Function load 

pub fn load() -> Result<PathBuf>

Load the .env file from the current directory or its parents.

Searches upward from the current working directory until .env is found. The first call loads variables; subsequent calls are no-ops through Dotenv::load (existing variables are preserved).

Errors

Returns Error::Io if no .env file is found or it cannot be read.

Examples

dotenv::load().ok();