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Articles tagged with #scala
Introduction I have decided to dump my personal leetcode solutions archive. Currently it contains Scala solutions only. I will eventually publish all the remaining solutions in GO, JS and PHP and others. These solutions have been collected over years...
Let's implement a simple case class that represents a Time object that contains hours and minutes. For simplicity, we will use 24-hour clock. case class Time(hour: Hour, minutes: Minute) case class Hour(hour: Int) case class Minute(minute: Int) Now ...
Scala Array is not located in the scala.collection.mutable package, however, they are in fact mutable val arr = Array(1,2,3) arr(1) = 3 println(arr.mkString(",")) // 1,3,3 Immutable alternative to Scala Array is Scala Vector val arr = Vector(1,2,3) ...
There is an amazing util in Scala that is available in scala.util.chaining._. It adds two implicit methods to any scala object that allow chain commands (pipe) and apply side effects (tap). Tap example import scala.util.chaining._ trait StatsCounter...
We often use Option to handle collections safely: val collection = Map.empty[Int, Int] // unsafe way that will throw an exception if key is not present val value = collection(1) // safe way val valueOpt = collection.get(1) match { case Some(val...
Case classes in Scala are very handy because they have build extractor capability and other free features. We can define a case class and then use it conveniently in the code: import scala.collection.mutable case class MyFeature(a: Int, b: Int, c: I...
