Clean Architecture ch1-ch3

book • design pattern • architecture • software

20 Feb 2018

Notes on Robert C. Martin - Clean Architecture: A Craftsman’s Guide to Software Structure and Design, chapter 1-3.

The goal of software architecture is to minimize the human resources required to build and maintain the required system.

Two perspectives of software:

1. behaviors (functions, features)
2. architecture - software must be easy to change, however, when the scope grows, changes become harder and harder.

• Software architects are more focused on the structure of the system than on its features and functions”

• Architects create an architecture that allows those features and functions to be easily developed, modified and extended.
• If architecture comes last, then the system will become ever more costly to develop, and eventually change will become practically impossible for part or all of the system.

Paradigms: overview

• structured programming by Dijkstra - goto, if then else, do while until.
• object-oriented patterns - class, constructor, method

Object-oriented programming imposes discipline on indirect transfer of control.

• functional programming - lambda calculus, no assignment

Functional programming imposes discipline upon assignment.