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Lodash Get vs Native
(version: 0)
Comparing performance of:
Native non-greedy lookup. vs Lodash get based non-greedy lookup.
Created:
6 years ago
by:
Registered User
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HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
function nativeNonGreedyLookup() { const obj = { firstLevel: { secondLevel: { thirdLevel: 'test' } } }; let thirdLevel; if ( obj && obj.firstLevel && obj.firstLevel.secondLevel && obj.firstLevel.secondLevel.thirdLevel ) { thirdLevel = obj.firstLevel.secondLevel.thirdLevel; } return thirdLevel; } function lodashNonGreedyLookup() { const obj = { firstLevel: { secondLevel: { thirdLevel: 'test' } } }; const thirdLevel = _.get(obj, 'firstLevel.secondLevel.thirdLevel', 'unknown'); return thirdLevel; }
Tests:
Native non-greedy lookup.
nativeNonGreedyLookup();
Lodash get based non-greedy lookup.
lodashNonGreedyLookup();
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Native non-greedy lookup.
Lodash get based non-greedy lookup.
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark JSON and discuss what's being tested, compared options, pros and cons of each approach, library usage, special JavaScript features, and other considerations. **What is tested on the provided JSON?** The benchmark tests two approaches for non-greedy lookup in a nested object: native implementation using `if` statements and Lodash's `_get` method. The test cases use a specific object structure to demonstrate both approaches. **Options compared:** * Native implementation (using `if` statements): This approach uses a straightforward, iterative way to access the desired value. * Lodash's `_get` method: This is a utility function from the Lodash library that provides a more functional and concise way to access nested object properties. **Pros and Cons of each approach:** * Native implementation: + Pros: - Typically faster since it doesn't rely on external libraries or functions. - Can be easily understood by developers familiar with JavaScript's syntax. + Cons: - More verbose and error-prone, as it requires explicit checks for object existence and property access. * Lodash's `_get` method: + Pros: - Concise and readable, making it easier to understand and maintain. - Reduces the chance of errors due to its built-in checks and fallbacks. + Cons: - Relying on an external library may introduce performance overhead or dependency issues. - May not be as performant as a native implementation, especially in cases where object structure is complex. **Library usage:** The Lodash library is used for its `_get` method, which provides a convenient and efficient way to access nested object properties. The library is included in the benchmark using the provided HTML preparation code. **Special JavaScript features (not mentioned):** None explicitly mentioned, but note that this benchmark doesn't use any experimental or esoteric JavaScript features. **Other considerations:** * Performance: The benchmark measures execution speed per second for both approaches. * Code readability and maintainability: Lodash's `_get` method is generally more readable and concise than the native implementation. * Dependency on external libraries: Using an external library like Lodash introduces potential performance overhead or dependency issues, which may be a consideration in certain environments. **Other alternatives:** If you're looking for alternative non-greedy lookup methods, consider: * Using `in` operator with `typeof` to check if the property exists and its type matches the expected value. * Employing a recursive approach using `if` statements or a loop. * Leveraging modern JavaScript features like optional chaining (`?.`) and nullish coalescing (`??`) for more concise expressions. Keep in mind that these alternatives may not offer the same performance as the native implementation or Lodash's `_get` method.
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