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use std::collections::hash_map::DefaultHasher; /// The hasher used to compare subscriptions. #[derive(Debug)] pub struct Hasher(DefaultHasher); impl Default for Hasher { fn default() -> Self { Hasher(DefaultHasher::default()) } } impl core::hash::Hasher for Hasher { fn write(&mut self, bytes: &[u8]) { self.0.write(bytes) } fn finish(&self) -> u64 { self.0.finish() } }