egglog-ast 3.0.0

egglog is a language that combines the benefits of equality saturation and datalog. It can be used for analysis, optimization, and synthesis of programs. It is the successor to the popular rust library egg.
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use std::fmt::Display;

pub struct ListDisplay<'a, TS>(pub TS, pub &'a str);

impl<TS> Display for ListDisplay<'_, TS>
where
    TS: Clone + IntoIterator,
    TS::Item: Display,
{
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        let mut did_something = false;
        for item in self.0.clone().into_iter() {
            if did_something {
                f.write_str(self.1)?;
            }
            Display::fmt(&item, f)?;
            did_something = true;
        }
        Ok(())
    }
}