public static bool TryGet <TKey, TValue>(this LightningTransaction txn, LightningDatabase db, TKey key, out TValue value)
{
GetByOperation operation;
var result = txn.TryGetBy(db, key, out operation);
value = result
? operation.Value <TValue>()
: default(TValue);
return(result);
}
/// <summary>
/// Tries obtaining a value by key
/// </summary>
/// <typeparam name="TKey">Type of a key.</typeparam>
/// <param name="txn">A transaction.</param>
/// <param name="key">Key.</param>
/// <param name="value">Obtained value converter if successful.</param>
/// <returns>Returns true if key-value pair exists in database or false if not.</returns>
public static bool TryGetBy <TKey>(this LightningTransaction txn, TKey key, out GetByOperation value)
{
return(txn.TryGetBy(key, out value));
}
