Guava Integration

Getting cyclops-guava

• 

Gradle

where x.y.z represents the latest version

compile 'com.aol.cyclops:cyclops-guava:x.y.z'

Maven

<dependency>
    <groupId>com.aol.cyclops</groupId>
    <artifactId>cyclops-guava</artifactId>
    <version>x.y.z</version>
</dependency>

cyclops-guava features include

1. Native for comprehensions for Guava FluentIterable and Optional types
2. Monad wrapping via AnyM / AnyMValue / AnyMSeq
3. Compatible with cyclops-react pattern matching
4. Ability to use Observables inside cyclops-react monad transformers (as the wrapping type, requires conversion to act as the nested type).

Features

Currently requires Guava 19.0 or above

Use Guava. to create wrapped Guava Monads.

Examples

Optional in a for comprehension

Optional<Integer> optional = Guava.ForOptional.each2(Optional.of(10), a->Optional.absent(), (a,b)->"failed")
//Optional.absent

FluentIterable in a for comphrension

Guava.ForFluentIterable.each2(FluentIterable.from(ListX.of(1,2,3)),
												a->FluentIterable.<Integer>from(ListX.of(a+10)), 
												Tuple::tuple).toString()

//[(1, 11), (2, 12), (3, 13)]

Subscribe to a Guava FluentIterable

import static com.aol.cyclops.javaslang.guava.fluentIterable;

SeqSubscriber<Integer> subscriber =SeqSubscriber.subscriber();
		
FluentIterable<Integer> stream = FluentIterable.from(Arrays.asList(1,2,3));
		
fluentIterable(stream).subscribe(subscriber);
		
subscriber.stream()
	 	  .forEachWithError(System.out::println, System.err::println);

Pacakage com.aol.cyclops.guava contains converters for types from various functional libraries for Java

• JDK
• Javaslang
• Functional Java
• jooλ
• simple-react

Supported Guava Monads include

• FluentIterable
• Optional

These are available in Cyclops Comprehensions, or via Cyclops AnyM.