What are the main principles of software development you apply in your work?

The main principles of software development that I apply:

• Clean code: I write code that is easy to read and maintain, using clear variable and function names.
• Single Responsibility Principle (SRP): each function or module is responsible for one task.
• DRY (Don't Repeat Yourself): I avoid code duplication by extracting repeating parts into functions or packages.
• Testability: I write unit tests for key components to ensure reliability.
• Idempotency and error handling: I handle errors and exceptions correctly so that the application does not crash.
• Use of interfaces: for abstraction and simplifying the replacement of implementations.

An example in Go demonstrating the single responsibility principle and interfaces:

package main

import "fmt"

type Notifier interface {
    Notify(message string) error
}

type EmailNotifier struct {}

func (e EmailNotifier) Notify(message string) error {
    fmt.Println("Sending email with message:", message)
    return nil
}

func SendAlert(n Notifier, msg string) {
    err := n.Notify(msg)
    if err != nil {
        fmt.Println("Error sending notification:", err)
    }
}

func main() {
    email := EmailNotifier{}
    SendAlert(email, "Server is down!")
}

This approach facilitates maintenance and code extension.