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Dec 9, 2016 · Ordering in scala Ask Question Asked 6 years ago Modified 6 years ago Viewed 96 times 0 I learn Ordering from this link. And I tried the code below by my self: val pairs = Array ( ("a", 5, 2), ("c", 3, 1), ("b", 1, 3)) Sorting.quickSort (pairs) (Ordering [ (Int, String)].on [ (String, Int, Int)] ( (_._3,_.1)) However, there is an error says that:

An Ordering[T] is implemented by specifying compare(a:T, b:T), which decides how to order two instances a and b. Instances of Ordering[T] can be used by things ...

A type T can be given a single way to order itself by extending Ordered. Using Ordering, this same type may be sorted in many other ways. Ordered and Ordering both provide implicits allowing them to be used interchangeably. You can import scala.math.Ordering.Implicits to gain access to other implicit orderings.

scala.collection and its sub-packages contain Scala's collections framework. scala.collection.immutable - Immutable, sequential data-structures such as Vector, List, Range, …

Sorting in scala using sorted,sortBy and sortWith function. Sorting is arranging the data in ascending or descending order. Sorted data helps us searching easily. In mobile phone …

scala.collection and its sub-packages contain Scala's collections framework. scala.collection.immutable - Immutable, sequential data-structures such as Vector, List, Range, …

Overview

A Scala Set has no order so it can't be sorted. That's why SortedSet and TreeSet exists, in case you need an ordering to your collection of guaranteed-unique elements. …

Jul 12, 2018 · A Scala Set has no order so it can't be sorted. That's why SortedSet and TreeSet exists, in case you need an ordering to your collection of guaranteed-unique elements. – jwvh Jul 12, 2018 at 20:34 Show 1 more comment 1 Answer Sorted by: 2 You can use SortedSet as mentioned in the comments, example:

Sorting is arranging a data set in ascending or descending order based on criteria. It's very important for making search easy and effective ...

import scala.Ordered.orderingToOrdered. object OrderingAndOrderedTest extends App {. class Fraction(n: Int, d: Int) {. def value: Double = n.

Scala Algorithms: The most comprehensive library of algorithms in standard pure-functional Scala Study our 89 Scala Algorithms: 6 fully free, 89 published & 0 upcoming …

scala.collection and its sub-packages contain Scala's collections framework. scala.collection.immutable - Immutable, sequential data-structures such as Vector, List, Range, …

This trait and scala.math.Ordered both provide this same functionality, but in different ways. A type T can be given a single way to order itself by extending Ordered. Using Ordering, this same type may be sorted in many other ways. Ordered and Ordering both provide implicits allowing them to be used interchangeably.

Introduction to Scala SortBy Sorting is the process of ordering or arranging the elements in sequential or alphabetical order. Scala comes up with a special Sorting function applicable to …

Ordering is a trait whose instances each represent a strategy for sorting instances of a type. Ordering's companion object defines many implicit objects to ...

An Ordering[T] is implemented by specifying compare(a:T, b:T), which decides how to order to instances a and b. Instances of Ordering[T] can be used by things ...

I have a list of simple scala case class instances and I want to print them in predictable, lexicographical order using list.sorted ...

scala.collection and its sub-packages contain Scala's collections framework. scala.collection.immutable - Immutable, sequential data-structures such as Vector, List, Range, HashMap or HashSet; scala.collection.mutable - Mutable, sequential data-structures such as …

Ordering / Comparator. Java/Scala also defines another kind of abstraction which is used to compare two values. In java this interface is called Comparator and in scala …

Ordering is a trait whose instances each represent a strategy for sorting instances of a type. Ordering's companion object defines many implicit objects to ...