WebScala Lists - Scala Lists are quite similar to arrays which means, all the elements of a list have the same type but there are two important differences. First, lists are immutable, which means elements of a list cannot be changed by assignment. ... You can use a function along with List.tabulate() method to apply on all the elements of the ... WebNov 5, 2016 · When to use methods and when functions. use functions if you need to pass them around as parameters. use functions if you want to act on their instances, …
Scala and Functional Style: A Practical Example by - Medium
WebThere are some other differences, but for now, you can think of methods as something similar to functions. Methods can have multi-line expressions as well: Scala 2. Scala 3. def getSquareString (input: Double ): String = { val square = input * input square.toString } println (getSquareString ( 2.5 )) // 6.25. WebApr 9, 2024 · Scala state, function purity and separation of responsibility. I can't cope with how state should be implemented in Scala app. Assume I want to have a number generator but generated numbers are not totally random. They depend on the previous generated number. So let's have initial 33 and in each next call I want to increase 33 by number … biological half life define
Scala - Functions - TutorialsPoint
WebOct 12, 2024 · 1. Overview. In this tutorial, we’ll look at the advantages of Scala generics in implementing containers. We’ll examine how Scala generics provide type-safety while helping us adhere to the DRY principle. We’ll go through the steps of writing generic classes and methods and explore the generic types available in the standard Scala library. WebMar 29, 2024 · In this tutorial we will learn about Reduce, Fold and Scan functions in Scala. Reduce : Reduce function is applied on collection data structure in scala that contains lists, sets, maps, sequence and tuples. Parameter in the reduce function is a binary operation which merges all the elements from the collection and returns a single value. The first … Webdef double (a: Int) = a * 2 --------------. def is the keyword you use to define a method, the method name is double, and the input parameter a has the type Int, which is Scala’s … biological growth mold