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Native !!collection?.length vs Lodash's !isEmpty
(version: 0)
Comparing performance of:
native undefined vs isEmpty undefined vs native array vs isEmpty array
Created:
5 years ago
by:
Registered User
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HTML Preparation code:
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.core.js"></script>
Script Preparation code:
var collection1 = undefined var collection2 = [1, 2, 3] var isEmpty = _.isEmpty
Tests:
native undefined
!!(null === collection1 || void 0 === collection1 ? void 0 : collection1.length)
isEmpty undefined
!isEmpty(collection1)
native array
!!(null === collection2 || void 0 === collection2 ? void 0 : collection2.length)
isEmpty array
!isEmpty(collection2)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
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Test case name
Result
native undefined
isEmpty undefined
native array
isEmpty array
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the provided benchmark JSON and explain what's being tested, compared, and some pros and cons of each approach. **Benchmark Definition** The benchmark is comparing two approaches to check if an object or array has a length property: 1. **Native Approach**: `!!(null === collection || void 0 === collection ? void 0 : collection.length)` 2. **Lodash Approach**: `!isEmpty(collection)` **Library: Lodash** Lodash is a popular JavaScript library that provides a wide range of utility functions, including the `isEmpty` function. **Native Approach** The native approach uses the `!!` operator to convert the boolean result of the conditional expression to a truthy or falsy value. This allows for a more concise and expressive way to check if an object is null, undefined, or has a non-zero length. Pros: * Concise and easy to read * Works well with both objects and arrays Cons: * May be less performant than the Lodash approach due to the overhead of converting boolean values * Requires careful handling of null and undefined cases to avoid errors **Lodash Approach** The Lodash approach uses the `isEmpty` function to check if an object or array is empty. Pros: * More explicit and self-documenting code * No need to worry about null and undefined cases Cons: * May be less concise than the native approach * Requires importing the Lodash library, which may add overhead **Other Considerations** When comparing these two approaches, it's essential to consider the following factors: * **Null and undefined handling**: Both approaches require careful handling of null and undefined cases to avoid errors. The native approach uses a conditional expression, while the Lodash approach relies on the `isEmpty` function. * **Performance**: The Lodash approach may be less performant than the native approach due to the overhead of converting boolean values. **Individual Test Cases** Each test case is comparing the performance of the native and Lodash approaches for different inputs: 1. **native undefined**: Compares the performance of `!!(null === collection || void 0 === collection ? void 0 : collection.length)` with null and undefined values. 2. **isEmpty undefined**: Compares the performance of `!isEmpty(collection)` with an undefined value. 3. **native array**: Compares the performance of `!!(null === collection || void 0 === collection ? void 0 : collection.length)` with a non-empty array. 4. **isEmpty array**: Compares the performance of `!isEmpty(collection)` with a non-empty array. **Alternatives** Other alternatives to these approaches include: * Using a library like `check-types` or `type-checker` to perform type checking and error handling * Implementing custom logic for null, undefined, and empty checks * Using a more modern JavaScript feature, such as the optional chaining operator (`?.`)
Related benchmarks:
lodash.size vs lodash.keys
Native array length vs Lodash's isEmpty
Native !!collection?.length wrapped vs Lodash's !isEmpty
Comparing performance of native .length and Lodash _.isEmpty v2
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