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pippoepluto
(version: 0)
Comparing performance of:
test vs match
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var string = "Hello world!"; var regex = /[A-Z][a-z]+ [a-z]+/;
Tests:
test
regex.test(string);
match
string.match(regex);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
test
match
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the explanation into sections to make it easier to understand. **Benchmark Definition JSON** The provided benchmark definition is a JSON object that defines a basic JavaScript microbenchmark. Here's what it contains: * `Name`: A unique name for the benchmark (in this case, "pippoepluto"). * `Description`: An optional description of the benchmark (empty in this case). * `Script Preparation Code`: A code snippet that is executed before running each test case. In this case, it declares two variables: `string` and `regex`. * `Html Preparation Code`: An optional code snippet that is executed before running each test case (empty in this case). **Options Compared** The benchmark compares the execution time of two different approaches: 1. `regex.test(string);` 2. `string.match(regex);` These two methods are used to perform a regular expression match on the `string` variable. **Pros and Cons of Each Approach** * `regex.test(string);`: + Pros: This method is generally faster because it uses a native JavaScript function that is optimized for performance. + Cons: This method only returns a boolean value indicating whether a match was found, whereas `string.match(regex)` returns an array containing the matched text if a match was found. * `string.match(regex);`: + Pros: This method can be useful when you need to capture the matched text or perform further processing on it. + Cons: This method may incur additional overhead due to the creation of a new string object and the allocation of memory for the match array. **Library Used** In this benchmark, a regular expression library is used to define the `regex` pattern. The purpose of this library is to provide a way to create and test regular expressions in JavaScript. **Special JS Features/Syntax** There are no special JavaScript features or syntax mentioned in this benchmark that would require additional explanation. **Other Alternatives** If you need to perform a regular expression match, there are other alternatives to the methods used in this benchmark: * `String.prototype.match()`: This method is similar to `string.match(regex)`, but it is part of the JavaScript String prototype and can be called as a function. * `RegExp.prototype.test()`: This method is similar to `regex.test(string)`, but it is part of the JavaScript RegExp prototype and requires creating an instance of a RegExp object. **Benchmark Preparation Code** The provided script preparation code defines two variables: `string` and `regex`. The string variable contains the text "Hello world!". The regex variable contains a regular expression pattern that matches strings with at least one uppercase letter followed by one lowercase letter. This pattern is used to test both methods in the benchmark. **Individual Test Cases** The individual test cases are defined as an array of objects, each containing: * `Benchmark Definition`: A string representing the code snippet to be executed for each test case. * `Test Name`: A unique name for each test case (in this case, "test" and "match"). These test cases can be run in sequence to measure the execution time of each method.
Related benchmarks:
String.match vs. RegEx.test
Single Character Checking
Various regex testing patterns
String.match vs. RegEx.test1
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