    
    b - the argument
    
    Returns:
    
    the result of the function application
  - downcast
```
public static <A extends B,B> Downcast<A,B> downcast()
```
  - downcast
```
public static <A extends B,B> A downcast(B b)
```