Trait FlatOk 

pub trait FlatOk<T> {
    // Required methods
    fn flat_ok(self) -> Option<T>;
    fn flat_ok_or<E>(self, err: E) -> Result<T, E>;
    fn flat_ok_or_else<E, F: FnOnce() -> E>(self, err: F) -> Result<T, E>;
}

Required Methods

fn flat_ok(self) -> Option<T>

Equivalent to .transpose().ok().flatten()

fn flat_ok_or<E>(self, err: E) -> Result<T, E>

Equivalent to .transpose().ok().flatten().ok_or(…)

fn flat_ok_or_else<E, F: FnOnce() -> E>(self, err: F) -> Result<T, E>

Equivalent to .transpose().ok().flatten().ok_or_else(…)

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<T, E> FlatOk<T> for Option<Result<T, E>>

fn flat_ok(self) -> Option<T>

fn flat_ok_or<Ep>(self, err: Ep) -> Result<T, Ep>

fn flat_ok_or_else<Ep, F: FnOnce() -> Ep>(self, err: F) -> Result<T, Ep>

Implementors

impl<T, E> FlatOk<T> for Result<Option<T>, E>