WebJun 2, 2024 · scala> myList.zipWithIndex.collect { case (elem, index) if index != 0 => elem } res2: List [Int] = List (2, 1, 3, 2) To remove first occurrence of elem, you can split at first … WebApr 17, 2024 · We can delete an element from ListBuffer using, Using -= operator Using remove () method Using --= operator (deletes elements of another collection) 1) Using -= …

How to delete elements from the Set in Scala? - includehelp.com

WebScala list is immutable which means once assign object cannot change itself. List is also a part of the collection that is used to store and retrieve elements. List in scala is some like array which store elements of the same type only. Scala list internally uses a linked list and as we know the linked list is better suited for manipulation ... You can use remove to delete from a given starting position and provide the number of elements to delete: scala> x.remove (1, 3) scala> x res4: scala.collection.mutable.ListBuffer [Int] = ListBuffer (4, 9) You can also use --= to delete multiple elements that are specified in another collection: See more A Listis immutable, so you can’t delete elements from it, but you can filter out the elements you don’t want while you assign the result to a new variable: Rather than … See more When you first start using Scala, the wealth of methods whose names are only symbols (+:, /:, :::, etc.) can seem daunting, but the -= and --=methods are used … See more katherine firma

How do I remove items from a list in Scala? – ITExpertly.com

WebAny time you want to add or remove List elements, you create a new List from an existing List. Creating Lists This is how you create an initial List: val ints = List ( 1, 2, 3 ) val names = List ( "Joel", "Chris", "Ed" ) You can also declare the List ’s type, if you prefer, though it generally isn’t necessary: WebYou can also append elements to a List, but because List is a singly-linked list, you should really only prepend elements to it; appending elements to it is a relatively slow operation, … WebMar 18, 2024 · To remove an element from the list, you can use the del keyword followed by a list. You have to pass the index of the element to the list. The index starts at 0. Syntax: del list [index] You can also slice a range of elements from the list using the del keyword. layer cake free movie