Fix.java

package shahn.test;

import java.util.function.BiFunction;
import java.util.function.Function;

public class Fix<X, Y> {
	
	Function<X, Y> result;

	public static <A, B> Function<A, B> fix(BiFunction<Function<A, B>, A, B> f) {
		Fix<A, B> fix = new Fix<>();
		fix.result = (a) -> {
			return f.apply(fix.result, a);
		};
		return fix.result;
	}

}