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| <a name="start"></a><!--TODO: Bring it back to correct place once incubation logo is removed.--> |
| <h1>Eclipse <span style="font-weight: 400">Collections</span></h1> |
| <h3>- More features, less waste -</h3> |
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| <h2 class="section-heading">Get started with <br>Eclipse Collections</h2> |
| <a name="concept"></a><!--TODO: Bring it back to correct place once incubation logo is removed.--> |
| <p class="lead">Eclipse Collections is the best Java collections framework ever |
| that brings happiness to your Java development. |
| <br><br>Integrate it to your codebase today with your favorite build tools!</p> |
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| <li class="active"><a href="#maven" data-toggle="tab">Maven</a></li> |
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| <div id="dependencies" class="tab-content"> |
| <div class="tab-pane fade in active" id="maven"> |
| <pre class="prettyprint"> |
| <dependency> |
| <groupId>org.eclipse.collections</groupId> |
| <artifactId>eclipse-collections-api</artifactId> |
| <version>7.0.0</version> |
| </dependency> |
| |
| <dependency> |
| <groupId>org.eclipse.collections</groupId> |
| <artifactId>eclipse-collections</artifactId> |
| <version>7.0.0</version> |
| </dependency></pre> |
| </div> |
| <div class="tab-pane fade" id="gradle"> |
| <pre class="prettyprint"> |
| compile 'org.eclipse.collections:eclipse-collections-api:7.0.0' |
| compile 'org.eclipse.collections:eclipse-collections:7.0.0'</pre> |
| </div> |
| <div class="tab-pane fade" id="ivy"> |
| <pre class="prettyprint"> |
| <dependency org="org.eclipse.collections" name="eclipse-collections-api" rev="7.0.0" /> |
| <dependency org="org.eclipse.collections" name="eclipse-collections" rev="7.0.0" /></pre> |
| </div> |
| <div class="tab-pane fade" id="download"> |
| <pre class="prettyprint"> |
| <a href="">eclipse-collections-api-7.0.0.jar</a> |
| <a href="">eclipse-collections-7.0.0.jar</a></pre> |
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| <div class="clearfix"></div> |
| <h2 class="section-heading">Rich, Concise and Readable APIs</h2> |
| <p class="lead">Maximize the power of Java 8 Lambda expressions and method references with |
| rich APIs directly available on your collections. |
| </p> |
| </div> |
| <div class="col-lg-pull-5 col-lg-7 col-sm-pull-6 col-sm-6"> |
| <ul class="nav nav-tabs"> |
| <li class="active"><a href="#method" data-toggle="tab">Eclipse Collections w/ Method Ref</a></li> |
| <li><a href="#ec" data-toggle="tab">Eclipse Collections w/ Lambda expression</a></li> |
| <li><a href="#streams" data-toggle="tab">Java 8 Streams</a></li> |
| </ul> |
| <div id="ec-vs-streams" class="tab-content"> |
| <div class="tab-pane fade in active" id="method"> |
| <pre class="prettyprint lang-java"> |
| boolean anyPeopleHaveCats |
| = this.people |
| .anySatisfyWith(Person::hasPet, PetType.CAT); |
| |
| int countPeopleWithCats |
| = this.people |
| .countWith(Person::hasPet, PetType.CAT); |
| |
| MutableList<Person> peopleWithCats |
| = this.people |
| .selectWith(Person::hasPet, PetType.CAT)</pre> |
| </div> |
| <div class="tab-pane fade" id="ec"> |
| <pre class="prettyprint lang-java"> |
| boolean anyPeopleHaveCats |
| = this.people |
| .anySatisfy(person -> person.hasPet(PetType.CAT)); |
| |
| int countPeopleWithCats |
| = this.people |
| .count(person -> person.hasPet(PetType.CAT)); |
| |
| MutableList<Person> peopleWithCats |
| = this.people |
| .select(person -> person.hasPet(PetType.CAT));</pre> |
| </div> |
| <div class="tab-pane fade" id="streams"> |
| <pre class="prettyprint lang-java"> |
| boolean anyPeopleHaveCats |
| = this.people |
| .stream() |
| .anyMatch(person -> person.hasPet(PetType.CAT)); |
| |
| long countPeopleWithCats |
| = this.people |
| .stream() |
| .filter(person -> person.hasPet(PetType.CAT)) |
| .count(); |
| |
| List<Person> peopleWithCats |
| = this.people |
| .stream() |
| .filter(person -> person.hasPet(PetType.CAT)) |
| .collect(Collectors.toList());</pre> |
| </div> |
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| <!-- Rich and fluent API --> |
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| <hr class="section-heading-spacer"> |
| <div class="clearfix"></div> |
| <h2 class="section-heading">Many container types including <br>immutable collections, primitive collections, bimaps, multimaps and bags</h2> |
| <p class="lead">You can make use of various container types, leveraging handy factory methods for instantiation.</p> |
| </div> |
