Hire Top Scala developers with UltraGenius

Scala is robust language designed mainly for parallel data processing, distributed computing, and application development. Scala makes it possible to combine both functional programming and object-oriented programming approach. This unique feature of Scala makes freelance Scala developers write better and high-performance code with many powerful features like lambda expressions, macros, functions, and tuples. 

Object-Oriented Approach of Scala : -

object Scala_program{

def main(arg : Array[String]){

println("Welcome to UltraGenius")

}

}

Output - Welcome to UltraGenius

Functional Programming Approach of Scala for the same code :-

def scala_program{

println("Welcome to Interviewbit");

}

scala_program

Output - Welcome to UltraGenius

Scala is widely used in processing massive amounts of data becuase of its parallel processing ability which process petabytes of data parallely, making CPU more efficient and saves a lot of time in computation.

Higher order functions takes another function as an argument or returns the output as an argument. Higher order functions makes your code more concise and high-performing. For example, here apply function takes another function as an argument.

object UltraGenius{

def main(arg : Array[String]){

println(apply(format, 25))

}

def apply(x : Double  => String, y : Double) = x(y)

def format[A] (a : A) = "{" + a.toString() + "}"

The output of the above program is {25.0}.

Scala Closures are the functions in Scala whose return value is dependent on one or more variables that are declared outside that function.

A lambda expression is an anonymous block of code with a more concise and functional syntax. Lambda expressions prevent developers write multiple lines of code and make the program look clean and concise. Lambda expressions can be stored in a variable also if the data type of that variable is an interface which contains only one method. However, the condition is that the lambda expression must have the same number of arguments with same data type and same return data type as that of the method in the interface. 

Immutable objects in Scala provide thread-safe data and prevent errors in distributed computing. Freelance Scala developers must know about immutability concept in Scala to avoid making unwanted changes in variables, and type extra arguments. It is easier to parallelize programs when the objects are immutable as no conflicts occur between the objects. The internal state of the program will not get affected even if your program contains exceptions.

Currying is a popular technique for transforming functions and converts a function with multiple arguments into a sequence of function(s) with only one argument. Currying refactors your code easily and gives the advantage to use the techniques designed for the one argument functions.

Monads in Scala are used to perform sequential calculations around a specific value augmented with some special feature. A monad is an object that wraps another object and the output of each step serves as an input to the next step. For example, FlatMap is an example of monad which applies one to many transformations to the elements and flattening the result. It is different from map in the way it produces output to a set of multiple arbitrary values. 

Scala has the default packages - java.lang, java.io, and PreDef. 

java.lang - java.lang is the fundamental package which provides a variety of classes and functions to utilize. Objects and Classes are the core classes. java.lang.Object is the root class of any class in the hierarchy and java.lang.Class provides the freelance Scala developer to create classes as instance to this class.

Tail recursion is the unique feature associated with Scala programming language. A recursion is called a tail recursion if it is the last task that is done by the compiler. Normally, while performing regular recursions, the recursive calls are not optimized as there is the need to track the state of each recursive call. But, in tail recursion, the need to store the previous state of the recursive function.