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setter/getter
(version: 0)
i want to know overheads.
Comparing performance of:
basic vs deliver
Created:
3 years ago
by:
Registered User
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Tests:
basic
const a = 0; for (i=0; i<10; i++){ const b = a; }
deliver
const a = 0; const getA = () => a; for (i=0; i<10; i++){ const b = getA(); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
basic
deliver
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.1:latest
, generated one year ago):
Let's break down the benchmark and its results. **Benchmark Definition** The benchmark is called "setter/getter" and its purpose is to measure the overhead of using getter functions versus direct access to a variable. The description mentions wanting to know the overheads, which suggests that the author wants to compare the performance impact of using getters versus simple assignment. **Test Cases** There are two test cases: 1. **Basic**: This test case simply assigns a value to `a` and then iterates 10 times, accessing the value of `a` in each iteration using a direct assignment: `const b = a;`. 2. **Deliver**: This test case uses a getter function to access the value of `a`: `const getA = () => a;` followed by iterating 10 times and calling the getter function to access the value of `a`: `const b = getA();`. **Latest Benchmark Result** The results show two executions: 1. **Deliver**: This test case executed at a rate of approximately 27,902,732 operations per second on Chrome 109. 2. **Basic**: This test case executed at a rate of approximately 23,209,446 operations per second on Chrome 109. **What's being tested?** In this benchmark, the author is comparing the performance impact of using getter functions (`deliver` test case) versus direct access to a variable (`basic` test case). The results suggest that accessing a variable directly (using `const b = a;`) is slightly faster than using a getter function (`const getA = () => a; const b = getA();`). **Pros and Cons** Using getter functions can be beneficial for code organization, readability, and maintainability. However, this benchmark suggests that there may be a small performance overhead associated with using getters. **Library or Special JS Feature** In this benchmark, no special JavaScript features or libraries are used beyond standard ES5 syntax. **Alternatives** Other alternatives to consider when deciding between direct access and getter functions include: 1. **Computed properties**: Using computed property names can provide a more flexible way of accessing values without the overhead of getters. 2. **Property accessors**: In modern JavaScript, property accessors (e.g., `obj.getA()` instead of `const getA = () => obj.a;`) may offer improved performance and readability. In conclusion, this benchmark highlights the importance of considering performance when deciding between different approaches in JavaScript programming.
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