Trait dotenv::ResultExt

pub trait ResultExt<__T, __E: Error + Send + 'static> {
    fn chain_err<__F, __EK>(self, callback: __F) -> Result<__T, Error>
    where
        __F: FnOnce() -> __EK,
        __EK: Into<ErrorKind>;
}

Additional methods for Result, for easy interaction with this crate.

Required Methods

fn chain_err<__F, __EK>(self, callback: __F) -> Result<__T, Error> where
    __F: FnOnce() -> __EK,
    __EK: Into<ErrorKind>, 

If the Result is an Err then chain_err evaluates the closure, which returns some type that can be converted to ErrorKind, boxes the original error to store as the cause, then returns a new error containing the original error.

Implementors

• impl<__T, __E: Error + Send + 'static> ResultExt<__T, __E> for Result<__T, __E>