Value parameters: end. the end value of the collection (the first value NOT contained) start. the start value of the collection. step. the difference between successive elements o
Python List Comprehension is one of the most used python list functions. The main aim of this syntax is creating a new list from th existing list according to a condition. For example, we can check a list of strings and if a certain characetr exist in any of this string, we can create a new list from this list.
Sep 06, 2021 · Let’s create a macro that takes two parameters a: A and String, and if the second parameter is "String" declare an Either[String, A], and if the second parameter is "List[String]", make Either[List[String], A]. We can then do some operation on top like flatMap to check if the value is zero.
R list is the object which contains elements of different types - like strings, numbers, vectors and another list inside it. R list can also contain a matrix or a function as its elements. The list is created using the list () function in R. In other words, a list is a generic vector containing other objects.
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In this very brilliant article, you can find a comparison between Scala libraries in terms of parsing speed.One of the best result was given by the json4s library.In the first part I will describe the library and it's main functions, while in the second part I'll go in deep showing some more detailed examples. As usual let's create a Maven Scala project with Eclipse, adding the following ...
var c = from d in CustomerOrders select d.OrderLines.ToList(); IEnumerable<string> b = from q in (c as List<OrderLine>) select q.ProductCode; The first line is fine, but the next one causes an exception becase c is null. I didn't even get to trying to find the distinct values from the list :)
type SomeInts = List [ Int ] val intList: SomeInts = List ( 3, 6, 2, 2 ) assert ( ListIntFunctions .mean (intList) === 3.25) In other words, we can use List [Int] or its aliases interchangeably. 2.2. Type Alias for Function Types. Another use case for type alias is function types. We can use a type alias to simplify the declaration of a ...
Save the above program in Demo.scala. The following commands are used to compile and execute this program. Command \>scalac Demo.scala \>scala Demo Output 1.9 2.9 3.4 3.5 8.9 7.9 0.4 1.5 Create Array with Range. Use of range() method to generate an array containing a sequence of increasing integers in a given range.