std.env

Environment variable access.

import std.env

Functions

get

env.get(name: string) string

Returns the value of the environment variable, or an empty string if not set.

get_or

env.get_or(name: string, default_val: string) string

Returns the value of the environment variable, or default_val if not set.

let port = env.get_or("PORT", "8080")

set

env.set(name: string, value: string)

Sets an environment variable.

exists

env.exists(name: string) bool

Returns true if the environment variable is set.

list_names

env.list_names() [string]

Returns an array of all environment variable names.

remove

env.remove(name: string) bool

Removes an environment variable. Returns true if it existed.

Example

import std.env

fn main() {
    let host = env.get_or("DATABASE_HOST", "localhost")
    let port = env.get_or("DATABASE_PORT", "5432")
    print(f"Connecting to {host}:{port}")
}