Module env Copy item path Source get Get the value of the environment variable key as T.
If the variable is not set or cannot be parsed, it panics with a message. get_optional Get the value of the environment variable key as T.
If the variable is not set or cannot be parsed, it returns None.
/// # Example get_optional_or Get the value of the environment variable key as T.
If the variable is not set or cannot be parsed, it returns default. get_optional_or_else Get the value of the environment variable key as T.
If the variable is not set or cannot be parsed, it returns the result of f. get_or Get the value of the environment variable key as T.
If the variable is not set or cannot be parsed, it returns default. get_or_else Get the value of the environment variable key as T.
If the variable is not set or cannot be parsed, it returns the result of f. get_or_else_with_hashmap Get the value of the environment variable key as T from a provided hashmap.
If the variable is not set or cannot be parsed, it returns the result of f. get_or_with_hashmap Get the value of the environment variable key as T from a provided hashmap.
If the variable is not set or cannot be parsed, it returns default.