ixjava

by akarnokd

akarnokd / ixjava

Iterable Extensions for Java 6+

210 Stars 7 Forks Last release: about 3 years ago (1.0.0) Apache License 2.0 98 Commits 14 Releases

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ixjava

codecov.io Maven Central

Iterable Extensions for Java, the dual of RxJava. Originally implemented in the Reactive4Java framework, now standalone; no dependencies on any reactive library.

The aim is to provide, lazily evaluated, pull-based datastream support with the same naming as in RxJava mainly for the pre-Java-8 world. The Stream API in Java 8 is not exactly the same thing because Streams can be only consumed once while

Iterable
s can be consumed many times. Google Guava features a lot of Iterable operators, plus now they have the
FluentIterable
with similar setup but far less operators available.

This branch starts from scratch by reimplementing

ix.Ix
and all of its operators based on the +5 year experience with reactive and interactive dataflows.

Releases

Javadoc: https://akarnokd.github.com/ixjava/javadoc/index.html

gradle

dependencies {
    implementation 'com.github.akarnokd:ixjava:1.0.0'
}

Maven search:

http://search.maven.org

Examples

The main (and only) entry point is the class

ix.Ix
which features a bunch of static factory methods:
List list = Arrays.asList(1, 2, 3, 4, 5);

Ix seq = Ix.from(list);

Now we can apply instance methods on the

seq
sequence, just like in RxJava. Not all operators are available though due to the synchronous-pull nature of IxJava.
seq
.map(v -> v + 1)
.filter(v -> v % 2 == 0)
.flatMap(v -> Ix.fromArray(v * 10, v * 100)))
.subscribe(System.out::println)
;

Since

Ix
implements
Iterable
, you can use the for-each loop to consume it:
for (Integer v : Ix.fromArray(5, 10).skip(1).concatWith(Ix.just(20))) {
    System.out.println("Value: " + v);
}

For further details on the possibilities, please study the javadoc of

Ix
.

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