Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
str.match vs str.Split3322
(version: 0)
Test String.match with regex against String.split with string. We are splitting a string at the spaces.
Comparing performance of:
String.split vs Regex.match
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
string = "This is a benchmark to test if matching a regex is faster that splitting a string"; regex = /\S+/gi;
Tests:
String.split
string.split(regex).filter(x => x)
Regex.match
string.match(regex)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
String.split
Regex.match
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 JSON to understand what is being tested. **Benchmark Definition** The website MeasureThat.net is comparing two approaches: using `String.prototype.split()` with a regular expression (regex) and using `String.prototype.match()` with a regex. In this specific benchmark, the string being split is `"This is a benchmark to test if matching a regex is faster that splitting a string"`. The regex `/\\S+/gi` is used to match one or more non-space characters globally (i.e., also matches at the end of the string). The `filter()` method is used to remove empty strings from the resulting array. **Options Compared** The two options being compared are: 1. **String.split() with regex**: This approach uses the `split()` method with a regex to split the string into an array. The regex `/\\S+/gi` is used to match one or more non-space characters globally. 2. **Regex.match() without splitting**: This approach uses the `match()` method with the same regex to find matches in the entire string, but does not return any values. **Pros and Cons of Each Approach** 1. **String.split() with regex**: * Pros: Fast, as it only iterates over the characters of the string once. * Cons: Requires creating an array, which can be memory-intensive for large strings. 2. **Regex.match() without splitting**: * Pros: Does not require creating an array, making it more memory-efficient. * Cons: May be slower than `String.split()` with regex, as it needs to iterate over the entire string. **Library and Purpose** There is no library being used in this benchmark. However, the regex `/\\S+/gi` is a standard JavaScript regex that matches one or more non-space characters globally. **Special JS Feature or Syntax** No special JavaScript features or syntax are being tested or utilized in this benchmark. **Other Alternatives** Some alternative approaches to compare with `String.split()` and `Regex.match()` could be: * Using `Array.prototype.reduce()` instead of `filter()` * Using a library like Lodash's `string.split()` function, which may optimize the splitting process * Using a different regex or optimization technique to improve performance It's worth noting that the benchmark is comparing two approaches within the JavaScript standard library. If you were to explore alternative languages or libraries for string manipulation and processing, the options might be different. Overall, this benchmark provides a simple yet useful comparison between two common string manipulation techniques in JavaScript: `String.split()` with regex and `Regex.match()`.
Related benchmarks:
str.match vs str.Split
str.match vs str.Split first result
str.match vs str.Split(regex)
str.match vs str.Split33
Comments
Confirm delete:
Do you really want to delete benchmark?