OCLOperators dictionary
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dictionary(loopvar| ExpressionForKeyDefinition , ExpressionForLookUpInDictionary ) | dictionary(loopvar| ExpressionForKeyDefinition , ExpressionForLookUpInDictionary ) | ||
When you need to iterate over two lists to match on some common attribute, a dictionary will greatly reduce the work performed by the CPU. | When you need to iterate over two lists to match on some common attribute, a dictionary will greatly reduce the work performed by the CPU if the list is read more than written. | ||
# Dictionaries in OCL use a hash table implementation, which means that it can provide fast lookups of objects based on a value. This is because the hash function can map the key to a unique index in the table, allowing for constant-time access to the value associated with that key. | |||
# A dictionary helps to reduce the time of searching for a particular value in a collection. Instead of searching through the entire collection, the dictionary can perform a hash lookup to quickly locate the desired value. | |||
Overall, using a dictionary in OCL can improve performance by providing fast lookup and efficient searching. | |||
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Revision as of 14:34, 6 April 2023
dictionary(loopvar| ExpressionForKeyDefinition , ExpressionForLookUpInDictionary )
When you need to iterate over two lists to match on some common attribute, a dictionary will greatly reduce the work performed by the CPU if the list is read more than written.
- Dictionaries in OCL use a hash table implementation, which means that it can provide fast lookups of objects based on a value. This is because the hash function can map the key to a unique index in the table, allowing for constant-time access to the value associated with that key.
- A dictionary helps to reduce the time of searching for a particular value in a collection. Instead of searching through the entire collection, the dictionary can perform a hash lookup to quickly locate the desired value.
Overall, using a dictionary in OCL can improve performance by providing fast lookup and efficient searching.
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