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1 vs 2
(version: 0)
Comparing performance of:
... vs assign vs modify
Created:
5 years ago
by:
Guest
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Tests:
...
const firstObject = { sampleData: 'Hello world', sampleData1: 'Hello world', sampleData2: 'Hello world', sampleData3: 'Hello world' }; const searchMatched = true; const searchActive = false; const activeIndex = 10; const finalObject = { ...firstObject, searchMatched, searchActive, activeIndex };
assign
const firstObject = { sampleData: 'Hello world', sampleData1: 'Hello world', sampleData2: 'Hello world', sampleData3: 'Hello world' }; const searchMatched = true; const searchActive = false; const activeIndex = 10; const finalObject = Object.assign(firstObject, { searchMatched, searchActive, activeIndex });
modify
const firstObject = { sampleData: 'Hello world', sampleData1: 'Hello world', sampleData2: 'Hello world', sampleData3: 'Hello world' }; const searchMatched = true; const searchActive = false; const activeIndex = 10; firstObject.searchMatched = searchMatched; firstObject.searchActive = searchActive; firstObject.activeIndex = activeIndex;
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Suite status:
<idle, ready to run>
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Test case name
Result
...
assign
modify
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the benchmark and its options for you. **Benchmark Overview** MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The provided JSON represents a benchmark with three test cases, each testing different approaches to creating a final object by merging or modifying an initial object. **Options Compared** The benchmark compares the performance of three different approaches: 1. **Shorthand Object Notation (JSON)**: This approach uses shorthand notation (`const finalObject = { ...firstObject, searchMatched, searchActive, activeIndex }`). 2. **Object Assign**: This approach uses `Object.assign()` to merge two objects (`const finalObject = Object.assign(firstObject, { searchMatched, searchActive, activeIndex });`). 3. **Property Assignment**: This approach modifies the initial object directly (`firstObject.searchMatched = searchMatched; firstObject.searchActive = searchActive; firstObject.activeIndex = activeIndex;`). **Pros and Cons** * **Shorthand Object Notation (JSON)**: + Pros: concise, readable, and easy to write. + Cons: may be slower due to the overhead of parsing JSON strings at runtime. * **Object Assign**: + Pros: efficient, as it uses a native method for merging objects. + Cons: may require additional setup or imports (e.g., `const assign = Object.assign;`). * **Property Assignment**: + Pros: simple and direct, with minimal overhead. + Cons: may be slower due to the repeated property assignments. **Library and Special JS Features** The benchmark uses a custom library (`assign`) for the Object Assign approach. There is no special JavaScript feature or syntax used in this benchmark. **Other Considerations** When writing microbenchmarks like this, consider the following: * Keep your benchmark code simple and focused on the specific test case. * Use clear and concise language to describe the benchmark's purpose. * Make sure to include relevant metadata (e.g., device platform, operating system) for accurate results. * Regularly update your benchmarks with new versions of JavaScript and browser engines to ensure relevance. **Alternatives** If you need alternatives or variations on this benchmark, consider: * Using different JavaScript engines (e.g., V8, SpiderMonkey) * Adding additional properties or complexity to the initial object * Experimenting with other merging methods (e.g., spread operator, `Object.assign()` with a custom function) Feel free to ask if you have any further questions!
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