| <div class="col-lg-7 col-sm-6"> |
| <ul class="nav nav-tabs"> |
| <li class="active"><a href="#mutable" data-toggle="tab">Mutable collections</a></li> |
| <li><a href="#immutable" data-toggle="tab">Immutable collections</a></li> |
| <li><a href="#primitives" data-toggle="tab">Primitive collections</a></li> |
| </ul> |
| <div id="container-types" class="tab-content"> |
| <div class="tab-pane fade in active" id="mutable"> |
| <pre class="prettyprint lang-java"> |
| //Initializing mutable list with empty(), of(), with() method |
| MutableList<String> mutableListEmpty |
| = Lists.mutable.empty(); |
| MutableList<String> mutableListOf |
| = Lists.mutable.of("One", "One", "Two", "Three"); |
| MutableList<String> mutableListWith |
| = Lists.mutable.with("One", "One", "Two", "Three"); |
| |
| //Various container types available |
| MutableSet<String> mutableSet |
| = Sets.mutable.with("One", "One", "Two", "Three"); |
| MutableBag<<tring> mutableBag |
| = Bags.mutable.with("One", "One", "Two", "Three"); |
| MutableStack<String> mutableStack |
| = Stacks.mutable.with("One", "One", "Two", "Three"); |
| MutableMap<String, String> mutableMap |
| = Maps.mutable.with("key1", "value1", "key2", "value2", "key3", "value3"); |
| MutableMultimap<String, String> multimapWithList |
| = Multimaps.mutable.list.with("key1", "value1-1", "key1", "value1-2", "key2","value2-1");</pre> |
| </div> |
| <div class="tab-pane fade" id="immutable"> |
| <pre class="prettyprint lang-java"> |
| //Initializing immutable list with empty(), of(), with() method |
| ImmutableList<String> immutableListEmpty |
| = Lists.immutable.empty(); |
| ImmutableList<String> immutableListOf |
| = Lists.immutable.of("One", "One", "Two", "Three"); |
| ImmutableList<String> immutableListWith |
| = Lists.immutable.with("One", "One", "Two", "Three"); |
| |
| //Various container types available |
| ImmutableSet<String> immutableSet |
| = Sets.immutable.with("One", "One", "Two", "Three"); |
| ImmutableBag<String> immutableBag |
| = Bags.immutable.with("One", "One", "Two", "Three"); |
| ImmutableStack<String> immutableStack |
| = Stacks.immutable.with("One", "One", "Two", "Three"); |
| ImmutableMap<String, String> immutableMap |
| = Maps.immutable.with("key1", "value1", "key2", "value2", "key3", "value3"); |
| ImmutableMultimap<String, String> immultimapWithList |
| = Multimaps.immutable.list.with("key1", "value1-1", "key1", "value1-2", "key2","value2-1");</pre> |
| </div> |
| <div class="tab-pane fade" id="primitives"> |
| <pre class="prettyprint lang-java"> |
| //Mutable and immutable Lists, Sets, Bags, Stacks and Maps are available for all 8 primitive types |
| MutableIntList intList |
| = IntLists.mutable.of(1, 2, 3); |
| MutableLongList longList |
| = LongLists.mutable.of(1L, 2L, 3L); |
| MutableCharList charList |
| = CharLists.mutable.of('a', 'b', 'c'); |
| MutableShortList shortList |
| = ShortLists.mutable.of((short)1, (short)2, (short)3); |
| MutableByteList byteList |
| = ByteLists.mutable.of((byte)1, (byte)2, (byte)3); |
| MutableBooleanList booleanList |
| = BooleanLists.mutable.of(true, false); |
| MutableFloatList floatList |
| = FloatLists.mutable.of(1.0f, 2.0f, 3.0f); |
| MutableDoubleList doubleList |
| = DoubleLists.mutable.of(1.0, 2.0, 3.0); |
| |
| //You can created a ranged ints with IntInterval |
| IntInterval oneTo10 |
| = IntInterval.fromTo(1, 10); // ints from 1 to 10 |
| // [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] |
| IntInterval oneTo10By3 |
| = IntInterval.fromToBy(1, 10, 3); // ints from 1 to 10 step by 3 |
| // [1, 4, 7, 10] |
| IntInterval oddsFrom1To10 |
| = IntInterval.oddsFromTo(1, 10); // odd ints from 1 to 10 |
| // [1, 3, 5, 7, 9] |
| IntInterval evensFrom1To10 |
| = IntInterval.evensFromTo(1, 10); // even ints from i to 10 |
| // [2, 4, 6, 8, 10]</pre> |
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| <h2 class="section-heading">Reduce memory footprint <br>with memory efficient containers.</h2> |
| <p class="lead">Eclipse Collections provides memory efficient implementation of Sets and Maps as well as primitive collections. </p> |
| </div> |
| <div class="col-lg-pull-6 col-lg-6 col-sm-pull-6 col-sm-6"> |
| <ul class="nav nav-tabs"> |
| <li class="active"><a href="#set" data-toggle="tab">Sets</a></li> |
| <li><a href="#map" data-toggle="tab">Maps</a></li> |
| <li><a href="#ints" data-toggle="tab">Primitive Collections</a></li> |
| </ul> |
| <a name="history"></a><!--TODO: Bring it back to correct place once incubation logo is removed.--> |
| <div id="memory" class="tab-content"> |
| <div class="tab-pane fade in active" id="set"> |
