In Scala, methods and functions are two important concepts that have some differences in syntax but some similarities in practical use.
Methods are part of a class or object that is included in the definition of a class or object and has access to member variables of the class or object. Methods can be defined using def keywords, for example:
class myclass
In the example above, mymethod is a method that belongs to the myclass class and takes two arguments x and y and returns their sum.
Functions are first-class citizens in Scala, which means that functions can be passed, assigned, and passed as arguments to other functions just like normal variables. Functions can be defined using the => symbol, for example:
val addfunction=(x:int,y:int)=>x+y
In this example, AddFunction is a function that takes two arguments, x and y, and returns their sum.
Another way to define a function is to use the def keyword, which is also called method values, for example
def addfunction(x:int,y:int):int=x+y
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In this example, addfunction is defined as a function, which is similar to the method definition above, but it does not belong to any particular class or object.
In Scala, the difference between a method and a function is that a method is part of a class or object, while a function is an independent value. But in practice, you can use methods and functions just like you would with normal variables, and they can all be called, passed, and assigned. This flexibility makes methods and functions in Scala much easier to program.