Add imports in tag_hash macro
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c1a64d6c33
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@ -22,6 +22,8 @@
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#[macro_export]
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macro_rules! tag_hash {
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($tag:ident) => {{
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use std::collections::hash_map::DefaultHasher;
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use std::hash::Hasher;
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let mut hasher = DefaultHasher::new();
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hasher.write($tag.as_bytes());
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hasher.finish()
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