Benchmark: filter & some vs for & if & some

Script Preparation code:

invalidThings = [
  {
    falseThing: ["bad", "wrong", "horrible"],
    id: "0f45211e-a107-3456-a3fd-24e5d23f2916",
    indexId: 1,
    name: "Test1"
  },
  {
    falseThing: ["bad", "horrible"],
    id: "0505f987-a1a6-48aa-973d-7844d1f618d9",
    indexId: 11,
    name: "Test12",
  },
  {
    falseThing: ["bad", "wrong", "horrible", "bla"],
    id: "bbf0248a-709a-4480-abec-99d8ca658663",
    indexId: 21,
    name: "Test14",
  },
  {
    falseThing: ["bad", "wrong", "horrible"],
    id: "3b79317e-494d-421a-84a6-0920a8990f57",
    indexId: 13,
    name: "Test15",
  },
  {
    falseThing: [ "horrible"],
    id: "0e33ed07-39b2-4f10-958f-2403545687c5",
    indexId: 2,
    name: "Test17",
  },
  {
    falseThing: ["bad", "wrong", "horrible"],
    id: "1370c9c8-ab0c-4023-b71a-18de7bd19e0b",
    indexId: 4,
    name: "Test18",
  },
  {
    falseThing: ["bad", "wrong", "horrible"],
    id: "00c6dfb2-a716-43a0-b453-529de59107cf",
    indexId: 6,
    name: "Test19",
  },
  {
    falseThing: [ "wrong", "horrible"],
    id: "57750eee-07d7-4cf0-be83-03b6fc62dbd1",
    indexId: 3,
    name: "Test110",
  },
  {
    falseThing: ["bad", "wrong"],
    id: "8870af0a-4d7e-4592-b859-3cc364035616",
    indexId: 14,
    name: "Test11",
  },
  {
    falseThing: ["bad", "wrong", "horrible"],
    id: "3c41c45e-87ef-4060-948a-06c490a5cded",
    indexId: 2,
    name: "1Test12",
  }
];

removedInvalidThings = [
  {
    falseThing: ["bad"],
    id: "0505f987-a1a6-48aa-973d-7844d1f618d9",
    indexId: 11,
    name: "Test12",
  },
  {
    falseThing: ["bad"],
    id: "bbf0248a-709a-4480-abec-99d8ca658663",
    indexId: 21,
    name: "Test14",
  }
];

Tests:

filter & some
let result = invalidThings.filter(invalidThing => !removedInvalidThings.some(removedInvalidThing => removedInvalidThing.id === invalidThing.id)) console.log(result)
for & if & some
result = []; for (const invalidThing of invalidThings) { if (!removedInvalidThings.some( removedInvalidThing => removedInvalidThing.id === invalidThing.id)) { result.push(invalidThing) } } console.log(result);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
filter & some
for & if & some

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

I'll do my best to explain what's being tested in this benchmark.

**Overview**

The benchmark tests two different approaches for filtering an array of objects based on the presence of another array of objects with specific IDs. The test cases use JavaScript and are designed to measure performance differences between two methods: `filter()` with a callback function, and a traditional `for` loop with conditional statements.

**What's being tested**

The benchmark defines two test cases:

1. **"filter & some"**: This test case uses the `filter()` method with a callback function that checks if an object is not present in the `removedInvalidThings` array using the `some()` method.
2. **"for & if & some"**: This test case uses a traditional `for` loop to iterate through the `invalidThings` array, and inside the loop, it checks if each object is not present in the `removedInvalidThings` array using a conditional statement.

**Options being compared**

The benchmark compares the performance of two approaches:

1. **`filter()` with callback**: This approach uses the `filter()` method to create a new array containing only the elements that pass the test implemented by the provided callback function.
2. **Traditional `for` loop with conditional statements**: This approach uses a traditional `for` loop to iterate through the array, and inside the loop, it checks if each object is not present in the `removedInvalidThings` array using a conditional statement.

**Pros and cons of each approach**

1. **`filter()` with callback**:
	* Pros: concise, expressive, and easy to read; eliminates the need for explicit iteration and loop logic.
	* Cons: may be slower than traditional loops due to the overhead of creating a new array and executing the callback function.
2. **Traditional `for` loop with conditional statements**:
	* Pros: can be faster in some cases since it avoids the overhead of creating a new array; allows for more control over the iteration process.
	* Cons: more verbose, harder to read and maintain; requires explicit loop logic.

**Library usage**

There is no explicit library usage mentioned in the benchmark definition. However, the `filter()` method and `some()` method are part of the JavaScript standard library.

**Special JS feature or syntax**

The only notable feature used here is the arrow function (`invalidThing => !removedInvalidThings.some(...)`) in the first test case. This syntax was introduced in ECMAScript 2015 (ES6) and provides a concise way to define small, single-purpose functions.

**Other alternatives**

If you want to explore alternative approaches or optimize the performance of this benchmark, here are some ideas:

1. **Using `forEach()` instead of `filter()`**: If you don't need to create a new array, using `forEach()` can be faster since it avoids the overhead of creating an array.
2. **Using `reduce()` instead of traditional loops**: The `reduce()` method can simplify the loop logic and make the code more concise; however, its performance may vary depending on the specific use case.
3. **Profile-guided optimization**: Use tools like Webpack or V8 to profile your JavaScript application and identify performance bottlenecks. This can help you optimize the code for better performance.

Keep in mind that the best approach will depend on the specific requirements of your project, including factors such as data size, iteration frequency, and readability considerations.

Related benchmarks:

filter & some vs for & if & some (version: 1)

Comparing performance of: filter & some vs for & if & some

Created: 6 years ago by: Registered User

Jump to the latest result

filter & some

for & if & some

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):