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assign vs spread vs marac vs djuka
(version: 0)
Comparing performance of:
assign vs spread
Created:
6 years ago
by:
Guest
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Tests:
assign
var params = { b:"hello", c: true, d:7 }; var other = Object.assign({ a: 2 }, params);
spread
var params = { b:"hello", c: true, d:7 }; var other = { a: 2, ...params };
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Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
assign
spread
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what's being tested. **Benchmark Overview** The benchmark measures the performance of three different approaches to assign values to an object: 1. `Object.assign()` 2. Spread syntax (`{ ... }`) 3. Other (not explicitly mentioned in the Benchmark Definition) **Options Compared** The benchmark compares the performance of two options that use spread syntax: `{ a: 2, ...params }` and `var other = { a: 2, ...params };`. The third option is not specified in the Benchmark Definition. **Pros and Cons of Each Approach** 1. **Object.assign()**: This method is widely supported and has been around for a long time. It's also relatively simple to use. * Pros: + Wide support across browsers + Simple syntax * Cons: + Can be slower due to the overhead of the `assign()` function call + May not be optimized by modern JavaScript engines 2. **Spread Syntax (`{ ... }`)**: This method has been widely adopted in recent years and is often considered more concise and expressive. * Pros: + More readable and concise syntax + Often faster due to the optimized spread syntax implementation in modern JavaScript engines * Cons: + May not be supported by older browsers or versions of Node.js + Can lead to confusing code if not used carefully **Library Used (if any)**: None. **Special JS Feature/Syntax**: The benchmark uses a feature called "rest parameter syntax" (`...params`), which was introduced in ECMAScript 2015. This syntax allows for more concise function calls and is often used in modern JavaScript code. **Other Alternatives** If the benchmark included `Object.assign()` but not the spread syntax, it would be interesting to see how performance compares between these two approaches. Additionally, other options like using libraries like Lodash or Ramda might be worth exploring. In summary, the benchmark measures the performance of three different approaches to assign values to an object: `Object.assign()`, spread syntax (`{ ... }`), and another unknown option. The benchmark highlights the trade-offs between conciseness, readability, and performance in JavaScript coding.
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