Trait OptionExt 

pub trait OptionExt {
    type Some;

    // Required methods
    fn ok_or_raise<A, F>(self, err: F) -> Result<Self::Some, Exn<A>>
       where A: Error + Send + Sync + 'static,
             F: FnOnce() -> A;
    fn ok_or_raise_erased<A, F>(self, err: F) -> Result<Self::Some, Exn>
       where A: Error + Send + Sync + 'static,
             F: FnOnce() -> A;
}

An extension trait for Option to provide raising new exceptions on None.

Required Associated Types

type Some

The Some type.

Required Methods

fn ok_or_raise<A, F>(self, err: F) -> Result<Self::Some, Exn<A>>

where A: Error + Send + Sync + 'static, F: FnOnce() -> A,

Construct a new Exn on the None variant.

fn ok_or_raise_erased<A, F>(self, err: F) -> Result<Self::Some, Exn>

where A: Error + Send + Sync + 'static, F: FnOnce() -> A,

Construct a new Exn on the None variant, with type erasure.

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> OptionExt for Option<T>

type Some = T

fn ok_or_raise<A, F>(self, err: F) -> Result<T, Exn<A>>

where A: Error + Send + Sync + 'static, F: FnOnce() -> A,

fn ok_or_raise_erased<A, F>(self, err: F) -> Result<T, Exn>

where A: Error + Send + Sync + 'static, F: FnOnce() -> A,

Implementors