Trait TryExtract 

pub trait TryExtract<A: Access<T>, T>: Access<T> + Sized {
    // Required method
    fn try_extract(
        self,
    ) -> Result<(A, <A as Access<T>>::RemainderFrom<Self>), Self>;
}

Trait for runtime checked extraction that may fail.

Returns Ok with (extracted, remainder) on success, or Err with original value on failure.

Most conversions delegate to Extract and always succeed; only Option<T> → T can fail when the value is None.

Required Methods

fn try_extract(self) -> Result<(A, <A as Access<T>>::RemainderFrom<Self>), Self>

Try to extract a value into target type and remainder parts.

Errors

Returns Err with the original value if the extraction cannot be performed (e.g., when trying to convert Option<T> to T but the value is None).

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, A: Access<T>> TryExtract<A, T> for Option<T>

fn try_extract(self) -> Result<(A, <A as Access<T>>::RemainderFrom<Self>), Self>

impl<T> TryExtract<Option<T>, T> for PhantomData<T>

fn try_extract( self, ) -> Result<(Option<T>, <Option<T> as Access<T>>::RemainderFrom<Self>), Self>

impl<T> TryExtract<PhantomData<T>, T> for PhantomData<T>

fn try_extract( self, ) -> Result<(PhantomData<T>, <PhantomData<T> as Access<T>>::RemainderFrom<Self>), Self>

Implementors

impl<T, A: Access<T>> TryExtract<A, T> for T