dependencyinversion

22 Sep

From Dependency Inversion to Dependency Injection in Python

stp2y0 CommentsNewsarchitecture, coding, community, dependencyinversion, development, engineering, inclusive, python, software

Introduction The Dependency Inversion Principle (DIP) and Dependency Injection (DI) are powerful concepts that can significantly improve the design of your Python code. In this post, we will explore these principles in detail, starting with a high-level overview and progressing to practical examples. By the end, you’ll have a deeper understanding of how to write modular, maintainable, and flexible Python code that adheres to these best practices. Let’s start with a famous quote from Robert C. Martin: “High-level modules should not depend on low-level modules; both should depend on abstractions. Abstractions should not depend on details; details should depend upon…

06 Jul

Build your own DI Container in JavaScript.

stp2y0 CommentsNewscoding, community, dependencyinversion, designpatterns, development, engineering, inclusive, javascript, software

What we will build In this chapter we will implement our own DI Container in JavaScript. We will create a checkout simulation and we are going to use our DI Container to handle the dependency injection. The services Here is the service classes and the flow of our application. We have a credit card, a shipping bag and then a class that handles the transaction and one that sends the order. // Independent service class CreditCard { owner; address; number; cvc; set(owner, address, number, cvc) { this.owner = owner; this.address = address; this.number = number; this.cvc = cvc; } }…