Package com.jnape.palatable.lambda.monoid.builtin

Class Concat<A>

java.lang.Object

com.jnape.palatable.lambda.monoid.builtin.Concat<A>

All Implemented Interfaces:

Fn1<Iterable<A>,Fn1<Iterable<A>,Iterable<A>>>, Fn2<Iterable<A>,Iterable<A>,Iterable<A>>, Applicative<Fn1<Iterable<A>,Iterable<A>>,Fn1<Iterable<A>,?>>, Cartesian<Iterable<A>,Fn1<Iterable<A>,Iterable<A>>,Fn1<?,?>>, Cocartesian<Iterable<A>,Fn1<Iterable<A>,Iterable<A>>,Fn1<?,?>>, Contravariant<Iterable<A>,Profunctor<?,Fn1<Iterable<A>,Iterable<A>>,Fn1<?,?>>>, Functor<Fn1<Iterable<A>,Iterable<A>>,Fn1<Iterable<A>,?>>, Profunctor<Iterable<A>,Fn1<Iterable<A>,Iterable<A>>,Fn1<?,?>>, Monad<Fn1<Iterable<A>,Iterable<A>>,Fn1<Iterable<A>,?>>, MonadReader<Iterable<A>,Fn1<Iterable<A>,Iterable<A>>,Fn1<Iterable<A>,?>>, MonadRec<Fn1<Iterable<A>,Iterable<A>>,Fn1<Iterable<A>,?>>, MonadWriter<Iterable<A>,Fn1<Iterable<A>,Iterable<A>>,Fn1<Iterable<A>,?>>, Monoid<Iterable<A>>, Semigroup<Iterable<A>>

public final class Concat<A>
extends Object
implements Monoid<Iterable<A>>

The Monoid instance formed under concatenation for an arbitrary Iterable.

See Also:

• Monoid

Field Summary

Fields

Modifier and Type	Field	Description
private static final Concat<?>	INSTANCE

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Concat()

Method Summary

Modifier and Type	Method	Description
Iterable<A>	checkedApply(Iterable<A> xs, Iterable<A> ys)
static <A> Concat<A>	concat()
static <A> Fn1<Iterable<A>,Iterable<A>>	concat(Iterable<A> xs)
static <A> Iterable<A>	concat(Iterable<A> xs, Iterable<A> ys)
<B> Iterable<A>	foldMap(Fn1<? super B,? extends Iterable<A>> fn, Iterable<B> bs)	Homomorphism combined with catamorphism.
Iterable<A>	identity()	The identity element of this monoid.

Methods inherited from class java.lang.Object

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

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

Methods inherited from interface com.jnape.palatable.lambda.functions.Fn2

apply, apply, checkedApply, compose, contraMap, diMapL, discardR, toBiFunction, uncurry, widen

Methods inherited from interface com.jnape.palatable.lambda.functor.Functor

coerce

Methods inherited from interface com.jnape.palatable.lambda.monoid.Monoid

flip, foldLeft, foldRight, reduceLeft, reduceRight

Field Details

INSTANCE

private static final Concat<?> INSTANCE

Constructor Details

Concat

private Concat()

Method Details

identity

public Iterable<A> identity()

Description copied from interface: Monoid

The identity element of this monoid.

Specified by:

identity in interface Monoid<A>

Returns:

the identity

checkedApply

public Iterable<A> checkedApply(Iterable<A> xs,
 Iterable<A> ys)

Specified by:

checkedApply in interface Fn2<Iterable<A>,Iterable<A>,Iterable<A>>

foldMap

public <B> Iterable<A> foldMap(Fn1<? super B,? extends Iterable<A>> fn,
 Iterable<B> bs)

Description copied from interface: Monoid

Homomorphism combined with catamorphism. Convert an Iterable<B> to an Iterable<A> (that is, an Iterable of elements this monoid is formed over), then reduce the result from left to right. Under algebraic data types, this is isomorphic to a flatMap.

Specified by:

foldMap in interface Monoid<A>

Type Parameters:

B - the input Iterable element type

Parameters:

fn - the mapping function from A to B

bs - the Iterable of Bs

Returns:

the folded result under this Monoid

See Also:

• Map
• Monoid.reduceLeft(Iterable)

concat

public static <A> Concat<A> concat()

concat

public static <A> Fn1<Iterable<A>,Iterable<A>> concat(Iterable<A> xs)

concat

public static <A> Iterable<A> concat(Iterable<A> xs,
 Iterable<A> ys)