Environment Variables by Language
Every language has its own way of accessing environment variables. Choose your language to learn the idiomatic approach, popular libraries, and common pitfalls.
Node.js
Access env vars with process.env in Node.js and Bun
Python
Using os.environ and python-dotenv
Go
Using os.Getenv and envconfig packages
Rust
Using std::env and dotenvy
Java
System.getenv() and Spring Boot properties
Ruby
ENV[] and dotenv gem
PHP
getenv() and $_ENV superglobal
C#
Environment.GetEnvironmentVariable and IConfiguration