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use super::Operator;
/// [`Map`] operator.
#[derive(Debug, Clone, Copy)]
pub struct Map<F> {
pub(super) f: F,
}
/// Create a [`Map`] operator.
pub fn map<I, O, F>(f: F) -> Map<F>
where
F: FnMut(I) -> O,
{
Map { f }
}
impl<I, O, F> Operator<I> for Map<F>
where
F: FnMut(I) -> O,
{
type Output = O;
fn next(&mut self, input: I) -> Self::Output {
(self.f)(input)
}
}