Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
test 32r23f
(version: 0)
23ftest
Comparing performance of:
1 vs 2
Created:
4 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
window.case1 = new Proxy({}, { get(t, p, r) { if (typeof p === 'string' && !isNaN(p)) { return +p } else { return Reflect.get(t, p, r) } } }); window.case2 = new Proxy({}, { get(t, p, r) { if (p.includes("asd")) { return +p } else { return Reflect.get(t, p, r) } } }); window.gabage1 = 0; window.gabage2 = 0;
Tests:
1
for (let i = 0; i < 1e6;i++) { gabage1 =+ case1[i]; }
2
for (let i = 0; i < 1e6;i++) { gabage2 += case2[i]; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
1
2
Fastest:
N/A
Slowest:
N/A
Latest run results:
No previous run results
This benchmark does not have any results yet. Be the first one
to run it!
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark definition and test cases to understand what is being tested. **Benchmark Definition** The benchmark definition provides two scripts that are used to create proxies for `case1` and `case2`. The purpose of these proxies is to manipulate numeric string values. * `window.case1 = new Proxy({}, {...})`: This creates a proxy for the object `{}`. The proxy has a `get` trap that checks if the property name is a numeric string (i.e., a number between 0 and positive infinity). If it is, the proxy returns the value of the property as a number (`+p`). Otherwise, it falls back to the original behavior and calls `Reflect.get(t, p, r)`. * `window.case2 = new Proxy({}, {...})`: This creates another proxy for the object `{}`. The proxy has a `get` trap that checks if the property name contains the string "asd". If it does, the proxy returns the value of the property as a number (`+p`). Otherwise, it falls back to the original behavior and calls `Reflect.get(t, p, r)`. **Options compared** Two options are being compared: 1. **Trapping numeric strings**: The first script (`case1`) traps numeric strings using a `get` trap. This means that when a numeric string is accessed as a property, it is immediately converted to a number. 2. **Trapping specific substrings**: The second script (`case2`) traps specific substrings ("asd") and converts them to numbers. **Pros and Cons** * Trapping numeric strings: + Pros: Can improve performance by avoiding unnecessary type conversions. + Cons: May break code that expects property names to be non-numeric. * Trapping specific substrings: + Pros: Can provide a way to validate or sanitize property names without modifying the original data. + Cons: May introduce additional complexity and overhead. **Library usage** The benchmark definition uses the `Proxy` constructor, which is a built-in JavaScript object that allows creating proxy objects. The purpose of these proxies is to manipulate numeric string values by converting them to numbers when accessed as properties. **Special JS features or syntax** This benchmark definition does not explicitly use any special JavaScript features or syntax beyond the use of `Proxy` and template literals (e.g., `"case1[i]"`). However, it relies on the behavior of `Reflect.get(t, p, r)` which is a part of the Reflect API. **Other alternatives** If you were to rewrite this benchmark definition without using proxies, you could achieve similar results by using: * Template literals with numeric string interpolation (e.g., `"case1[i]"`) * Regular expressions to match and extract numeric strings from property names * Function-based approaches to manipulate property values before accessing them Keep in mind that these alternatives may have different performance characteristics and trade-offs compared to using proxies.
Related benchmarks:
isNumber: regex vs isNaN
isNumber: regex vs isNaN (version: 1)
isnan regex and typeof
isNumber: regex vs isNaN (version: 2)
Comments
Confirm delete:
Do you really want to delete benchmark?