Trait OptionContext 

pub trait OptionContext<T> {
    // Required methods
    fn context_none(self, context: impl Into<String>) -> Result<T>;
    fn with_context_none<F, C>(self, f: F) -> Result<T>
       where F: FnOnce() -> C,
             C: Into<String>;
}

Extension trait for Option types to convert to errors with context.

Required Methods

fn context_none(self, context: impl Into<String>) -> Result<T>

Convert None to an error with the given context.

fn with_context_none<F, C>(self, f: F) -> Result<T>

where F: FnOnce() -> C, C: Into<String>,

Convert None to an error with context from a closure.

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> OptionContext<T> for Option<T>

fn context_none(self, context: impl Into<String>) -> Result<T>

fn with_context_none<F, C>(self, f: F) -> Result<T>

where F: FnOnce() -> C, C: Into<String>,

Implementors