Crate envmnt

envmnt

Environment variables utility functions.

This library has many helper functions to access/modify/check environment variables.

Example

extern crate envmnt;

fn main() {
    if !envmnt::exists("MY_ENV_VAR") {
        envmnt::set("MY_ENV_VAR", "SOME VALUE");
    }

    let value = envmnt::get_or("MY_ENV_VAR", "DEFAULT_VALUE");
    println!("Env Value: {}", &value);

    envmnt::set_bool("FLAG_VAR", true);
    let flag_value = envmnt::is_or("FLAG_VAR", false);
    println!("Bool Flag: {}", &flag_value);

    let pre_value = envmnt::get_set("MY_ENV_VAR", "SOME NEW VALUE");

    let value = envmnt::get_or("MY_ENV_VAR", "DEFAULT_VALUE");
    println!("New Env Value: {}", &value);
    println!("Previous Env Value: {:?}", &pre_value);
}

Installation

In order to use this library, just add it as a dependency:

[dependencies]
envmnt = "*"

Contributing

See contributing guide

License

Developed by Sagie Gur-Ari and licensed under the Apache 2 open source license.

Functions

exists	Returns true environment variable is defined.
get_or	Returns the environment variable value or if is not defined, the default value will be returned.
get_remove	Removes the provided environment variable and returns its previous value (if any).
get_set	Sets the environment variable value and returns the previous value.
is_or	Returns false if environment variable value if falsy. The value is falsy if it is one of the following:
remove	Removes the provided environment variable.
set	Sets the environment variable value.
set_bool	Sets the environment variable with a true/false value as string.