Class Find<A>
- java.lang.Object
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- com.jnape.palatable.lambda.functions.builtin.fn2.Find<A>
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- Type Parameters:
A
- the Iterable element type
- All Implemented Interfaces:
Fn1<Fn1<? super A,? extends java.lang.Boolean>,Fn1<java.lang.Iterable<A>,Maybe<A>>>
,Fn2<Fn1<? super A,? extends java.lang.Boolean>,java.lang.Iterable<A>,Maybe<A>>
,Applicative<Fn1<java.lang.Iterable<A>,Maybe<A>>,Fn1<Fn1<? super A,? extends java.lang.Boolean>,?>>
,Cartesian<Fn1<? super A,? extends java.lang.Boolean>,Fn1<java.lang.Iterable<A>,Maybe<A>>,Fn1<?,?>>
,Cocartesian<Fn1<? super A,? extends java.lang.Boolean>,Fn1<java.lang.Iterable<A>,Maybe<A>>,Fn1<?,?>>
,Contravariant<Fn1<? super A,? extends java.lang.Boolean>,Profunctor<?,Fn1<java.lang.Iterable<A>,Maybe<A>>,Fn1<?,?>>>
,Functor<Fn1<java.lang.Iterable<A>,Maybe<A>>,Fn1<Fn1<? super A,? extends java.lang.Boolean>,?>>
,Profunctor<Fn1<? super A,? extends java.lang.Boolean>,Fn1<java.lang.Iterable<A>,Maybe<A>>,Fn1<?,?>>
,Monad<Fn1<java.lang.Iterable<A>,Maybe<A>>,Fn1<Fn1<? super A,? extends java.lang.Boolean>,?>>
,MonadReader<Fn1<? super A,? extends java.lang.Boolean>,Fn1<java.lang.Iterable<A>,Maybe<A>>,Fn1<Fn1<? super A,? extends java.lang.Boolean>,?>>
,MonadRec<Fn1<java.lang.Iterable<A>,Maybe<A>>,Fn1<Fn1<? super A,? extends java.lang.Boolean>,?>>
,MonadWriter<Fn1<? super A,? extends java.lang.Boolean>,Fn1<java.lang.Iterable<A>,Maybe<A>>,Fn1<Fn1<? super A,? extends java.lang.Boolean>,?>>
public final class Find<A> extends java.lang.Object implements Fn2<Fn1<? super A,? extends java.lang.Boolean>,java.lang.Iterable<A>,Maybe<A>>
Iterate the elements in anIterable
, applying a predicate to each one, returning the first element that matches the predicate, wrapped in aMaybe
. If no elements match the predicate, the result isMaybe.nothing()
. This function short-circuits, and so is safe to use on potentially infiniteIterable
instances that guarantee to have an eventually matching element.
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Constructor Summary
Constructors Modifier Constructor Description private
Find()
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description Maybe<A>
checkedApply(Fn1<? super A,? extends java.lang.Boolean> predicate, java.lang.Iterable<A> as)
static <A> Find<A>
find()
static <A> Fn1<java.lang.Iterable<A>,Maybe<A>>
find(Fn1<? super A,? extends java.lang.Boolean> predicate)
static <A> Maybe<A>
find(Fn1<? super A,? extends java.lang.Boolean> predicate, java.lang.Iterable<A> as)
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface com.jnape.palatable.lambda.functions.Fn1
andThen, carry, cartesian, censor, choose, cocartesian, diMap, diMapR, discardL, flatMap, fmap, lazyZip, listens, local, pure, self, thunk, toFunction, trampolineM, zip, zip
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Field Detail
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INSTANCE
private static final Find<?> INSTANCE
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