com.jnape.palatable.lambda.functions.builtin.fn2

Class AutoBracket<A extends AutoCloseable,B>

java.lang.Object

com.jnape.palatable.lambda.functions.builtin.fn2.AutoBracket<A,B>

Type Parameters:

A - the initial AutoCloseable value type to map and clean up

B - the resulting type

All Implemented Interfaces:

Fn1<IO<A>,Fn1<Fn1<? super A,? extends IO<B>>,IO<B>>>, Fn2<IO<A>,Fn1<? super A,? extends IO<B>>,IO<B>>, Applicative<Fn1<Fn1<? super A,? extends IO<B>>,IO<B>>,Fn1<IO<A>,?>>, Cartesian<IO<A>,Fn1<Fn1<? super A,? extends IO<B>>,IO<B>>,Fn1<?,?>>, Cocartesian<IO<A>,Fn1<Fn1<? super A,? extends IO<B>>,IO<B>>,Fn1<?,?>>, Contravariant<IO<A>,Profunctor<?,Fn1<Fn1<? super A,? extends IO<B>>,IO<B>>,Fn1<?,?>>>, Functor<Fn1<Fn1<? super A,? extends IO<B>>,IO<B>>,Fn1<IO<A>,?>>, Profunctor<IO<A>,Fn1<Fn1<? super A,? extends IO<B>>,IO<B>>,Fn1<?,?>>, Monad<Fn1<Fn1<? super A,? extends IO<B>>,IO<B>>,Fn1<IO<A>,?>>, MonadReader<IO<A>,Fn1<Fn1<? super A,? extends IO<B>>,IO<B>>,Fn1<IO<A>,?>>, MonadRec<Fn1<Fn1<? super A,? extends IO<B>>,IO<B>>,Fn1<IO<A>,?>>, MonadWriter<IO<A>,Fn1<Fn1<? super A,? extends IO<B>>,IO<B>>,Fn1<IO<A>,?>>

public final class AutoBracket<A extends AutoCloseable,B>
extends Object
implements Fn2<IO<A>,Fn1<? super A,? extends IO<B>>,IO<B>>

Given an IO yielding some AutoCloseable type A and a kleisli arrow from that type to a new IO of type B, attempt to provision the A, applying the body operation if provisioning was successful and ensuring that AutoCloseable.close() is called regardless of whether the body succeeds or fails.

This is the canonical bracketing operation for AutoCloseables.

See Also:

Bracket

Method Summary

Modifier and Type	Method and Description
static <A extends AutoCloseable,B> AutoBracket<A,B>	autoBracket()
static <A extends AutoCloseable,B> Fn1<Fn1<? super A,? extends IO<B>>,IO<B>>	autoBracket(IO<A> io)
static <A extends AutoCloseable,B> IO<B>	autoBracket(IO<A> io, Fn1<? super A,? extends IO<B>> bodyIO)
IO<B>	checkedApply(IO<A> io, Fn1<? super A,? extends IO<B>> bodyIO)

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.Fn2

apply, apply, checkedApply, compose, contraMap, curried, curry, diMapL, discardR, flip, fn2, fromBiFunction, toBiFunction, uncurry, widen

Methods inherited from interface com.jnape.palatable.lambda.functions.Fn1

andThen, carry, cartesian, censor, choose, cocartesian, diMap, diMapR, discardL, flatMap, fmap, fn1, fromFunction, lazyZip, listens, local, pure, pureFn1, thunk, toFunction, trampolineM, zip, zip

Methods inherited from interface com.jnape.palatable.lambda.monad.Monad

join

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

coerce

Method Detail

checkedApply

public IO<B> checkedApply(IO<A> io,
                          Fn1<? super A,? extends IO<B>> bodyIO)

Specified by:

checkedApply in interface Fn2<IO<A extends AutoCloseable>,Fn1<? super A extends AutoCloseable,? extends IO<B>>,IO<B>>

autoBracket

public static <A extends AutoCloseable,B> AutoBracket<A,B> autoBracket()

autoBracket

public static <A extends AutoCloseable,B> Fn1<Fn1<? super A,? extends IO<B>>,IO<B>> autoBracket(IO<A> io)

autoBracket

public static <A extends AutoCloseable,B> IO<B> autoBracket(IO<A> io,
                                                            Fn1<? super A,? extends IO<B>> bodyIO)