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: 1 }] }); 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: 1 }] }); 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 the provided benchmark definition and test cases.

**Benchmark Definition**

The benchmark definition is represented as a JSON object with two main sections: `Script Preparation Code` and `Html Preparation Code`. The `Script Preparation Code` section contains two JavaScript functions:

* `validatePersonSome(person, isCmsgOrgs, selectedOrgs)`: This function checks if a person's service groups match the selected organizations' SERVICE_GROUP_IDS.
* `validatePersonLoop(person, hasCmsgOrgs, selectedOrgs)`: This function uses a for loop to check if a person's service groups match the selected organizations' SERVICE_GROUP_IDS.

**Test Cases**

There are two test cases:

1. "For Loop": This test case creates an array of 1000 objects with `id` property and pushes them into the `service_groups` array of a `person` object. It then calls the `validatePersonLoop` function with the created `person` object, `hasCmsgOrgs` set to `true`, and `selectedOrgs` as an empty array.
2. "Some": This test case is similar to the "For Loop" test case, but it uses the `array.some()` method instead of a for loop.

**Options Compared**

The two options being compared are:

* For loop (using a traditional loop)
* Some (using the `array.some()` method)

**Pros and Cons**

* For Loop:
	+ Pros: Can be faster for small arrays, easier to understand and maintain.
	+ Cons: Can be slower for large arrays, can lead to more overhead due to array iteration.
* Some:
	+ Pros: Can be faster for large arrays, reduces overhead due to array iteration.
	+ Cons: Can be less intuitive and harder to understand, especially for those without experience with functional programming.

**Library**

In both test cases, the `validatePersonSome` function uses a custom implementation that doesn't rely on any external libraries. However, it does use some standard JavaScript features like arrays, loops, and function definitions.

**Special JS Feature or Syntax**

There are no special JS features or syntaxes used in this benchmark definition.

**Other Considerations**

When choosing between the for loop and `array.some()` method, consider the size of the array being iterated over. For small arrays, a traditional for loop might be faster and more efficient. However, for large arrays, using `array.some()` can lead to significant performance improvements due to reduced overhead.

**Alternatives**

Other alternatives for iterating over arrays in JavaScript include:

* Array.prototype.forEach()
* Array.prototype.find()
* Set
* Map (although this would require additional changes to the benchmark definition)

Keep in mind that these alternatives might have different trade-offs in terms of performance, 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):