Mercurial > hg > Members > tatsuki > functionaljava-master > core
view src/main/java/fj/data/fingertrees/Four.java @ 0:fe80c1edf1be
add getLoop
author | tatsuki |
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date | Fri, 20 Mar 2015 21:04:03 +0900 |
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package fj.data.fingertrees; import fj.data.vector.V4; import fj.F; /** * A four-element prefix or suffix of a finger tree. */ public final class Four<V, A> extends Digit<V, A> { private final V4<A> as; Four(final Measured<V, A> m, final V4<A> as) { super(m); this.as = as; } public <B> B foldRight(final F<A, F<B, B>> aff, final B z) { return aff.f(as._1()).f(aff.f(as._2()).f(aff.f(as._3()).f(aff.f(as._4()).f(z)))); } public <B> B foldLeft(final F<B, F<A, B>> bff, final B z) { return as.toStream().foldLeft(bff, z); } @Override public <B> B match( final F<One<V, A>, B> one, final F<Two<V, A>, B> two, final F<Three<V, A>, B> three, final F<Four<V, A>, B> four) { return four.f(this); } /** * Returns the elements of this digit as a vector. * * @return the elements of this digit as a vector. */ public V4<A> values() { return as; } }