21 lines
395 B
Rust
21 lines
395 B
Rust
#[derive(Copy, Clone, Default, PartialEq, Debug)]
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pub struct Accu {
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state: i32,
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step: i32,
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}
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impl Accu {
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pub fn new(state: i32, step: i32) -> Self {
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Self { state, step }
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}
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}
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impl Iterator for Accu {
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type Item = i32;
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fn next(&mut self) -> Option<i32> {
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let s = self.state;
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self.state = self.state.wrapping_add(self.step);
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Some(s)
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}
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}
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