Function into_handler 

pub const fn into_handler<H, P, T>(h: H) -> IntoHandler<H, P, T>
where
    P: 'static,
    T: 'static,
    H: HandlerFn<P, T>,

Converts a function into an immutable handler.

Arguments

• h - The function to convert into a handler

Returns

A handler that implements the Handler trait