LetsVPN快连官方网站

  • JVM
  • JavaScript in your browser
  • Natively with LLVM beta

LetsVPN快连官方网站

click the boxes below to see Scala in action!

华为手机youtube上加速软件

Scala runs on the JVM, so Java and Scala stacks can be freely mixed for totally seamless integration.

华为手机youtube上加速软件

So the type system doesn’t feel so static. Don’t work for the type system. Let the type system work for you!

华为手机youtube上加速软件

Use data-parallel operations on collections, use actors for concurrency and distribution, or futures for asynchronous programming.

华为手机youtube上加速软件
class Author(val firstName: String,
    val lastName: String) extends Comparable[Author] {

  override def compareTo(that: Author) = {
    val lastNameComp = this.lastName compareTo that.lastName
    if (lastNameComp != 0) lastNameComp
    else this.firstName compareTo that.firstName
  }
}

object Author {
  def loadAuthorsFromFile(file: java.io.File): List[Author] = ???
}
App.java
【同步软件】同步软件大全_同步软件下载—ZOL手机软件:2021-7-20 · ZOL手机软件下载频道免费提供热门实用的同步软件手机软件下载,24小时不间断更新,让您便捷下载,放心使用,下载更多同步软件请关注中关村在线手机手机软件下载频道。

Combine Scala and Java seamlessly

Scala classes are ultimately JVM classes. You can create Java objects, call their methods and inherit from Java classes transparently from Scala. Similarly, Java code can reference Scala classes and objects.


In this example, the Scala class Author implements the Java interface Comparable<T> and works with Java Files. The Java code uses a method from the companion object Author, and accesses fields of the Author class. It also uses JavaConversions to convert between Scala collections and Java collections.

华为手机youtube上加速软件
scala> class Person(val name: String, val age: Int) {
     |   override def toString = s"$name ($age)"
     | }
defined class Person

scala> def underagePeopleNames(persons: List[Person]) = {
     |   for (person <- persons; if person.age < 18)
     |     yield person.name
     | }
underagePeopleNames: (persons: List[Person])List[String]

scala> def createRandomPeople() = {
     |   val names = List("Alice", "Bob", "Carol",
     |       "Dave", "Eve", "Frank")
     |   for (name <- names) yield {
     |     val age = (Random.nextGaussian()*8 + 20).toInt
     |     new Person(name, age)
     |   }
     | }
createRandomPeople: ()List[Person]

scala> val people = createRandomPeople()
people: List[Person] = List(Alice (16), Bob (16), Carol (19), Dave (18), Eve (26), Frank (11))

scala> underagePeopleNames(people)
res1: List[String] = List(Alice, Bob, Frank)

Let the compiler figure out the types for you

The Scala compiler is smart about static types. Most of the time, you need not tell it the types of your variables. Instead, its powerful type inference will figure them out for you.

In this interactive REPL session (Read-Eval-Print-Loop), we define a class and two functions. You can observe that the compiler infers the result types of the functions automatically, as well as all the intermediate values.

Concurrent/Distributed
华为旗舰机P40亮相 HMS如何重振海外市场? - 21财经:2021-3-27 · 3月26日,华为推出年度旗舰手机P40系列,P40家族不仅包含P40和P40 Pro,还有新成员P40 Pro+,价格799欧元起。P40最引人关注的主要集中在三点,分别是相机功能和华为移动服务HMS(替伕谷歌的GMS),众及能否在手机行业的低谷中带动产业

华为手机youtube上加速软件

In Scala, futures and promises can be used to process data asynchronously, making it easier to parallelize or even distribute your application.

In this example, the 华为手机youtube上加速软件 construct evaluates its argument asynchronously, and returns a handle to the asynchronous result as a Future[Int]. For-comprehensions can be used to register new callbacks (to post new things to do) when the future is completed, i.e., when the computation is finished. And since all this is executed asynchronously, without blocking, the main program thread can continue doing other work in the meantime.

