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JSON stringification versus simple map
(version: 0)
https://stackoverflow.com/a/55147377/1243641
Comparing performance of:
map.map vs JSON.stringify
Created:
7 years ago
by:
Registered User
Go to the latest result
Script Preparation code:
var xs = [ [' ','0','1','2','3','4','5','6','7','8','9'], ['A','a','B','b','C','c','D','d','E','e',';'], ['Â','â','F','f','G','g','H','h','Ê','ê',':'], ['À','à','I','i','J','j','K','k','È','è','.'], ['L','l','Î','î','M','m','N','n','É','é','?'], ['O','o','Ï','ï','P','p','Q','q','R','r','!'], ['Ô','ô','S','s','T','t','U','u','V','v','“'], ['W','w','X','x','Y','y','Ù','ù','Z','z','”'], ['@','&','#','[','(','/',')',']','+','=','-'], ];
Tests:
map.map
xs.map(a => a.join('')).join('')
JSON.stringify
JSON.stringify(xs)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
map.map
JSON.stringify
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
3 months ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
Browser/OS:
Chrome 147 on Mac OS X 10.15.7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=627952" width="100%" height="500px"></iframe>
JSON.stringify
1.8M/s
map.map
1.2M/s
View exact numbers
Test name
Executions per second
✓
JSON.stringify
1,777,706 Ops/sec
map.map
1,182,336 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the benchmark test for you. **Benchmark Definition** The benchmark tests two different approaches to create an array of strings in JavaScript: 1. Using the `map()` method and then calling `join()` on each element: ```javascript xs.map(a => a.join('')).join('') ``` 2. Using `JSON.stringify()` with the array as an argument: ```javascript JSON.stringify(xs) ``` **Options Compared** The benchmark compares the performance of two options: * **Option 1**: Using `map()` and then calling `join()` * **Option 2**: Using `JSON.stringify()` **Pros and Cons** Here are some pros and cons of each approach: **Option 1: map() + join()** Pros: * More readable and maintainable code * Can be used to create arrays of strings with complex formatting Cons: * Requires the use of `join()` which can be slower than a simple string concatenation * May not be suitable for very large datasets due to memory constraints **Option 2: JSON.stringify()** Pros: * Fast and efficient, as it uses a optimized C++ implementation under the hood * Can create arrays of strings with complex formatting without requiring explicit join() Cons: * Less readable and maintainable code * May not be suitable for creating arrays of simple strings (e.g., individual characters) **Library: JSON** `JSON.stringify()` is a built-in JavaScript function that converts a JavaScript object or array to a JSON string. It's used here to test the performance of serializing an array of strings. **Special JS Feature/Syntax: None** There are no special features or syntax used in this benchmark that would require additional explanation. **Other Alternatives** If you want to create arrays of strings, you may also consider using: * `Array.prototype.reduce()`: A method that applies a reduction function to each element of an array. * `String.prototype.repeat()`: A method that repeats a string for a specified number of times. * Custom loops or recursive functions: Depending on the specific requirements of your use case. Keep in mind that these alternatives may have different performance characteristics compared to the approaches tested in this benchmark.
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