Programming Paradigms

2021-01-03 256 words 2 minutes

Contents

Since the birth of programming, we have developed three programming paradigms

1 Structured Programming

Goto statements allow the transfer of control from one part of the program to another
Although it is very powerful some goto statements prevent modules to be broken down into sub-modules.
All other uses of goto apart from if/else statements and loops are considered harmful and all modern languages do not allow them

It is the use of polymorphism to gain full control over all dependencies in a system.
This forms the basis for creating highly extensible and modifiable systems by the use of plugin architecture

Immutability is the setting of some variables to never change
From the architectural point of view setting some variables (storages/ component) ensures that there will be no deadlock, race condition, and no need to manage concurrent access. Thus improving the architecture
But there is an upper limit on the number of such immutable components
Thus separate the immutable components from mutable components
The immutable components should never depend on mutable components due to obvious reasons

Structured programming is discipline imposed upon direct transfer of control allowing only if/ else and loops to transfer control
Object-oriented programming is discipline imposed upon indirect transfer of control.
Separating code into layers (classes) and managing dependencies in a way that they can be swapped with ease
Functional programming is discipline imposed upon variable assignment to create some variables as immutable to increase throughput and creating dependencies from the mutable to immutable