September 2023
Intermediate to advanced
430 pages
8h 6m
English
Content preview from Clean Code Cookbook
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Chapter 6. Declarative Code
Behavior is the most important thing about software. It is what users depend on. Users like it when we add behavior (provided it is what they really wanted), but if we change or remove behavior they depend on (introduce bugs), they stop trusting us.
Michael Feathers, Working Effectively with Legacy Code
6.0 Introduction
Declarative code is a type of programming code that describes what a program should do, rather than specifying the steps that the program should take to accomplish a task. The code focuses on the desired outcome (what), rather than the process of achieving that outcome (how). Declarative code is easier to read and understand than imperative code, which specifies the steps that a program should take to accomplish a task. The code is also more concise and focused on the ultimate outcome, rather than the specific details of how that result is achieved.
Declarative code is often used in programming languages that support functional programming, which is a programming paradigm that emphasizes the use of functions to describe the computation of a program. Examples of declarative programming languages include SQL, which is used for managing databases, and HTML, which is used to structure and format documents for the web.
Software development carries an inertia from times where you needed to write software in low-level languages due to restrictions of time and space. This is no longer the case as modern compilers and virtual machines are ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.