| <img class="img-responsive" src="img/set.png" alt=""> |
| </div> |
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| <img class="img-responsive" src="img/map.png" alt=""> |
| </div> |
| <div class="tab-pane fade" id="ints"> |
| <img class="img-responsive" src="img/ints.png" alt=""> |
| </div> |
| </div> |
| </div> |
| </div> |
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| <!-- /.container --> |
| |
| </div> |
| <!-- Memory footprint --> |
| |
| <div class="content-section-a"> |
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| <div class="container-fluid"> |
| |
| <h2 class="section-heading">History of Eclipse Collections</h2> |
| <p class="lead"> |
| The origin of Eclipse Collections was started off as a collections framework named Caramel at Goldman Sachs in 2004. |
| |
| Since then the framework has evolved, and in 2012, it was open sourced to GitHub as a project called |
| <a href="https://github.com/goldmansachs/gs-collections">GS Collections</a>. |
| <br><br> |
| GS Collections has been presented at number of |
| <a href="https://github.com/eclipse/eclipse-collections/wiki/Conference-talks-and-meetups">conferences</a> |
| including JVM Summit in 2012 and JavaOne in 2014. |
| A performance comparison between the parallel lazy implementations of Java 8, Scala and GS Collections was presented at |
| <a href="http://www.infoq.com/presentations/java-streams-scala-parallel-collections">QCon New York</a> in 2014. |
| <br><br> |
| There are <a href="https://github.com/eclipse/eclipse-collections/wiki/Articles">articles</a> on InfoQ.com |
| showing some of the capabilities of the collections framework through examples, and also interviews to the creator of GS Collections. |
| <br><br> |
| |
| Over the years, around 40 or so developers from the same company have contributed to the collections framework. |
| |
| To maximize the best nature of open source project, GS Collections has been migrated to Eclipse Foundation, re-branded as Eclipse Collections in 2015. |
| Now the framework if fully open to the community, accepting contributions! |
| </p> |
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| <div class="col-lg-4 col-sm-4"> |
| <h3>Contribute</h3> |
| <p class="regular"> |
| We welcome contributions! |
| <br><br> |
| Eclipse Collections Project Roadmap can be found <a href="https://github.com/eclipse/eclipse-collections/wiki/Roadmap">here</a>. |
| <br><br> |
| We accept contributions via pull requests in GitHub. |
| Please see <a href="https://github.com/eclipse/eclipse-collections/blob/master/CONTRIBUTING.md">How To Contribute</a> to get started. |
| </p> |
| </div> |
| <div class="col-lg-4 col-sm-4"> |
| <h3>Latest News</h3> |
| <p class="regular">Eclipse Collections 7.0.0 released <a class="light">(Jan 20th 2016)</a></p> |
| <p class="regular">Eclipse Collections was presented at |
| <a href="http://www.java-users.jp/?page_id=2064#GH-4"> |
| JJUG CCC 2015 Fall |
| </a> |
| <a class="light">(Nov 28th 2015)</a> |
| </p> |
| <p class="regular">Eclipse Collections was presented at |
| <a href="https://www.eclipsecon.org/europe2015/session/eclipse-collections-example"> |
| EclipseCon Europ 2015 |
| </a> |
| <a class="light">(Nov 5th 2015)</a> |
| </p> |
| <p class="regular">Eclipse Collections was presented at |
| <a href="https://events.rainfocus.com/oow15/catalog/oracle.jsp?event=javaone&search=CON1091&search.event=javaoneEvent&search.day=20151029"> |
| JavaOne 2015 San Francisco |
| </a> |
| <a class="light">(Oct 28th 2015)</a> |
| </p> |
| </div> |
| <div class="col-lg-4 col-sm-4"> |
| <h3>Community Links</h3> |
| <p class="regular">Eclipse PME: <a href="https://projects.eclipse.org/projects/technology.collections">eclipse project management infrastructure</a></p> |
| <p class="regular">GitHub: <a href="https://github.com/eclipse/eclipse-collections">eclipse-collections</a></p> |
| <p class="regular">Issues: <a href="https://github.com/eclipse/eclipse-collections/issues">GitHub issues</a></p> |
| <p class="regular">Mailing lists: <a href="https://dev.eclipse.org/mailman/listinfo/collections-dev">collections-dev</a> mailing list</p> |
| <p class="regular">Wiki: <a href="https://github.com/eclipse/eclipse-collections/wiki">GitHub wiki</a></p> |
| <p class="regular">Forum: <a href="https://www.eclipse.org/forums/index.php?t=thread&frm_id=329">Eclipse Collections Forum</a></p> |
| <p class="regular">StackOverflow: tag with <a href="http://stackoverflow.com/questions/tagged/eclipse-collections">eclipse-collections</a></p> |
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