Web27 nov. 2024 · To me, it seems like you want a set, not a sequence/list. Set also has the method you want: val KeepCols = Set ("id", "type", "month", "car", "road") val tmp = KeepCols.diff (Set ("id", "type", "month")) If you don't want to use a set, Seq also has diff. Share Improve this answer edited Oct 30, 2024 at 13:50 answered Oct 30, 2024 at 13:36 WebThe following is the syntax for declaring an Seq variable. Syntax val seq: Seq [Int] = Seq (1, 2, 3, 4, 5) Here, seq is declared as an Seq of numbers. Seq provides commands like the following − Command val isPresent = seq.contains (4); val contains = seq.endsWith (Seq (4,5)); var lastIndexOf = seq.lasIndexOf (5); Processing Seq
Scala Seq Types of Scala Seq Syntax Methods Examples
Web26 jan. 2024 · Last updated: January 26, 2024 As a quick note, if you ever need to fill/populate a Scala list with the same element X number of times, one solution is to use the fill method that’s available to Scala sequences, like this: scala> val x = List.fill (3) ("foo") x: List [String] = List (foo, foo, foo) WebAre you looking for a default value for a non initialized char? Since java has primitive types: char a; print (a) would assign the int value 0 to a and it's respectively char mapping. So … can red tide cause sore throat
Simple concurrency with Scala Futures (Futures tutorial)
Web29 sep. 2024 · Pattern matching is a powerful feature of the Scala language. It allows for more concise and readable code while at the same time providing the ability to match elements against complex patterns. In this tutorial, we’ll discover how to use pattern matching in general and how we can benefit from it. 2. Webhead is a great method to work with, but as a word of caution it can also throw an exception when called on an empty collection: scala> val emptyList = List [ Int ] () val emptyList: … WebScala seq has two types of methods available Concrete Abstract 1. foreach () This method is used to iterate the elements of the sequence and print them. Code: var mySeq: Seq [ … flanged button head socket cap screw