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Object.assign vs Lodash.merge
(version: 0)
Measuring approaches performance
Comparing performance of:
Lodash Assing vs Native Assing
Created:
7 years ago
by:
Guest
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HTML Preparation code:
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.js"></script>
Script Preparation code:
var person = {name: 'Frederick', lastName: 'Corcino Alejo'};
Tests:
Lodash Assing
_.merge({}, person, {age: 15});
Native Assing
Object.assign({}, person, {age: 15});
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Lodash Assing
Native Assing
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what's being tested, compared, and their pros and cons. **Benchmark Definition** The benchmark compares two approaches for merging objects: `Object.assign` (native JavaScript method) and `_.merge` from the Lodash library. The objective is to measure the performance difference between these two methods. **Options Compared** Two options are compared: 1. **Native Assing (`Object.assign`)**: This is a built-in JavaScript function that assigns values from one or more source objects to a target object. 2. **Lodash Assing (`_.merge`)**: This method is part of the Lodash library, which provides a utility function for merging objects. **Pros and Cons** * **Native Assing (`Object.assign`)**: + Pros: Built-in JavaScript function, easy to understand, and widely supported across different browsers. + Cons: Can be slower than alternative methods, especially when dealing with large objects. * **Lodash Assing (`_.merge`)**: + Pros: Faster than native `Object.assign` for merging complex objects, provides a consistent interface across different JavaScript environments. + Cons: Requires an additional library (Lodash) to include in the project, and its performance may not be optimal when dealing with very large objects. **Library Used** The Lodash library is used as part of the benchmark. Lodash provides a utility function `_.merge()` that can merge two or more objects into one object. **Special JS Feature/Syntax** There are no special JavaScript features or syntaxes being tested in this benchmark. The focus is on comparing the performance of two different object merging methods. **Other Alternatives** If you need to compare other object merging methods, consider the following alternatives: * **`Object.assign()` with custom merge strategy**: Implement a custom merge function that can handle complex object structures and prioritize specific properties. * **`.concat()` method**: Use the `.concat()` method to merge arrays or objects. However, this approach may not be suitable for all use cases, especially when dealing with large objects. * **`_.merge()` from other libraries**: Consider using alternative library functions like `_.merge()` from Underscore.js or `merge()` from Ramda. In summary, the provided benchmark compares two common object merging methods: native `Object.assign()` and Lodash's `_.merge()`. The choice between these methods depends on your specific use case, performance requirements, and personal preference.
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