Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Which is faster, Coercing or inequality ( !something===true or something!==true)
(version: 0)
Checking if evaluating a value is not equal is faster or slower than coercing whether the value is true
Comparing performance of:
Coecing vs Not equvialence
Created:
5 years ago
by:
Guest
Jump to the latest result
Tests:
Coecing
let result let sample = true for (let i = 0; i < 100000; i++) { result = !sample===true }
Not equvialence
let result let sample = true for (let i = 0; i < 100000; i++) { result = sample!==true }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Coecing
Not equvialence
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 dive into the world of JavaScript microbenchmarks. **Benchmark Definition JSON Analysis** The benchmark definition is a simple JSON object that contains metadata about the test case. Here, we have two key pieces of information: 1. **Name**: The name of the benchmark, which in this case is "Which is faster, Coercing or inequality ( !something===true or something!==true)". 2. **Description**: A brief description of the benchmark, explaining that it compares the performance of coercing a boolean value to its equivalent using inequality operators. **Script Preparation Code and HTML Preparation Code** The script preparation code and HTML preparation code are empty strings, which means that no additional setup is required before running the benchmark. This makes sense for a simple benchmark like this one. **Individual Test Cases** We have two test cases: 1. **Coercing** * The script checks whether coercing a boolean value using the `!!` operator is faster than doing an explicit comparison with `===`. * The loop iterates 100,000 times and assigns the result of each operation to a variable. 2. **Not Equivalence** * This test case is similar to the Coercing test, but it uses the `!==` operator instead of coercing the boolean value. **Library: None** Neither of these tests rely on any external libraries. The JavaScript language itself provides the necessary features for these comparisons. **Special JS Feature/ Syntax: None** There are no special JavaScript features or syntax used in these tests. They are straightforward, simple expressions that demonstrate a specific aspect of JavaScript behavior. **Alternatives** If you want to run this benchmark on another platform, you would need to create a similar test case using the same syntax and structure. However, keep in mind that microbenchmarks can be very dependent on the specific environment and hardware being tested, so results may vary. Some alternatives for running JavaScript benchmarks include: 1. **Benchmark.js**: A popular benchmarking library specifically designed for JavaScript. 2. **js-benchmark**: Another benchmarking library that provides a simple API for writing benchmarks. 3. **V8 Profiler**: A tool provided by Google for profiling and benchmarking V8, the JavaScript engine used in Chrome. These alternatives offer more advanced features and flexibility than the simple benchmark definition JSON we're working with here, but they also require more setup and configuration to get started.
Related benchmarks:
Which equals operator (== vs ===) is faster?
Which falsy expression (! vs === 0) is faster?
Which equals operator (== vs ===) is faster2?
Which equals operator (== with type coercion vs ===) is faster?
Which equals operator (== vs === vs Object.is) is faster?
Comments
Confirm delete:
Do you really want to delete benchmark?