Println(s"$")Ĭhocolate donut taste level = Very Tasty, price = 3. Val glazedDonut = Tuple3("Glazed Donut", "Very Tasty", 2.50) Println("\nStep 3: Using TupleN classes to store more than 2 data points") Not to worry, Scala provides Tuple3 class to achieve just this! You now have 3 data points namely the donut type, its taste level and then its price. in the below example i have created tuple called Fruitstuple which holds fruit name. What if you also wanted to store the price of the glazed donut?. Scala Tuple is used to hold different values of different types. Let's extend our examples from Step 1 and 2. Println(s"$donutType taste level is $donutTasteLevel")ģ. Using TupleN classes to store more than 2 data points Val donutTasteLevel = glazedDonutTuple._2 I just ran across this post about using tuples in an anonymous function, and thought it was good enough to reproduce here, with only the solution part. Println("\nStep 2: Access each element in tuple") What if you now would like to access each individual element. In Step 1, we've only printed the tuple glazedDonutTuple. Glazed Donut with 2 data points = (Glazed Donut,Very Tasty) Step 1: Using Tuple2 to store 2 data points You should see the following output when you run your Scala application in IntelliJ: Println(s"Glazed Donut with 2 data points = $glazedDonutTuple") Think of it this way: to run a Scala application the classes needed to run it must be. Val glazedDonutTuple = Tuple2("Glazed Donut", "Very Tasty") Functions and tuples are rewritten as objects by the compiler. Println("Step 1: Using Tuple2 to store 2 data points") What if you would like to store the taste level of donuts along with the donut type? The Tuple2 class is your friend here :) Tuple.scala inline def splitAt This >: ( T1, T2 ) <: Tuple ( n: Int ): ( This, n. setB instead of SetB.Let's continue using our donut examples from the previous tutorials. Also variables shouldn't start with an upper case, c.f.Nevermind, the same result requires to walk through the list as in the original post. *If the exact same output is desired*, that'd be this then: via for.Īlso splitting the computation into multiple steps might help with understanding what's going on (especially in a debugger), that's also why I copied over the type signatures as you did. As I wrote in my comment I don't quite understand the reasoning behind the algorithm and if it's a real requirement that it's going to be iterative like this, you'll likely have to use the implementation you have right now, i.e. And lists are already ordered.Ī this needs us to write full filter case method so it wont work like this"Īpart from my comment, I'd suggest using Set for, well sets, since operations will likely be quicker, but more importantly, they're more correct wrt. ListB drives the main priority and after that in case of repeating values the List A does it. Notable packages include: llection and its sub-packages contain Scalas collections framework. The scala package contains core types like Int, Float, Array or Option which are accessible in all Scala compilation units without explicit qualification or imports. if no match is found then List(0) would be output. This is the documentation for the Scala standard library. This process would repeat again once we fetch first match. For example tuple ("A", "B") is present in ListA with (("A", "B"), 1). We need to search id in ListA that contain ListB element. This is part of my organization work so can't disclose it fully here like why such requirement. I am trying to understand the best way to write this.
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