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AsScala [ A ] @deprecated ( "Don't access these decorators directly." , … 2019-02-16 scalaj-collection. A library for converting between Java and Scala collections. Usage. Turn any Scala collection into the corresponding Java collection: 2020-06-22 // Conversion decorator classes /** Generic class containing the `asJava` converter method */ class AsJava (op: => C) {/** Converts a Scala collection to the corresponding Java collection */ def asJava: C = op} /** Generic class containing the `asScala` converter method */ class AsScala (op: => C) {/** Converts a Java collection to the corresponding Scala collection */ def asScala: C = op Scala 2 compiler and standard library. For bugs, see scala/bug - scala/scala 2016-02-15 The .asJava extension method will convert a Scala function to the most specific corresponding Java functional interface.

The “Route” is the central concept of Akka HTTP’s Routing DSL. All the structures you build with the DSL, no matter whether they consists of a single line or span several hundred lines, are type function turning a RequestContext RequestContext into a Future[RouteResult] CompletionStage. kafka-serialization-jsoniter-scala: provides serializer and deserializer based on Jsoniter Scala The Avro4s serialization support the schema evolution through the schema registry. The consumer can provide its own schema and Avro will take care of the conversion. Conversions Between Java and Scala Collections. Language. English.

There are many similarities between the two. For instance, both libraries know iterators, iterables, sets, maps, and sequences. Conversions Between Java and Scala Collections Like Scala, Java also has a rich collections library.

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Sometimes you might need to pass from one collection framework to the other. For instance, you might want to access an existing Java collection as if it were a Scala collection. Scala Standard Library 2.13.0 - scala.collection.JavaConverters.AsJava. This is the documentation for the Scala standard library.

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When you need to pass a collection into a Java method: import scala.collection.JavaConverters._ val scalaList = List(1, 2, 3) JavaLibrary.process(scalaList.asJava) If the Java code returns a Java collection, you can turn it into a Scala collection in a similar manner: Java - Scala tags/keywords. asjava, asjava, asjavacollection, asjavadictionary, asjavaenumeration, asscala, asscala, b, b, c, iterable, iterator, use, use Since scala 2.8.1 use JavaConverters._ to convert scala and Java collections using asScala and asJava methods. The Scala JavaConverters object lets you perform conversions in a manner similar to the examples shown, though they don’t offer implicit conversions. Instead they require you to explicitly call asJava or asScala methods to perform the conversions. Be careful, because the object also contains many deprecated methods. * Handles scala-java conversions. * * @param streamsToMonitor the set of system streams for which the metadata is needed.

Not sure why this hasn't been mentioned before but I think the most intuitive way is to invoke the asJava decorator method of JavaConverters directly on the Scala list: scala> val scalaList = List(1,2,3) scalaList: List[Int] = List(1, 2, 3) scala> import scala.collection.JavaConverters._ import scala.collection.JavaConverters._ scala> scalaList.asJava res11: java.util.List[Int] = [1, 2, 3] Scala is part of the Java Virtual Machine ecosystem. Therefore, any non-green field project will probably interact with Java libraries. Besides, those interactions might require us to either pass Java collections as parameters, receive them as return values, or most likely both.
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Please note that we call asJava to convert scala list to java. The reason being all yarn API take Java collections. Now you may be wondering, how yarn will get the code which contains this main class to launch. That’s the next step.

Java DSL: Adapt an existing ScalaDSL Route NoSuchMethodError: scala.collection.JavaConverters.seqAsJavaListConverter( Lscala/collection/Seq;)Lscala/collection/convert/Decorators$AsJava; Then you can call the asJava method to convert any sequence (such as a Scala buffer) into a Java list.” Page 44 [2]: Change import scala.collection. It is quite easy to do this, because Scala offers implicit conversions between all the Java collections by way of extension methods called asScala and asJava :. Scala has a high-performance, object-oriented, and type-parameterized collections framework just as Java does.
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Conversions Between Java and Scala Collections. Language. English. 中文 (简体) Like Scala, Java also has a rich collections library. There are many similarities between the two. For instance, both libraries know iterators, iterables, sets, maps, and sequences. But there are also important differences.

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Junior utvecklare med intresse för Scala. Gothenburg, Västra Götaland Konfidentiell. I din roll kommer du att utveckla Microservices samt arkitektur med hjälp av We use technologies such as Java, Go, MySQL, Cassandra, Memcached, Kafka, Elasticsearch, gRPC, C++, React/Redux, Kafka, Scala, Java and Python. You will develop in Javascript, Scala, Java, PHP and SQL. in one or more development languages, such as Java, Python, Javascript, Go, PHP or similar Have Practical Scala DSLs : Real-World Applications Using Domain Specific Lan. Java: Java 7 Focuses especially on up-and-coming technologies such as Java FX Formerly was known as java virtual machine (jvm), the program other languages can run on the java virtual machine like scala, kotlin, groovy, You are passionate about high quality code development in Java, Scala and Python… years in engineering/development with at least 3 of those years as Java Managed languages, such as Java, JavaScript and Haskell, enable better and especially its long, winding and narrow scala tympani (ST .

_ import scala.compat.java8.FunctionConverters._ val foo: Int => Boolean = i => i > 7 def testBig(ip: IntPredicate) = ip.test(9) println(testBig(foo.asJava)) // Prints 2020年2月1日 1 2. java.util.Map javaMap = scala.collection.JavaConverters .