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Lodash pick vs manual object descturct9
(version: 0)
Comparing performance of:
Lodash vs Object desctruct vs Optimization1
Created:
3 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:
var images = { "1280x1840_480": { "downloadUrl": "https://static.manta.net/2022-07-20/C3/C3PgwSGN2kE1BQQh.jpg", "data": { "blurhash": "UjIO2.IoyCRP~pjFxuW=%Mxue.xu%MWUNGs:", "height": 690, "width": 480 } }, "1280x1840_720": { "downloadUrl": "https://static.manta.net/2022-07-20/Lr/LrbiRJxUnwT5Trs5.jpg", "data": { "blurhash": "UjIO2-IoyCRP~pjF%2W=%MxujFxu%MaxNGs:", "height": 1035, "width": 720 } } }
Tests:
Lodash
const n = Object.keys(images || {}) .reduce((obj, key) => ({ ...obj, [key]: { ..._.pick(images[key], ['downloadUrl', 'id']), blurhash: images[key].data?.blurhash, }, }), {});
Object desctruct
const n = Object.keys(images || {}) .reduce((obj, key) => ({ ...obj, [key]: { downloadUrl: images[key].downloadUrl, id: images[key].id, blurhash: images[key].data?.blurhash, }, }), {});
Optimization1
const n = Object.keys(images || {}) .reduce((obj, key) => { obj[key] = { downloadUrl: images[key].downloadUrl, id: images[key].id, blurhash: images[key].data?.blurhash, } return obj; }, {});
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
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Test case name
Result
Lodash
Object desctruct
Optimization1
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Measuring JavaScript performance is an essential task in software development, and tools like MeasureThat.net help users compare the efficiency of different approaches. In this case, we have three test cases: 1. **Lodash**: The benchmark uses Lodash's `pick` function to extract specific properties from the `images` object. 2. **Object destructuring**: This approach directly extracts properties from the `images` object using object destructuring syntax (`const { downloadUrl, id, blurhash } = images[key]`). 3. **Optimization 1** (manual object desctruct): This approach also uses a manual object destructuring technique, but with a different implementation. Let's analyze each approach: ### Lodash Lodash provides a convenient way to extract specific properties from an object using the `pick` function. This approach is often faster than manual object destructuring because it avoids unnecessary computations and directly returns the desired subset of properties. Pros: * Convenient and easy to use * Avoids manual property iteration * Often faster than manual destructuring Cons: * Additional dependency on Lodash library * May have performance overhead due to function call ### Object destructuring This approach uses object destructuring syntax to extract specific properties from the `images` object. It's a straightforward and efficient way to access individual properties. Pros: * Fast and lightweight * No additional dependencies or overhead * Easy to understand and implement Cons: * Requires manual property iteration, which can be error-prone if not done correctly * May require more lines of code compared to Lodash's `pick` function ### Optimization 1 (manual object desctruct) This approach uses a manual object destructuring technique without relying on JavaScript's built-in syntax. It's often used when performance is critical, and the overhead of JavaScript's features should be avoided. Pros: * Can be highly optimized for performance * Avoids dependencies on JavaScript libraries or features Cons: * Requires manual property iteration and careful implementation to avoid errors * May require more lines of code compared to Lodash's `pick` function or object destructuring syntax In general, the choice between these approaches depends on your specific use case, performance requirements, and personal preference. If you need a convenient and easy-to-use solution, Lodash's `pick` function might be the best choice. For simple cases where performance is not critical, object destructuring syntax can be sufficient. In performance-critical scenarios or when manual optimization is required, Optimization 1 (manual object desctruct) may be the best option. As for other alternatives, you could consider: * Using a library like `underscore` instead of Lodash * Implementing a custom solution using native JavaScript functions (e.g., `for...in`, `Object.keys()`) * Using a different programming paradigm, such as functional programming with immutability However, these alternatives may not provide the same level of convenience or performance as Lodash's `pick` function or object destructuring syntax.
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