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isString
(version: 0)
Comparing performance of:
lodash vs native
Created:
5 years ago
by:
Guest
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HTML Preparation code:
<script type="text/javascript" src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
var email = 'winston@shipt.com'
Tests:
lodash
_.isString(email)
native
typeof email === 'string'
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:
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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 being tested in the benchmark. **Benchmark Definition** The benchmark is designed to measure the performance of two different approaches for checking if a string value exists: 1. **Native approach**: `typeof email === 'string'` 2. **Lodash library approach**: `_.isString(email)` **Options Compared** The two options being compared are: * Native JavaScript (using `typeof` and `===`) * Lodash library (a utility library that provides various helper functions) **Pros and Cons of Each Approach** 1. **Native approach**: * Pros: Lightweight, no dependencies required * Cons: May be slower due to type checking and boxing/unboxing operations 2. **Lodash library approach**: * Pros: Provides a standardized way to check string types, potentially faster due to caching and memoization * Cons: Requires an external dependency (Lodash), may introduce additional overhead **Library Used** The Lodash library is used in the benchmark. It provides a `_.isString()` function that checks if a value is a string. **Special JS Feature or Syntax** There are no special JavaScript features or syntax mentioned in this benchmark. **Other Alternatives** If you want to explore alternative approaches, here are some options: * **Using `instanceof String`**: This approach can be similar to the native approach but uses the `instanceof` operator instead of `typeof`. It may have similar performance characteristics. * **Using a custom implementation**: You could write your own function to check if a value is a string, potentially leading to better performance or control over the implementation. **Benchmark Preparation Code** The provided benchmark preparation code includes: * A variable `email` set to a string value * An HTML snippet that loads the Lodash library (only used in this specific benchmark) **Test Case 1: Lodash Library Approach** The first test case uses the Lodash library approach, which calls the `_isString()` function with the `email` value as an argument. **Test Case 2: Native Approach** The second test case uses the native JavaScript approach, which checks if the `email` variable is a string using the `typeof` and `===` operators.
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