我们的目标是教授FP,但我们将使用Scala作为载体,因此需要对Scala有足够的了解。在了解Scala的一些基础知识后,我们将介绍编写函数式程序的一些基本技巧。我们将讨论如何使用尾递归函数编写loop,并且我们还会介绍高阶函数。高阶函数是将其他函数作为参数的函数,并且可能会将函数作为返回值输出。我们还会看一些多态高阶函数的...
1.1 Understanding the benefits of functional programming 让我们看个例子展示下使用纯函数编程的好处。目的只是为了阐述一些我们会贯穿全书的基本思想。这也会是你第一次接触Scala语法。我们会在下一章中更深入地讨论Scala语法,所以不要担心跟不上。本章的目标仅仅是对代码在干啥有个基本了解。 1.1.1 A program w...
Paul Chiusano and Rúnar Bjarnason are recognized experts in functional programming with Scala. Each has been writing Scala and using FP professionally for several years. Paul is a Scalaz contributor, blogs and speaks regularly on Scala and FP. Rúnar is a principal contributor to Scalaz and the...
Functional Programming in C# leads you along a path that begins with the historic value of functional ideas. Inside, C# MVP and functional programming expert OliSturm, Oliverdoi:10.1007/978-1-4842-0232-6_4Vishal LaykaDavid PollakAcm Sigplan Notices...
你会注意到这种用法和 Scala 标准库非常相像， 它大致相当于 Scala 的 myList.filter(isNotX _).fil...
Programming Scala - Functional Programming in Scala 阅读更多 Transform List(1, 2, 3, 4, 5) map { _ * 2 } Reduce List(1, 2, 3, 4, 5) reduceLeft { _ * _ } The first _ represents the argument that is accumulating the value of the reduction, and the second _ represents the ...
在Scala中,Functional Reactive Programming(FRP)通常通过使用第三方库来实现。其中最常用的库是Scala.React和RxScala。 Scala.React是一个基于Scala的FRP库,它提供了一套API来创建响应式的程序。用户可以定义包含事件和信号的数据流,并通过使用高阶函数和操作符来处理这些数据流。Scala.React还提供了一种反应式编程的...
Functional programming using ScalaIn the functional programming paradigm, functions become the primary tool for modeling solutions to a problem. In the simplest form, we can think of a function as something that accepts one or more input and produces an output. ...
Currying converts a function with multiple parameters creating a chain of function, each expecting a single parameter. scala> val add = (x: Int, y: Int) => x +y add: (Int, Int)=> Int = <function2># curried functions scala> defadd(x: Int)(y: Int) = x +yadd: (x: Int)(y...
If you’ve had trouble trying to learn Functional Programming (FP), you’re not alone. In this book, Alvin Alexander — author of the Scala Cookbook and former teacher of Java and Object-Oriented Programming (OOP) classes — writes about his own problems in trying to understand FP, and ...