cl_typeck/format_utils.rs
pub use cl_ast::format::*;
use std::{fmt, iter};
/// Separates the items yielded by iterating the provided function
pub const fn separate<'f, 's, Item, F, W>(
sep: &'s str,
t: F,
) -> impl FnOnce(W) -> fmt::Result + 's
where
Item: FnMut(&mut W) -> fmt::Result,
F: FnMut() -> Option<Item> + 's,
W: fmt::Write,
{
move |mut f| {
for (idx, mut disp) in iter::from_fn(t).enumerate() {
if idx > 0 {
f.write_str(sep)?;
}
disp(&mut f)?;
}
Ok(())
}
}