Macro laby::disp

macro_rules! disp {
    ($expr:expr) => { ... };
}

👎Deprecated since 0.4.0: use format_args!("{}", ...) instead

Wraps a Display in RenderDisplay, making it implement Render.

This is a convenience macro that wraps the given expression in RenderDisplay.

Beginning with laby 0.4, Arguments struct implements Render directly so disp! and RenderDisplay are deprecated. You should write format_args!("{}", expr) instead of disp!(expr).

Expansion

// disp!($expr)
{
    RenderDisplay($expr)
}

Example

This example renders a value that implements Display by wrapping it using disp!.

struct Name<'a> {
    s: &'a str,
}

impl Display for Name<'_> {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}", self.s)
    }
}

let s = render!(disp!(Name {
    s: "laby"
}));

assert_eq!(s, "laby");