Function init_scope

pub fn init_scope<T, E, F, I>(make_init: F) -> impl Init<T, E>
where
    F: FnOnce() -> Result<I, E>,
    I: Init<T, E>,

Construct an initializer in a closure and run it.

Returns an initializer that first runs the closure and then the initializer returned by it.

See also pin_init_scope.

Examples

fn init_foo() -> impl Init<Foo, Error> {
    init_scope(|| {
        let bar = lookup_bar()?;
        Ok(try_init!(Foo { a: bar.a.into(), b: bar.b }? Error))
    })
}

This initializer will first execute lookup_bar(), match on it, if it returned an error, the initializer itself will fail with that error. If it returned Ok, then it will run the initializer returned by the try_init! invocation.