Trait OptionExt 

pub trait OptionExt<T> {
    // Required methods
    fn context(self, msg: impl Display) -> Result<T>;
    fn with_context<F, M>(self, f: F) -> Result<T>
       where F: FnOnce() -> M,
             M: Display;
}

Extension methods on Option<T>.

Required Methods

fn context(self, msg: impl Display) -> Result<T>

Convert None into an anyhow::Error with the given message.

fn with_context<F, M>(self, f: F) -> Result<T>

where F: FnOnce() -> M, M: Display,

Like OptionExt::context but the message is lazily constructed.

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<T> for Option<T>

fn context(self, msg: impl Display) -> Result<T>

fn with_context<F, M>(self, f: F) -> Result<T>

where F: FnOnce() -> M, M: Display,

Implementors