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Adding fields to functions
(version: 0)
Comparing performance of:
fun-assign vs no-assign-named vs object-assign
Created:
9 years ago
by:
Guest
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Tests:
fun-assign
var f; var sum = 0; for(var i = 0; i <= 100000; i += 1) { f = function(j) { return j; }; f.name = "f" + String(i); sum += f(i); } console.log(f.name);
no-assign-named
var f; var sum = 0; for(var i = 0; i <= 100000; i += 1) { f = function f(j) { return j; }; sum += f(i); } console.log(f.name);
object-assign
var f; var sum = 0; var o = {}; for(var i = 0; i <= 100000; i += 1) { f = function f(j) { return j; }; o.name = "f" + String(i); sum += f(i); } console.log(f.name);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
fun-assign
no-assign-named
object-assign
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 provided benchmark definition and test cases to explain what's being tested, compared, and their pros and cons. **Benchmark Definition** The benchmark measures how fast JavaScript functions can be created and executed, with an emphasis on assigning properties to them. The script preparation code is empty in all three test cases, which means that the creation of functions is the main focus of this benchmark. **Individual Test Cases** There are three test cases: 1. **"fun-assign"`** This test case creates a function `f` and assigns it a name using the `name` property. The function returns its argument `j`. Pros: Simple and straightforward, making it easy to understand and implement. Cons: May not accurately represent real-world scenarios where functions are created dynamically. 2. **"no-assign-named"`** This test case creates a function `f` and executes it without assigning any properties to it. Pros: More representative of real-world scenarios where functions are created but never assigned properties. Cons: The absence of property assignment may not accurately measure the performance impact of creating functions with names. 3. **"object-assign"`** This test case creates a function `f` and assigns its name using an object (`o`) with a `name` property. Pros: More realistic scenario, as it simulates real-world use cases where functions are created dynamically and assigned to objects. Cons: The presence of the object may introduce additional overhead due to the creation of a new object instance. **Comparison** The three test cases are designed to measure the performance impact of creating functions with or without assigning properties. The results will indicate how quickly each function can be created and executed, taking into account any potential overhead introduced by property assignment. **Library Usage** None of the test cases use external libraries or frameworks that would introduce additional dependencies or complexity. **Special JS Features/Syntax** There are no special JavaScript features or syntax used in these test cases. The focus is on creating functions with different approaches to assigning properties. **Other Alternatives** If you were to create a similar benchmark, you could consider adding more test cases to cover other scenarios, such as: * Creating multiple functions concurrently * Using arrow functions instead of traditional function expressions * Measuring the performance impact of using `const` or `let` keywords for function declarations By expanding the scope of your benchmark, you can gain a better understanding of the performance characteristics of different JavaScript approaches and ensure that your results are more comprehensive and representative.
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