Trait OptionExt 

pub trait OptionExt<T> {
    // Required method
    fn try_map<U, E>(
        self,
        f: impl FnOnce(T) -> Result<U, E>,
    ) -> Result<Option<U>, E>;
}

Extension trait for Option

Required Methods

fn try_map<U, E>( self, f: impl FnOnce(T) -> Result<U, E>, ) -> Result<Option<U>, E>

Map an option with a fallible function

option.try_map(f) is equivalent to option.map(f).transpose()

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 try_map<U, E>( self, f: impl FnOnce(T) -> Result<U, E>, ) -> Result<Option<U>, E>

Implementors