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(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 init! invocation.