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for loop vs. lodash range foreach [2022-11-17]
(version: 0)
Comparing performance of:
for vs lodash range foreach vs array foreach vs array lodash foreach vs lodash range lodash foreach
Created:
3 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>
Tests:
for
var x = 0; for (var i = 0; i < 10000; i++) { x++; }
lodash range foreach
var x = 0; _.range(10000).forEach(function (i) { x++; });
array foreach
var x = 0; Array(10000).forEach(function (i) { x++; });
array lodash foreach
var x = 0; _.forEach(Array(10000), function (i) { x++; });
lodash range lodash foreach
var x = 0; _.forEach(_.range(10000), function (i) { x++; });
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (5)
Previous results
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Test case name
Result
for
lodash range foreach
array foreach
array lodash foreach
lodash range lodash foreach
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 and its test cases. **Benchmark Overview** MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The provided benchmark compares four different approaches for iterating over arrays: traditional `for` loops, `_.range()` from Lodash, and two variants of `_.forEach()` with arrays as the first argument. **Test Cases** 1. **For Loop**: This test case uses a traditional `for` loop to iterate over an array of 10,000 elements. 2. **Lodash Range ForEach**: This test case uses the `_.range()` function from Lodash to generate an array of 10,000 elements and then iterates over it using `_.forEach()`. 3. **Array Foreach**: This test case creates an array of 10,000 elements and then iterates over it using the `forEach()` method. 4. **Lodash Array ForEach**: This test case uses the `_` object from Lodash to access the `forEach()` method on arrays, and then iterates over a generated array of 10,000 elements using `_.forEach()`. 5. **Lodash Range Lodash ForEach**: This test case is similar to the previous one but uses `_.range()` as the first argument to `_.forEach()`. **Options Compared** The four test cases are compared in terms of their performance. The results show that: * Traditional `for` loops (Test Case 1) are generally faster than using `_.range()` from Lodash (Test Cases 2-3). * Using arrays as the first argument to `_.forEach()` (Test Cases 4 and 5) is slower than traditional `for` loops. * The order of operations within the `_.forEach()` method does not significantly impact performance. **Pros and Cons** Here are some pros and cons of each approach: * Traditional `for` loops: + Pros: generally faster, more explicit control over iteration + Cons: verbose, may be less readable for complex iterations * Lodash `_.range()`: provides a convenient way to generate arrays of numbers, but may incur overhead due to function calls. * Array `forEach()` method: + Pros: concise and readable syntax, easy to use with existing code + Cons: generally slower than traditional `for` loops or optimized Lodash methods **Lodash Library** The `_` object from Lodash is a utility library that provides various functions for working with JavaScript data structures. In this benchmark, it's used to generate arrays of numbers using `_.range()` and provide an alias for the `forEach()` method on arrays. **Special JS Features or Syntax** None mentioned in the provided benchmark. **Other Alternatives** If you're looking for alternatives to the traditional `for` loop or optimized Lodash methods, here are a few options: * Using `Array.prototype.forEach()`: similar to the Array `forEach()` method used in Test Case 3. * Using `while` loops: can be faster than traditional `for` loops for certain types of iterations. * Using V8-specific features like `for...of` or `for...in`: may provide performance benefits, but are not supported in all browsers. Keep in mind that the performance differences between these alternatives may vary depending on the specific use case and JavaScript engine.
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