Class FDisplay

crates/codegen/src/util.rs:39–39

/// Turns a closure `f: Fn(&mut Formatter) -> Result` into `fmt::Display`.
pub(super) fn fmt_fn(f: impl Fn(&mut Formatter) -> Result) -> impl Display {
    struct FDisplay<F>(F);
    impl<F: Fn(&mut Formatter) -> Result> Display for FDisplay<F> {
        fn fmt(&self, f: &mut Formatter<'_>) -> Result {
            (self.0)(f)