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Extract search of digest item into Digest::log() function (#874)

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* Digest::log fn

* change DigestItem::log impl
This commit is contained in:
Svyatoslav Nikolsky
2018-10-05 15:17:00 +03:00
committed by Gav Wood
parent 187c232629
commit 200a716a1a
4 changed files with 10 additions and 10 deletions
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substrate/core/client/db/src/lib.rs
+1 -3
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@@ -374,9 +374,7 @@ impl<Block: BlockT> state_machine::ChangesTrieRootsStorage<Blake2Hasher> for DbC
.map(Some),
None => Ok(None)
})?
.and_then(|header| header.digest().logs().iter()
.find(|log| log.as_changes_trie_root().is_some())
.and_then(DigestItem::as_changes_trie_root)
.and_then(|header| header.digest().log(DigestItem::as_changes_trie_root)
.map(|root| H256::from_slice(root.as_ref()))))
}
}