Trait OrFail 

pub trait OrFail: Sized {
    type Value;
    type Error;

    // Required methods
    fn or_fail(self) -> Result<Self::Value>;
    fn or_fail_with<F>(self, f: F) -> Result<Self::Value>
       where F: FnOnce(Self::Error) -> String;
}

This trait allows for converting a value into Result<_, Failure>.

Required Associated Types

type Value

Success value type (used for the Ok(_) variant).

type Error

Type of error from which the Failure message is created.

Required Methods

fn or_fail(self) -> Result<Self::Value>

Returns Err(Failure) if self is a failure value.

If Err(_) is returned, this method should add the current caller location to the backtrace of the resulting Failure.

fn or_fail_with<F>(self, f: F) -> Result<Self::Value>

where F: FnOnce(Self::Error) -> String,

Like OrFail::or_fail(), but allows for customizing the Failure message.

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 OrFail for bool

type Value = ()

type Error = ()

fn or_fail(self) -> Result<Self::Value>

fn or_fail_with<F>(self, f: F) -> Result<Self::Value>

where F: FnOnce(Self::Error) -> String,

impl<T> OrFail for Option<T>

type Value = T

type Error = ()

fn or_fail(self) -> Result<Self::Value>

fn or_fail_with<F>(self, f: F) -> Result<Self::Value>

where F: FnOnce(Self::Error) -> String,

impl<T, E: Error> OrFail for Result<T, E>

type Value = T

type Error = E

fn or_fail(self) -> Result<Self::Value>

fn or_fail_with<F>(self, f: F) -> Result<Self::Value>

where F: FnOnce(Self::Error) -> String,

Implementors

impl<T> OrFail for orfail::Result<T>

type Value = T

type Error = String