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Set.forEach vs [...Set].find()
(version: 0)
Comparing performance of:
Set.forEach vs [...Set].find()
Created:
4 years ago
by:
Registered User
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Script Preparation code:
window.books = [ 'Genesis', 'Exodus', 'Leviticus', 'Numbers', 'Deuteronomy', 'Joshua', 'Judges', 'Ruth', '1 Samuel', '2 Samuel', '1 Kings', '2 Kings', '1 Chronicles', '2 Chronicles', 'Ezra', 'Nehemiah', 'Esther', 'Job', 'Psalm', 'Proverbs', 'Ecclesiastes', 'Song of Solomon', 'Isaiah', 'Jeremiah', 'Lamentations', 'Ezekiel', 'Daniel', 'Hosea', 'Joel', 'Amos', 'Obediah', 'Jonah', 'Micah', 'Nahum', 'Habakkuk', 'Zephaniah', 'Haggai', 'Zachariah', 'Malachi', 'Matthew', 'Mark', 'Luke', 'John', 'Acts', 'Romans', '1 Corinthians', '2 Corinthians', 'Galatians', 'Ephesians', 'Philippians', 'Colossians', '1 Thessalonians', '2 Thessalonians', '1 Timothy', '2 Timothy', 'Titus', 'Philemon', 'Hebrews', 'James', '1 Peter', '2 Peter', '1 John', '2 John', '3 John', 'Jude', 'Revelation' ]; window.set = new Set(books); window.array = [...books]; window.bestCase = books[0]; window.worstCase = books[books.length - 1]; window.randomBook = books[Math.floor(Math.random() * books.length - 1)];
Tests:
Set.forEach
var foundBook; set.forEach(book => { if(book === bestCase){ foundBook = book } }); set.forEach(book => { if(book === worstCase){ foundBook = book } }); set.forEach(book => { if(book === randomBook){ foundBook = book } });
[...Set].find()
[...set].find(book => book === bestCase); [...set].find(book => book === worstCase); [...set].find(book => book === randomBook);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Set.forEach
[...Set].find()
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.1:latest
, generated one year ago):
Let's break down what this benchmark is testing. **Benchmark Overview** The benchmark compares the performance of two approaches to find an element in a set: 1. Using `set.forEach()` with a callback function 2. Converting the set to an array using `[...set]` and then using the `find()` method **Test Case 1: Set.forEach()** This test case uses `set.forEach()` to iterate over each element in the set, checking if it matches one of three specific book titles (`bestCase`, `worstCase`, or `randomBook`). The `foundBook` variable is updated accordingly. The pros and cons of using `set.forEach()` are: Pros: * Convenient way to iterate over a set * Easy to implement Cons: * May be slower than other methods, especially for large sets * Not as concise as some other approaches **Test Case 2: [...Set].find()** This test case converts the set to an array using `[...set]` and then uses the `find()` method to find an element that matches one of the three specific book titles. The `foundBook` variable is updated accordingly. The pros and cons of using `[...Set].find()` are: Pros: * Often faster than iterating over a set with `forEach()` * More concise and expressive code Cons: * May be slower than other methods, especially for large sets * Requires converting the set to an array first **Other Considerations** When deciding which approach to use, consider the following factors: * Set size: If the set is very large, `[...Set].find()` might be faster due to its ability to short-circuit when finding the element. * Element existence: If you need to check if a specific element exists in the set, `[...Set].find()` is a good choice. * Code readability: If code conciseness and expressiveness are important, `[...Set].find()` might be a better option. **Library and Special JS Features** There's no external library used in this benchmark. However, we do see some special JavaScript features: * The spread operator (`[...set]`) is used to convert the set to an array. * The `forEach()` method is used to iterate over the set. * The `find()` method is used to find an element in the array. These are standard JavaScript features and don't require any specific knowledge or expertise beyond basic JavaScript understanding.
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