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205 let mut rng = rand::thread_rng(); |
205 let mut rng = rand::thread_rng(); |
206 for _ in 0..ID_LENGTH { |
206 for _ in 0..ID_LENGTH { |
207 // One random hexadecimal digit. |
207 // One random hexadecimal digit. |
208 // `unwrap` never panics because `impl Write for String` |
208 // `unwrap` never panics because `impl Write for String` |
209 // never returns an error. |
209 // never returns an error. |
210 write!(&mut id, "{:x}", rng.gen_range(0, 16)).unwrap(); |
210 write!(&mut id, "{:x}", rng.gen_range(0..16)).unwrap(); |
211 } |
211 } |
212 id |
212 id |
213 } |
213 } |
214 |
214 |
215 pub fn serialize( |
215 pub fn serialize( |