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Object values Length vs Lodash Size 100k
(version: 0)
Comparing performance of:
Length vs Lodash Size
Created:
2 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.min.js'></script>
Script Preparation code:
var arr = new Array(100000).fill(""); var obj = {}; for (const key of arr) { obj[key] = "foo"; }
Tests:
Length
Object.keys(obj).length
Lodash Size
_.size(obj);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Length
Lodash Size
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 JSON data and explain what is tested on MeasureThat.net. **Benchmark Definition** The benchmark measures two different ways to get the length of an object in JavaScript: 1. **Native JavaScript approach**: `Object.keys(obj).length` This method uses the built-in `Object.keys()` function to get an array of keys from the object, and then returns the length of that array. 2. **Lodash approach**: `_.size(obj)` This method uses the Lodash library's `_size` function to calculate the size of the object. **Options Compared** The two options being compared are: * Native JavaScript approach (`Object.keys(obj).length`) * Lodash approach (`_.size(obj)`) **Pros and Cons** **Native JavaScript Approach** Pros: * Built-in function, no external dependency * Can be faster since it doesn't require a library call Cons: * May not work in older browsers or environments that don't support `Object.keys()` * Requires manual loop to iterate over keys (less efficient than Lodash's optimized implementation) **Lodash Approach** Pros: * Optimized for performance by Lodash team * Works in most modern browsers and environments * Easier to read and maintain, as it uses a standardized function call Cons: * External dependency on Lodash library * May introduce overhead due to library call and potential caching issues **Library: Lodash** Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, object transformation, and more. The `_size` function in this benchmark measures the size of an object by counting its keys. **Special JS Feature or Syntax** There isn't any special JavaScript feature or syntax being used in this benchmark. However, it's worth noting that `Object.keys()` was introduced in ECMAScript 5 (ES5), which means older browsers may not support it. **Other Alternatives** If you want to measure the length of an object without using a library like Lodash, you could consider: * Using the `_Object.keys()` polyfill or other workarounds for older browsers * Implementing your own manual loop to iterate over keys (less efficient than Lodash's optimized implementation) * Using other libraries or frameworks that provide similar functionality Keep in mind that MeasureThat.net is designed to test performance and execution speed, so you may want to consider using a consistent approach across all benchmarks.
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