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array includes vs object key lookup with text
(version: 0)
with text lookup
Comparing performance of:
includes vs lookup
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var a = ['test', 'my', 'thisisaverylongentryand has to be checked completely', 'alsotest', 'anotherone', 'andanotherone', 'andanotherone2', 'test2', 'mytest2', 'finally']; var b = { 'test': {}, 'my': {}, 'thisisaverylongentryand has to be checked completely': {}, 'alsotest': {}, 'anotherone': {}, 'andanotherone': {}, 'andanotherone2': {}, 'test2': {}, 'mytest2': {}, 'finally': {} };
Tests:
includes
return a.includes('finally')
lookup
return b['finally']
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
includes
lookup
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 benchmark and its test cases. **Benchmark Purpose** The benchmark measures the performance difference between two approaches: array `includes` method and object key lookup (`b['key']`) with string values. The goal is to determine which approach is faster for this specific use case. **Options Compared** There are only two options being compared: 1. **Array `includes` method**: This method takes a value as an argument and returns a boolean indicating whether the value exists in the array. 2. **Object key lookup (`b['key']`) with string values**: This approach uses the bracket notation to access a property by its name, similar to how you would access a property of an object. **Pros and Cons** * **Array `includes` method**: + Pros: Easy to implement, widely supported, and works for arrays of any data type. + Cons: May be slower than object key lookup for large datasets due to the overhead of iterating over the array. * **Object key lookup (`b['key']`) with string values**: + Pros: Can be faster than `includes` method for large datasets, as it directly accesses a property without iteration. + Cons: May not work for arrays or objects that don't have exact matches. **Library** The benchmark uses the built-in JavaScript methods (`a.includes()` and `b['key']`) to compare the performance of these two approaches. No external libraries are required. **Special JS Feature/Syntax** There is no special JavaScript feature or syntax used in this benchmark. **Other Considerations** When interpreting the results, it's essential to consider the following: * The benchmark was run on a specific device (Desktop, Windows 10) with a particular browser (Chrome 112). * The number of executions per second (ExecutionsPerSecond) is provided for each test case. * A higher value indicates better performance. **Alternatives** If you want to explore alternative approaches or libraries, consider the following: * **NativeArray methods**: Instead of using `includes`, you could use native array methods like `findIndex()` or `some()`. * **Object keys with other data types**: You could test object key lookup with different data types (e.g., numbers, booleans) to see if the performance difference holds up. * **Other browsers or devices**: Run the benchmark on different platforms and browsers to ensure the results are not specific to a particular setup. Keep in mind that these alternatives may alter the purpose of the original benchmark.
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