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lodash isFunction vs native
(version: 0)
Comparing performance of:
_lodash vs native
Created:
5 years ago
by:
Guest
Go to the latest result
HTML Preparation code:
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.core.js"></script>
Tests:
_lodash
_.isFunction(console.log); _.isFunction(setTimeout);
native
typeof console.log === "function" ? true : false typeof setTimeout === "function" ? true : false
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
_lodash
native
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3.1 Safari/605.1.15
Browser/OS:
Safari 18 on Mac OS X 10.15.7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=610139" width="100%" height="500px"></iframe>
native
312.9M/s
_lodash
21.3M/s
View exact numbers
Test name
Executions per second
✓
native
312,871,232 Ops/sec
_lodash
21,262,420 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and its test cases. **Benchmark Definition** The benchmark is comparing two approaches: 1. **_.isFunction(console.log)**: This is using the `lodash` library to check if `console.log` is a function. Lodash is a popular JavaScript utility library that provides a wide range of functions for various tasks, including string manipulation, array manipulation, and more. 2. **typeof console.log === "function" ? true : false**: This is using the built-in `typeof` operator to check if `console.log` is a function. **Options Compared** The benchmark is comparing two options: * Using Lodash's `isFunction()` function to check if a value is a function. * Using the `typeof` operator to check if a value is a function. **Pros and Cons of Each Approach** 1. **_.isFunction(console.log)**: * Pros: Lodash provides a more explicit way to check for functions, which can be beneficial in certain situations (e.g., debugging). * Cons: It introduces an external dependency on the `lodash` library, which may not be desirable for all use cases. 2. **typeof console.log === "function" ? true : false**: * Pros: This approach is lightweight and doesn't introduce any external dependencies. * Cons: It requires a more complex expression to check if a value is a function. **Library and Purpose** In this benchmark, the `lodash` library is used to provide a convenient way to check if a value is a function. Lodash's `isFunction()` function is specifically designed to check if a value is a function or not. **Special JS Feature/ Syntax** There are no special JavaScript features or syntax used in these test cases that would be unfamiliar to most software engineers. **Other Alternatives** If you wanted to implement this benchmark without using the `lodash` library, you could use the following alternative: * Use a simple implementation of the `isFunction()` function: ```javascript function isFunction(value) { return typeof value === 'function'; } ``` This implementation uses the same `typeof` operator as the second test case but encapsulates it in a reusable function. Alternatively, if you wanted to use a more lightweight approach without using any external libraries, you could use: * Using a polyfill for the `typeof` operator: ```javascript var isFunction = function(value) { return typeof value === 'function'; }; ``` However, this approach would still require some code duplication and may not be as efficient as the original benchmark. Overall, the benchmark provides a useful comparison between two approaches to checking if a value is a function. By using Lodash's `isFunction()` function, developers can take advantage of a convenient and explicit way to perform this check. However, for lighter-weight use cases or those without external dependencies, using the `typeof` operator directly may be a more suitable option.
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