Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
spread join vs split join vs replace
(version: 0)
Comparing performance of:
spread vs split vs replace
Created:
5 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
window.a = 'abcdefghijklmnopqrstuvwxyz'
Tests:
spread
const r = [...a].join('.*?')
split
const r = a.split('').join('.*?')
replace
const r = a.replace(/(.)/g, '$1*?')
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
Fork
Test case name
Result
spread
split
replace
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):
I'll explain the benchmark and its options. **Benchmark Definition** The provided JSON defines a JavaScript microbenchmark that compares three different string operations: 1. **Spread**: Creating a new array by spreading the characters of a string (`"abcdefghijklmnopqrstuvwxyz"`). 2. **Split**: Splitting the characters of a string into an array using the `split` method. 3. **Replace**: Replacing each character in a string with another string using the `replace` method. **Options Compared** The benchmark compares the performance of these three operations on different strings, specifically `"abcdefghijklmnopqrstuvwxyz"`. * The `spread` option creates a new array by spreading the characters of the input string. * The `split` option splits the characters of the input string into an array using the default separator ( whitespace). * The `replace` option replaces each character in the input string with another string. **Pros and Cons of Each Approach** 1. **Spread**: This approach is simple to implement and doesn't require any additional libraries or dependencies. * Pros: Easy to understand, fast execution time. * Cons: Requires creating a new array, which can be memory-intensive for large inputs. 2. **Split**: This approach uses the `split` method, which splits a string into an array using a specified separator. * Pros: Efficient use of memory, doesn't require creating a new array. * Cons: Requires the `split` method, which might not be optimized for performance in all browsers. 3. **Replace**: This approach uses the `replace` method to replace each character in the input string with another string. * Pros: Fast execution time, efficient use of memory. * Cons: Requires using a regular expression (regex) pattern, which can be slower than simple string operations. **Library Used** None explicitly mentioned. However, the benchmark uses the built-in `split` and `replace` methods, which are part of the JavaScript language specification. **Special JS Features or Syntax** No special features or syntax used in this benchmark. **Other Alternatives** If you're looking for alternatives to these operations: * Instead of spreading a string into an array, you could use other methods like `Array.from()` or `String.prototype.split()`. * For the `split` operation, you could also use a custom separator or regular expression pattern. * For the `replace` operation, you could use a different replacement strategy, such as using a callback function or modifying the original string in place. Keep in mind that these alternatives might change the performance characteristics of the benchmark results.
Related benchmarks:
Split Join vs Basic string replace
Regex vs split/join2
Regex vs split/join with simple replace
Split join vs replace (fixed string)
Comments
Confirm delete:
Do you really want to delete benchmark?