Function context_fn 

pub fn context_fn<E, C>(context: C) -> impl Fn(E) -> ComposableError<E>
where
    C: IntoErrorContext + Clone,

Creates a reusable closure that wraps errors with a fixed context.

Returns a function that can be used with map_err to attach the same context to multiple error paths.

Arguments

• context - The context to attach (must be Clone)

Examples

use error_rail::{context_fn, ErrorContext};

let add_tag = context_fn(ErrorContext::tag("network"));
let err = add_tag("timeout");
assert_eq!(err.context().len(), 1);