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Implicit native comparison vs explicit comparison
(version: 0)
Benchmark.js
Comparing performance of:
Implicit native vs Explicit
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var v = { foo: "42" }
Tests:
Implicit native
Math.max(10, v["foo"])
Explicit
Math.max(10, +v["foo"])
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Implicit native
Explicit
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:122.0) Gecko/20100101 Firefox/122.0
Browser/OS:
Firefox 122 on Windows
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=502655" width="100%" height="500px"></iframe>
Explicit
2639.2M/s
Implicit native
79.2M/s
View exact numbers
Test name
Executions per second
✓
Explicit
2,639,187,712 Ops/sec
Implicit native
79,209,696 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Overview of the Benchmark** The provided benchmark measures the performance difference between implicit native comparison and explicit comparison in JavaScript. **What are being compared?** Two approaches are being compared: 1. **Implicit Native Comparison**: This approach uses the `Math.max()` function to compare a value with another value, without explicitly converting the second value to a number using the unary plus operator (`+`). 2. **Explicit Comparison**: This approach uses the unary plus operator (`+`) to convert the second value to a number before comparing it with the first value. **Pros and Cons of Each Approach** 1. **Implicit Native Comparison**: * Pros: Can be faster since the comparison is done directly on the values, without the overhead of converting one of them to a number. * Cons: May not work as expected if the second value is not a numeric type, leading to unexpected results or errors. 2. **Explicit Comparison**: * Pros: Always works correctly, even with non-numeric types, since it explicitly converts the second value to a number. * Cons: May be slower due to the overhead of converting one of the values to a number. **Library Usage** None of the benchmark code uses any external libraries. However, it does utilize the `Math` object, which is a built-in JavaScript library that provides mathematical functions. **Special JS Features/Syntax** There are no special JavaScript features or syntax used in this benchmark. **Other Alternatives** If you want to create similar benchmarks for other comparison operators (e.g., `Math.min()`, equality checks using `===`), you can modify the `Benchmark Definition` json to include different expressions. For example: ```json { "Name": "Implicit native addition vs explicit addition", "Description": null, "Script Preparation Code": "var v = { foo: 10 }", "Html Preparation Code": null } ``` And then define two test cases, similar to the original benchmark: ```json [ { "Benchmark Definition": "Math.max(0, v[\"foo\"] + 5)", "Test Name": "Implicit native" }, { "Benchmark Definition": "(v[\"foo\"] + 5) > 10", "Test Name": "Explicit" } ] ``` This would compare the performance of implicit and explicit addition operations in JavaScript.
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