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| struct Gen { | |
| key: i32 | |
| } | |
| impl Iterator for Gen { | |
| type Item = u8; | |
| fn next(&mut self) -> Option<Self::Item> { | |
| self.key += 1; | |
| Some(( | |
| ((self.key+3*3)^17)%256 | |
| ) as u8) |