WebFeb 18, 2024 · The range function can also take a third argument which serves as a "step" value when creating the List: scala> val x = List.range (0,10,2) x: List [Int] = List (0, 2, 4, 6, 8) The List ‘fill’ method You can also create a new List with its fill method: scala> val x = List.fill (3) ("foo") x: List [java.lang.String] = List (foo, foo, foo) WebMay 11, 2015 · Iterate over dates range (the scala way) Ask Question Asked 7 years, 10 months ago Modified 2 years, 4 months ago Viewed 30k times 14 Given a start and an end date I would like to iterate on it by day using a foreach, map or similar function. Something like (DateTime.now to DateTime.now + 5.day by 1.day).foreach (println)
How to iterate over Scala Lists with foreach and for
WebSep 28, 2024 · This is an excerpt from the 1st Edition of the Scala Cookbook (partially modified for the internet). This is Recipe 9.2, “How to use functions as variables (values) in Scala.” Problem. You want to pass a Scala function around like a variable, just like you pass String, Int, and other variables around in an object-oriented programming language. ... WebAug 3, 2024 · How to create a Range in Scala? In FP, What is the difference between a function and a procedure? What are the major differences between Scala’s Auxiliary constructors and Java’s constructors? What is the use of ‘yield’ keyword in Scala’s for-comprehension construct? What is guard in Scala’s for-comprehension construct? sky55 chicago apartments
Range in Scala Baeldung on Scala
WebHere is a solution using a User Defined Function which has the advantage of working for any slice size you want. It simply builds a UDF function around the scala builtin slice method : import sqlContext.implicits._ import org.apache.spark.sql.functions._ val slice = udf((array : Seq[String], from : Int, to : Int) => array.slice(from,to)) WebAug 24, 2024 · Let’s discuss them one by one: Upper Limit Parameter: This is the first parameter of range. This parameter specifies the first value of the sequence... Lower … WebJan 19, 2024 · Scala is a functional language. Functions are first-class values here – we can use them like any other value type. In this section, we’ll look into some advanced concepts related to functions – local functions, higher-order functions, anonymous functions, and currying. ... By passing different functions, we can solve a range of problems ... sky4you.germanwings.com