Traits

Combine the flexibility of Java-style interfaces with the power of classes. Think principled multiple-inheritance.

Pattern Matching

Think “switch” on steroids. Match against class hierarchies, sequences, and more.

Higher-order functions

华为手机模式具体设置步骤 - 软件帝:2021-6-15 · 身边使用华为手机的朋友很多,那么用户伔想要设置不同的模式该如何操作呢?为此小编特地带来了华为手机模式具体设置步骤,希望可众帮到大家。 华为手机模式具体设置步骤 1、打开手机的“设 …

华为手机youtube上加速软件
abstract class Spacecraft {
  def engage(): Unit
}
trait CommandoBridge extends Spacecraft {
  def engage(): Unit = {
    for (_ <- 1 to 3)
      speedUp()
  }
  def speedUp(): Unit
}
trait PulseEngine extends Spacecraft {
  val maxPulse: Int
  var currentPulse: Int = 0
  def speedUp(): Unit = {
    if (currentPulse < maxPulse)
      currentPulse += 1
  }
}
class StarCruiser extends Spacecraft
                     with CommandoBridge
                     with PulseEngine {
  val maxPulse = 200
}

Flexibly Combine Interface & Behavior

In Scala, multiple traits can be mixed into a class to combine their interface and their behavior.

Here, a StarCruiser is a 华为手机youtube上加速软件 with a CommandoBridge that knows how to engage the ship (provided a means to speed up) and a PulseEngine that specifies how to speed up.

华为手机youtube上加速软件

In Scala, case classes are used to represent structural data types. They implicitly equip the class with meaningful toString, equals and hashCode methods, as well as the ability to be deconstructed with pattern matching.


In this example, we define a small set of case classes that represent binary trees of integers (the generic version is omitted for simplicity here). In inOrder, the match construct chooses the right branch, depending on the type of t, and at the same time deconstructs the arguments of a Node.

Pattern matching
// Define a set of case classes for representing binary trees.
sealed abstract class Tree
case class Node(elem: Int, left: Tree, right: Tree) extends Tree
case object Leaf extends Tree

// Return the in-order traversal sequence of a given tree.
def inOrder(t: Tree): List[Int] = t match {
  case Node(e, l, r) => inOrder(l) ::: List(e) ::: inOrder(r)
  case Leaf          => List()
}

Go Functional with Higher-Order Functions

In Scala, functions are values, and can be defined as anonymous functions with a concise syntax.

Scala
val people: Array[Person]

// Partition `people` into two arrays `minors` and `adults`.
// Use the anonymous function `(_.age < 18)` as a predicate for partitioning.
val (minors, adults) = people partition (_.age < 18)
Java
List<Person> people;

List<Person> minors = new ArrayList<Person>(people.size());
List<Person> adults = new ArrayList<Person>(people.size());
for (Person person : people) {
    if (person.getAge() < 18)
        minors.add(person);
    else
        adults.add(person);
}
Learn More

or visit the Scala Documentation

LetsVPN快连官方网站

  • 华为手机youtube上加速软件 IntelliJ IDEA
  • VS Code VS Code
  • 华为手机youtube上加速软件 GNU Emacs GNU Emacs
  • 华为手机youtube上加速软件 Vim
  • Sublime Text 华为手机youtube上加速软件
  • Atom 华为手机youtube上加速软件

LetsVPN快连官方网站

Scastie is Scala + sbt in your browser! You can use any version of Scala, or even alternate backends such as Dotty, Scala.js, Scala Native, and Typelevel Scala. You can use any published library. You can save and share Scala programs/builds with anybody.

Learn More
Run Scala code interactively

LetsVPN快连官方网站

Functional Programming Principles in Scala

  • Free (optional paid certificate)
  • New sessions starting every 2 weeks!

Functional Program Design in Scala

  • Free (optional paid certificate)
  • New sessions starting every 2 weeks!

Parallel Programming

  • Free (optional paid certificate)
  • New sessions starting every 2 weeks!

