45 lines
933 B
Rust
45 lines
933 B
Rust
//! Spline [`Iterator`], in a nutshell.
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//!
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//! You can iterate over a [`Spline<K, V>`]’s keys with the [`IntoIterator`] trait on
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//! `&Spline<K, V>`. This gives you iterated [`Key<K, V>`] keys.
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//!
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//! [`Spline<K, V>`]: crate::spline::Spline
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//! [`Key<K, V>`]: crate::key::Key
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use crate::{Key, Spline};
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/// Iterator over spline keys.
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///
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/// This iterator type is guaranteed to iterate over sorted keys.
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pub struct Iter<'a, T, V> where T: 'a, V: 'a {
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spline: &'a Spline<T, V>,
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i: usize
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}
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impl<'a, T, V> Iterator for Iter<'a, T, V> {
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type Item = &'a Key<T, V>;
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fn next(&mut self) -> Option<Self::Item> {
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let r = self.spline.0.get(self.i);
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if let Some(_) = r {
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self.i += 1;
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}
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r
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}
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}
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impl<'a, T, V> IntoIterator for &'a Spline<T, V> {
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type Item = &'a Key<T, V>;
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type IntoIter = Iter<'a, T, V>;
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fn into_iter(self) -> Self::IntoIter {
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Iter {
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spline: self,
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i: 0
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}
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}
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}
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