Struct TypedErr 

pub struct TypedErr<E> { /* private fields */ }

A typed wrapper around a user error that provides Deref access to the inner error type.

This struct holds an Arc<anyhow::Error> internally and provides safe access to the downcasted error reference. The Arc ensures the error remains valid for the lifetime of this wrapper.

Example

use query_flow::{QueryResultExt, TypedErr};

let result = db.query(MyQuery::new()).downcast_err::<MyError>()?;
match result {
    Ok(value) => { /* success */ }
    Err(typed_err) => {
        // typed_err derefs to &MyError
        println!("Error code: {}", typed_err.code);
    }
}

Implementations

impl<E: Error + Send + Sync + 'static> TypedErr<E>

pub fn get(&self) -> &E

Returns a reference to the inner error.

Trait Implementations

impl<E: Clone> Clone for TypedErr<E>

fn clone(&self) -> TypedErr<E>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<E: Error + Send + Sync + 'static> Debug for TypedErr<E>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<E: Error + Send + Sync + 'static> Deref for TypedErr<E>

type Target = E

The resulting type after dereferencing.

fn deref(&self) -> &E

Dereferences the value.

impl<E: Error + Send + Sync + 'static> Display for TypedErr<E>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.