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Functional patterns for Java

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

import com.jnape.palatable.lambda.functions.Fn1;
import com.jnape.palatable.lambda.functions.Fn2;

import java.util.function.Function;

/**
 * Eagerly apply a predicate to each element in an Iterable, returning true if every element
 * satisfies the predicate, and false otherwise. This method short-circuits on the first false
 * evaluation.
 *
 * @param  The input Iterable element type
 * @see Any
 */
public final class All implements Fn2, Iterable, Boolean> {

    private All() {
    }

    @Override
    public Boolean apply(Function predicate, Iterable as) {
        for (A a : as)
            if (!predicate.apply(a))
                return false;

        return true;
    }

    public static  All all() {
        return new All<>();
    }

    public static  Fn1, Boolean> all(Function predicate) {
        return All.all().apply(predicate);
    }

    public static  Boolean all(Function predicate, Iterable as) {
        return All.all(predicate).apply(as);
    }
}