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#![no_std]
use core::fmt::{Display, Error, Formatter};
use derive_more::{AsMut, AsRef, Deref, DerefMut, From, IntoIterator};
use pipe_trait::Pipe;
#[derive(Debug, Clone, Copy, PartialEq, Eq, AsMut, AsRef, Deref, DerefMut, From, IntoIterator)]
pub struct FmtIter<Inner>(Inner)
where
Inner: Iterator + Clone,
<Inner as Iterator>::Item: Display;
impl<'a, Item> From<&'a [Item]> for FmtIter<core::slice::Iter<'a, Item>>
where
Item: Display + Clone,
{
fn from(inner: &'a [Item]) -> Self {
FmtIter(inner.iter())
}
}
impl<'a, Item, const LEN: usize> From<&'a [Item; LEN]> for FmtIter<core::slice::Iter<'a, Item>>
where
Item: Display + Clone,
{
fn from(inner: &'a [Item; LEN]) -> Self {
FmtIter::from(inner as &[Item])
}
}
impl<Inner> Display for FmtIter<Inner>
where
Inner: Iterator + Clone,
Inner::Item: Display,
{
fn fmt(&self, formatter: &mut Formatter<'_>) -> Result<(), Error> {
for item in self.clone() {
write!(formatter, "{}", item)?;
}
Ok(())
}
}
pub fn repeat<Value: Display + Clone>(
value: Value,
times: usize,
) -> FmtIter<impl Iterator<Item = Value> + Clone> {
value
.pipe(core::iter::repeat)
.take(times)
.pipe(FmtIter::from)
}