Function dotenv::from_filename

pub fn from_filename(filename: &str) -> Result<(), DotenvError>

Loads the specified file from the environment’s current directory or its parents in sequence.

Examples

use dotenv;
dotenv::from_filename("custom.env").ok();

It is also possible to do the following, but it is equivalent to using dotenv::dotenv(), which is preferred.

use dotenv;
dotenv::from_filename(".env").ok();