fj.data.fingertrees

Class Two<V,A>

java.lang.Object

fj.data.fingertrees.Digit<V,A>

fj.data.fingertrees.Two<V,A>

public final class Two<V,A>
extends Digit<V,A>

A two-element prefix or suffix of a finger tree.

Method Summary

Methods

Modifier and Type	Method and Description
<B> B	foldLeft(F<B,F<A,B>> bff, B z) Folds this digit to the left using the given function and the given initial value.
<B> B	foldRight(F<A,F<B,B>> aff, B z) Folds this digit to the right using the given function and the given initial value.
<B> B	match(F<One<V,A>,B> one, F<Two<V,A>,B> two, F<Three<V,A>,B> three, F<Four<V,A>,B> four) Structural pattern matching on digits.
V2<A>	values() Returns the elements of this digit as a vector.

Methods inherited from class fj.data.fingertrees.Digit

map, measure, reduceLeft, reduceRight, toTree

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

foldRight

public <B> B foldRight(F<A,F<B,B>> aff,
              B z)

Description copied from class: Digit

Folds this digit to the right using the given function and the given initial value.

Specified by:

foldRight in class Digit<V,A>

Parameters:

aff - A function with which to fold this digit.

z - An initial value to apply at the rightmost end of the fold.

Returns:

The right reduction of this digit with the given function and the given initial value.

foldLeft

public <B> B foldLeft(F<B,F<A,B>> bff,
             B z)

Description copied from class: Digit

Folds this digit to the left using the given function and the given initial value.

Specified by:

foldLeft in class Digit<V,A>

Parameters:

bff - A function with which to fold this digit.

z - An initial value to apply at the leftmost end of the fold.

Returns:

The left reduction of this digit with the given function and the given initial value.

match

public <B> B match(F<One<V,A>,B> one,
          F<Two<V,A>,B> two,
          F<Three<V,A>,B> three,
          F<Four<V,A>,B> four)

Description copied from class: Digit

Structural pattern matching on digits. Applies the function that matches the structure of this digit.

Specified by:

match in class Digit<V,A>

Parameters:

one - A function to apply to this digit if it's One.

two - A function to apply to this digit if it's Two.

three - A function to apply to this digit if it's Three.

four - A function to apply to this digit if it's Four.

Returns:

The result of applying the function matching this Digit.

values

public V2<A> values()

Returns the elements of this digit as a vector.

Returns:

the elements of this digit as a vector.