Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
arity 3 string join vs concat vs plus with separator
(version: 1)
Comparing performance of:
Join string parts vs Concat string parts vs Chained concat string parts vs Add string parts
Created:
4 years ago
by:
Registered User
Jump to the latest result
Script Preparation code:
function joinPairJoin(separator, fst, snd) { return [fst, snd].join(separator) } function joinPairConcat(separator, fst, snd) { return fst.concat(separator, snd) } function joinPairConcatConcat(separator, fst, snd) { return fst.concat(separator).concat(snd) } function joinPairAdd(separator, fst, snd) { return fst + separator + snd }
Tests:
Join string parts
const str = joinPairJoin('-', 'foo', 'bar')
Concat string parts
const str = joinPairConcat('-', 'foo', 'bar')
Chained concat string parts
const str = joinPairConcatConcat('-', 'foo', 'bar')
Add string parts
const str = joinPairAdd('-', 'foo', 'bar')
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
Fork
Test case name
Result
Join string parts
Concat string parts
Chained concat string parts
Add string parts
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):
The provided JSON represents a JavaScript benchmarking test case, specifically designed to compare the performance of different methods for joining or concatenating strings in JavaScript. **Benchmark Definition:** The benchmark definition consists of four functions: 1. `joinPairJoin(separator, fst, snd)`: Uses the `Array.prototype.join()` method with a separator. 2. `joinPairConcat(separator, fst, snd)`: Uses the `Array.prototype.concat()` method with a separator. 3. `joinPairConcatConcat(separator, fst, snd)`: Concatenates two arrays using `concat()`, and then concatenates the result to another array using `concat()` again. 4. `joinPairAdd(separator, fst, snd)`: Simply concatenates three strings using the `+` operator with a separator. **Options compared:** The benchmark compares the performance of these four functions: 1. Using `Array.prototype.join()` 2. Using `Array.prototype.concat()` 3. Chaining multiple calls to `concat()` 4. Using the `+` operator with a separator **Pros and Cons:** * **join()**: Pros: + Simple and concise + Fast, as it uses a built-in method optimized for performance Cons: + May not be as readable or maintainable for complex cases * **concat():** Pros: + Flexible and reusable + Can handle complex arrays or concatenated strings Cons: + May be slower than `join()` due to the overhead of creating an array * **Chaining concat():** Pros: + Allows for more control over the concatenation process + Can be useful in certain scenarios where multiple operations are needed Cons: + Can lead to performance overhead due to repeated calls to `concat()` * **Add operator (+):** Pros: + Simple and concise + Fast, as it uses a built-in method optimized for performance Cons: + May not be suitable for complex cases or large strings **Library usage:** None of the functions explicitly use any external libraries. **Special JS feature/syntax:** The benchmark does not utilize any special JavaScript features or syntax. It only relies on standard JavaScript methods and operators. **Other alternatives:** If you were to write a similar benchmark, you might also consider including tests for other string concatenation methods, such as: * Using a template string * Using the `String.prototype.repeat()` method * Using a loop to concatenate strings Keep in mind that these additional tests would require more extensive code and may not provide significant performance differences compared to the existing benchmark.
Related benchmarks:
Concat vs Join
.join vs string builder vs string concatenation
arity 3 string join vs concat
string concat + join vs unshift + join
Comments
Confirm delete:
Do you really want to delete benchmark?