Programming languages have rapidly evolved in recent years. But in software development, the new often meets the old, and the scaffolding that OS gives for running new processes hasn’t changed much since Unix. If you need to parametrize your application at runtime by passing a few ad-hoc variables (without special files or a custom solution involving IPC or networking), you’re doomed to a pretty awkward, outdated interface: Environment variables. export SECRET_API_KEY=2u845102348u234 There are no namespaces for them, no types. Just a flat, embarrassingly global dictionary of strings. But what exactly are these envvars? Is it some kind of special dictionary…