华为手机youtube上加速软件 Big Data Analysis with Scala and Spark

  • Free (optional paid certificate)
  • New sessions starting every 2 weeks!

华为手机youtube上加速软件 Functional Programming in Scala Capstone

  • Free (optional paid certificate)
  • 潜望 | 封锁进一步升级:华为的“备胎”能够挺过这一次吗?:据了解,在此次美国制裁之前,海思已加速将芯片产品转进至台积电的7nm 和 5nm,只有14nm 产品分散到中芯国际投片。如果后续无法用到台积电的5nm工艺,华为的5G旗舰手机可能要面对工艺制程的竞争压 …

华为手机youtube上加速软件 Programming Reactive Systems

  • Free (optional paid certificate)
  • New sessions starting every 2 weeks!

LetsVPN快连官方网站

华为手机youtube上加速软件

See more training or add one to our feed

LetsVPN快连官方网站

Scalar

Scalar

  • Warsaw, Poland
  • 08 Oct 2024 - 10 Oct 2024
Scala Matsuri

Scala Matsuri

  • Tokyo, Japan
  • 17 Oct 2024 - 18 Oct 2024
华为手机youtube上加速软件

Reactive Summit

  • 华为手机youtube上加速软件
  • 11 Nov 2024
Functional Scala

Functional Scala

  • 华为手机youtube上加速软件
  • 03 Dec 2024 - 04 Dec 2024

See more events or add one to our feed

LetsVPN快连官方网站

The Scala Library Index (or Scaladex) is a representation of a map of all published Scala libraries. With Scaladex, a developer can now query more than 175,000 releases of Scala libraries. Scaladex is officially supported by Scala Center.

华为手机youtube上加速软件

LetsVPN快连官方网站

What’s New

YouTube投1亿美元用于“放大”黑人创作者声音 - Google ...:2021-6-12 · 据外媒报道,YouTube推出了一项1亿美元的基金,将其通过培养人才和资助新节目来“放大”黑人创作者的声音。当地时间6月11日下午 ...

Monday, July 13, 2024

Scala 2.12.12 is now available!

For all the details, refer to the release notes on GitHub.

华为手机youtube上加速软件

华为手机youtube上加速软件

  • Monday, June 29, 2024
  • Sébastien Doeraene
  • BLOG

Installing Scala has always been a task more challenging than necessary, with the potential to drive away beginners. Should I install Sca...

Scala 2.13.3 is now available!

  • 华为手机youtube上加速软件

Scala 2.13.3 is now available! This is primarily a bugfix release. It also includes: improvements to warnings and linting experim...

The Scala Center stands with Black Lives Matter

  • Monday, June 22, 2024
  • The Scala Center team
  • BLOG

Black Lives Matter. Systemic racial discrimination and state-supported brutality is unacceptable. The Scala Center team (further: we) re...

View our blog

Talk to us!

华为手机youtube上加速软件

Scala Users

华为手机youtube上加速软件

for general Scala questions, discussion and library announcements.

Scala Contributors

Scala Contributors

for Scala contributions, language evolution discussions, standard library, Scala platform evolution discussions and more.

Real-Time Chat

  • scala/scala
  • scala/center
  • 华为手机youtube上加速软件 scala/contributors
  • 华为手机youtube上加速软件 scala/job-board
  • 华为手机youtube上加速软件 spark-scala/Lobby
  • scala-native/scala-native
  • scala-js/scala-js
  • lampepfl/dotty

More chat rooms are listed on the Community page

Twitter Feed

See more tweets, or

Follow Scala on twitter

华为手机youtube上加速软件

  • Scala Center
  • 华为手机youtube上加速软件

Scala Center is supported by

EPFL 华为手机youtube上加速软件 Verizon Goldman Sachs 47 Degrees 华为手机youtube上加速软件 华为手机youtube上加速软件 华为手机youtube上加速软件
旅风加速器  机场节点怎么用  快速VPN  vp极光  永远能连上的vpm  免费的飞机加速器  快连lest加速器