Trait RiOptionErrorContext 

pub trait RiOptionErrorContext<T> {
    // Required methods
    fn ok_or_chain<E>(self, err: E) -> Result<T, RiErrorChain>
       where E: StdError + Send + Sync + 'static;
    fn ok_or_else_chain<E, F>(self, f: F) -> Result<T, RiErrorChain>
       where E: StdError + Send + Sync + 'static,
             F: FnOnce() -> E;
}

Extension trait for adding error context to Option types.

Required Methods

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

where E: StdError + Send + Sync + 'static,

Converts None to an error with context.

fn ok_or_else_chain<E, F>(self, f: F) -> Result<T, RiErrorChain>

where E: StdError + Send + Sync + 'static, F: FnOnce() -> E,

Converts None to an error with lazy context.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T> RiOptionErrorContext<T> for Option<T>

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

where E: StdError + Send + Sync + 'static,

fn ok_or_else_chain<E, F>(self, f: F) -> Result<T, RiErrorChain>

where E: StdError + Send + Sync + 'static, F: FnOnce() -> E,

Implementors