Environment Variables (std.env)

Query and modify process environment variables or locate system temporary folders:

---

import std.env

// Read an environment variable (returns Nil if not found)
let port = env.get("PORT")
if port == Nil {
    port = "8080"
}

// Set or replace an environment variable for child processes
env.set("APP_ENV", "production")

// Retrieve the system temporary directory path
let tmp_dir = env.temp()
println($"Temporary Directory: {tmp_dir}")

---

API Reference

Method	Arguments	Returns	Description
env.get	key: String	String | Nil	Retrieves the value of an environment variable, or Nil if unset.
env.set	key: String, value: String	Nil	Sets or overwrites an environment variable in the current process scope.
env.remove	key: String	Nil	Deletes an environment variable from the current process scope.
env.vars	None	Formula	Returns a key-value formula map of all currently exported environment variables.
env.temp	None	String	Returns the absolute path to the system temporary folder.