Benchmark: loop vs some - MeasureThat.net

Script Preparation code:

function validatePersonSome(person, isCmsgOrgs, selectedOrgs) {
  if (isCmsgOrgs) {
    // If a person has service_groups it will check them against the org SERVICE_GROUP_IDS, if a match is found that person will be selectable
    if (person.service_groups.length) { // eslint-disable-line mp-camelcase
      return person.service_groups.some(function(service_group) { // eslint-disable-line mp-camelcase
        return selectedOrgs.some(function(org) {
          return org.SERVICE_GROUP_IDS.some(function(org_service_group) { // eslint-disable-line mp-camelcase
            return org_service_group.SERVICE_GROUP_ID === service_group.id; // eslint-disable-line mp-camelcase
          });
        });
      });
    } else {
      return false;
    }
  }
  // If no orgs contain SERVICE_GROUP_IDS, only those persons with no service_groups will be selectable
  else {
    return person.service_groups.length === 0;
  }
}

function validatePersonLoop(person, hasCmsgOrgs, selectedOrgs) {
  var isValid = false;

  if (hasCmsgOrgs) {
    // If a person has service_groups it will check them against the org SERVICE_GROUP_IDS, if a match is found that person will be selectable
    if (person.service_groups.length) {
      var orgServiceGroupIds = {};
      var org;

      for (var i = 0; i < selectedOrgs.length; i++) {
        org = selectedOrgs[i];
        for (var j = 0; j < org.SERVICE_GROUP_IDS.length; j++) {
          orgServiceGroupIds[org.SERVICE_GROUP_IDS[j].SERVICE_GROUP_ID] = true;
        }
      }

      for (var i = 0; i < person.service_groups.length; i++) {
        if (orgServiceGroupIds[person.service_groups[i].id]) {
          isValid = true;
          break;
        }
      }
    }
  }
  // If no orgs contain SERVICE_GROUP_IDS, only those persons with no service_groups will be selectable
  else {
    isValid = person.service_groups.length === 0;
  }

  return isValid;
}

Tests:

For Loop
var person = {}; person.service_groups = []; for (var i = 0; i < 1000; i++) { person.service_groups.push({ id: i }); } var selectedOrgs = []; selectedOrgs.push({ "ORGANIZATION_ID": "12345", "ORG_NAME": "some_name", "SERVICE_GROUP_IDS": [{ service_group_id: "12345" }] }); validatePersonLoop(person, true, selectedOrgs);
Some
var person = {}; person.service_groups = []; for (var i = 0; i < 1000; i++) { person.service_groups.push({ id: i }); } var selectedOrgs = []; selectedOrgs.push({ "ORGANIZATION_ID": "12345", "ORG_NAME": "some_name", "SERVICE_GROUP_IDS": [{ service_group_id: "12345" }] }); validatePersonSome(person, true, selectedOrgs);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
For Loop
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.

Let's break down what's being tested in this benchmark.

**What is being tested?**

The provided JSON represents two microbenchmarks that test the performance of JavaScript loops (specifically, `for` loops) versus the `some()` method for array filtering. The tests aim to determine which approach is faster: using a traditional `for` loop or utilizing the `some()` method with an arrow function.

**Options being compared**

Two options are being compared:

1. **Traditional `for` loop**: This involves using a traditional `for` loop to iterate over an array and check if each element meets a certain condition.
2. **`some()` method with an arrow function**: This involves using the `some()` method on an array, passing an arrow function as the callback, which checks if each element in the array meets a certain condition.

**Pros and cons of each approach**

**Traditional `for` loop:**

Pros:

* Can be more intuitive for complex logic
* Allows for easier debugging

Cons:

* Can be slower due to the overhead of incrementing variables
* More verbose code

**`some()` method with an arrow function:**

Pros:

* Often faster due to the optimized implementation in JavaScript engines
* Less verbose code

Cons:

* May require more mental effort to understand the implications of using `some()`
* Arrow functions can be less readable for complex logic

**Other considerations**

In this benchmark, the tests use a simple array of objects with an `id` property. The `validatePersonSome()` function uses the `some()` method to check if each person's service group ID is in the `selectedOrgs` array. In contrast, the `validatePersonLoop()` function uses a traditional `for` loop to iterate over the people and check their service groups.

**Library usage**

There are no external libraries used in these benchmarks.

**Special JS features or syntax**

The benchmark does not use any special JavaScript features or syntax beyond what is typically supported by modern browsers. However, it's worth noting that some JavaScript engines might optimize or perform differently on certain features due to their implementation.

**Alternatives**

Other alternatives for array filtering and looping could include:

* Using `forEach()` instead of `some()`
* Utilizing `Array.prototype.every()` for a different type of filtering
* Leveraging modern JavaScript features like `Map` or `Set` for iteration and filtering

Keep in mind that the choice of which approach to use ultimately depends on the specific requirements of your project, including performance considerations, code readability, and maintainability.

Related benchmarks:

loop vs some (version: 0)

Tests for loops vs array.some

Comparing performance of: For Loop vs Some

Created: 9 years ago by: Guest

Jump to the latest result

For Loop

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):