Points to remember - Problem Solving Techniques : Function

Points to remember:

Algorithms are expressed using statements of a programming language

Subroutines are small sections of code that are used to perform a particular task that can be used repeatedly

A function is a unit of code that is often defined within a greater code structure

A function contains a set of code that works on many kinds of inputs and produces a concrete output

Definitions are distinct syntactic blocks

Parameters are the variables in a function definition and arguments are the values which are passed to a function definition through the function definition.

When you write the type annotations the parentheses are mandatory in the function definition

An interface is a set of action that an object can do

Interface just defines what an object can do, but won’t actually do it

Implementation carries out the instructions defined in the interface

Pure functions are functions which will give exact result when the same arguments are passed

The variables used inside the function may cause side effects though the functions which are not passed with any arguments. In such cases the function is called impure function