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;
}

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
    }]
});

Tests:

For Loop
validatePersonLoop(person, true, selectedOrgs);
Some
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.

**Main Test Case**

The main test case is comparing the performance of two loops: `array.some()` and traditional `for` loop.

**Options Compared**

Two options are compared:

1. **Traditional `for` loop**: This approach uses a traditional `for` loop to iterate over the `person.service_groups` array, checking if each service group's ID exists in the `selectedOrgs.SERVICE_GROUP_IDS` array.
2. **`array.some()`**: This approach uses the `some()` method on the `person.service_groups` array, which returns a boolean indicating whether at least one element in the array passes the provided callback function.

**Pros and Cons**

* **Traditional `for` loop**:
	+ Pros: Can be more efficient for large arrays since it avoids creating intermediate arrays or objects.
	+ Cons: Can be less concise and easier to write, especially for complex logic.
* **`array.some()`**:
	+ Pros: More concise and readable, can be easier to write for simple logic.
	+ Cons: May incur additional overhead due to the use of a special method.

In general, `array.some()` is a more modern and efficient way to perform this type of check. However, the performance difference may not be significant for small arrays like in this benchmark.

**Library Used**

The `validatePersonSome()` function uses the `some()` method on the `person.service_groups` array. This is a built-in JavaScript method that returns a boolean indicating whether at least one element passes the provided callback function.

**Special JS Feature or Syntax**

There are no special JavaScript features or syntaxes used in this benchmark, apart from the use of the `some()` method, which is a standard part of the ECMAScript specification.

**Other Alternatives**

If you were to rewrite this benchmark using other alternatives, here are some options:

1. **`forEach()` instead of traditional `for` loop**: This would replace the traditional `for` loop with a call to `forEach()`, which iterates over an array in a similar way.
2. **Using a different data structure**: For example, if you wanted to test the performance of using a Set or Map instead of an array.
3. **Adding more complexity**: You could add more logic to the benchmark, such as checking for multiple conditions or using more complex data structures.

However, these alternatives would likely change the nature of the benchmark significantly, and may not be relevant to the original comparison between `array.some()` and traditional `for` loop.

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):