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test normal vs spread
(version: 0)
Comparing performance of:
normal vs spread
Created:
2 years ago
by:
Guest
Jump to the latest result
Tests:
normal
const ret = { a: '1', b: '2', c: '3', };
spread
const ret = { ...{a: '1'}, ...{b: '2'}, ...{c: '3'} }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
normal
spread
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the explanation for you. **Benchmark Definition JSON and Benchmark Preparation Code** The provided benchmark definition is a simple JavaScript object that defines two test cases: 1. `normal`: This test case uses an object literal syntax to create an object with three properties: `a`, `b`, and `c`. The value of each property is hardcoded as a string. 2. `spread`: This test case uses the spread operator (`...`) to create an object from individual objects. In this case, it takes three separate objects `{a: '1'}`, `{b: '2'}`, and `{c: '3'}` and merges them into one using the spread operator. The Script Preparation Code and Html Preparation Code fields are empty, which means that no additional setup is required for these tests. This is likely because the tests only involve creating simple objects and comparing their performance. **Options Compared** In this benchmark, two options are compared: 1. **Object Literal Syntax**: The `normal` test case uses a traditional object literal syntax to create an object. 2. **Spread Operator**: The `spread` test case uses the spread operator to create an object from individual objects. **Pros and Cons of Each Approach** * **Object Literal Syntax (Normal)**: + Pros: Simple, easy to understand, and widely supported by most JavaScript engines. + Cons: May be slower than using the spread operator due to the overhead of creating a new object. * **Spread Operator (Spread)**: + Pros: Allows for more flexibility when creating objects with multiple properties. Can also reduce code duplication. + Cons: Requires understanding of the spread operator syntax, which may not be familiar to all developers. **Library and Syntax Used** Neither test case uses any external libraries or special JavaScript features beyond the standard syntax used in modern JavaScript. **Alternative Approaches** Other alternatives could include: 1. Using a library like Lodash to create objects with multiple properties. 2. Using a different object creation method, such as using `Object.assign()` or the `new Object()` constructor. 3. Creating an array of objects and then using the spread operator to merge them into one. However, these alternatives are not part of the original benchmark definition and would likely require significant changes to the test cases. **Device Platform and Browser** The latest benchmark result shows that Chrome 116 on a Desktop device platform achieved: * `ExecutionsPerSecond`: 1002140416.0 for the `normal` test case. * `ExecutionsPerSecond`: 2733102.5 for the `spread` test case. This suggests that the spread operator approach may be slower than the traditional object literal syntax due to its additional overhead. Please note that these results are specific to this benchmark and may not reflect performance differences in other scenarios or environments.
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