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Add TransactionalTree::contains_key, matching Tree::contains_key #1433

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Add TransactionalTree::contains_key, matching Tree::contains_key #1433

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8 changes: 8 additions & 0 deletions src/transaction.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -311,6 +311,14 @@ impl TransactionalTree {
Ok(get)
}

/// Check if there is a value associated with the specified key
pub fn contains_key<K: AsRef<[u8]>>(
&self,
key: K,
) -> UnabortableTransactionResult<bool> {
self.get(key).map(|v| v.is_some())
}

/// Atomically apply multiple inserts and removals.
pub fn apply_batch(
&self,
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