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array find vs some vs includes (no lodash)
(version: 0)
Compare the new ES6 spread operator with the traditional concat() method
Comparing performance of:
array some vs array includes vs array find
Created:
3 years ago
by:
Guest
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Tests:
array some
var a = ['hello', 'a', 'bc']; var b = a.some(item => item === 'bc');
array includes
var a = ['hello', 'a', 'bc']; var b = a.includes('bc');
array find
var a = ['hello', 'a', 'bc']; var b = a.find(item => item === 'bc');
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
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Test case name
Result
array some
array includes
array find
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the benchmark and explain what's being tested. The benchmark compares three different approaches to find an element in an array: `some()`, `includes()`, and `find()` with the new ES6 spread operator (`...`). **Array `some()`** The `some()` method returns `true` if at least one element in the array satisfies the provided condition. In this case, the condition is checking if any of the elements are equal to `'bc'`. The `some()` method uses a loop under the hood to iterate through the array. Pros: * Lightweight and efficient * Works well for small arrays Cons: * Can be slower than other methods for large arrays due to the overhead of the loop **Array `includes()`** The `includes()` method returns `true` if the array contains the specified element. In this case, it's checking if `'bc'` is an element in the array. Pros: * Fast and efficient, especially for large arrays * Works well with modern browsers that support it Cons: * Not supported in older browsers (e.g., Safari 16 on Mac OS X 10.15.7) * Can be slower than `find()` due to the overhead of searching the array **Array `find()` with new ES6 spread operator** The `find()` method returns the first element that satisfies the provided condition. In this case, it's using the spread operator (`...`) to iterate through the array and find an element equal to `'bc'`. Pros: * Fast and efficient * Works well for small arrays Cons: * Requires a modern browser that supports the new ES6 spread operator * Can be slower than `includes()` due to the overhead of iterating through the array **Other considerations** The benchmark does not include other approaches, such as using `forEach()` or a custom loop. This is because these methods are less efficient and less concise than the ones being compared. **Library usage** None of the test cases use any external libraries besides the built-in JavaScript `Array` methods. **Special JS feature/syntax** The benchmark uses the new ES6 spread operator (`...`) in one of the test cases, which is a modern JavaScript syntax. This is not required for older browsers or environments that don't support it. **Alternatives** Other alternatives for finding an element in an array include: * `every()` instead of `some()` * `indexOf()` or `lastIndexOf()` instead of `includes()` * Using a custom loop or `forEach()` with a callback function * Using a library like Lodash or Ramda, which provide additional functionality for working with arrays. Note that these alternatives may have different performance characteristics and trade-offs compared to the methods being tested in this benchmark.
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