Benchmark: test all and every

HTML Preparation code:

<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>

Script Preparation code:

var users = [
  { 'user': 'joey',  'age': 32 },
  { 'user': 'ross',    'age': 41 },
  { 'user': 'chandler', 'age': 39 }
]

Tests:

array every
users.every(u => u.age > 35)
all
R.all(u => u.age > 35)(users)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array every
all

Fastest: N/A

Slowest: N/A

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

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Let's break down the provided JSON and explain what is being tested.

**Overview**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The benchmark in question tests two approaches: using the `every` method of an array, and using the `all` function from the Ramda library.

**Script Preparation Code**

The script preparation code defines an array of objects, where each object represents a user with their age:
```javascript
var users = [
  { 'user': 'joey',  'age': 32 },
  { 'user': 'ross',    'age': 41 },
  { 'user': 'chandler', 'age': 39 }
];
```
This array is used as input for both test cases.

**Html Preparation Code**

The HTML preparation code includes a script tag that loads the Ramda library:
```html
<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>
```
Ramda is a functional programming library for JavaScript. The `all` function from Ramda is used in one of the test cases.

**Individual Test Cases**

There are two individual test cases:

1. **"array every"`**: This test case uses the `every` method of an array to check if all users have an age greater than 35:
```javascript
users.every(u => u.age > 35)
```
This approach iterates over the array and checks each element against the condition.

2. **"all"`**: This test case uses the `all` function from Ramda to check if all users have an age greater than 35:
```javascript
R.all(u => u.age > 35)(users)
```
This approach also iterates over the array, but it uses a functional programming style to achieve the same result.

**Pros and Cons**

Here are some pros and cons of each approach:

* **"array every"`**:
	+ Pros: Simple and easy to understand. It's a built-in method in JavaScript arrays.
	+ Cons: Can be slower for large datasets because it requires iterating over the entire array.
* **"all"` (Ramda)**:
	+ Pros: More concise and expressive than the `every` method. It uses functional programming principles, which can lead to more efficient code.
	+ Cons: Requires loading an additional library (Ramda). The syntax may be unfamiliar to some developers.

**Library**

The `all` function from Ramda is used to check if all elements in a collection satisfy a predicate. In this case, the predicate is a function that takes a user object and returns `true` if the age is greater than 35.

**Other Alternatives**

If you didn't use Ramda, you could also implement an `all` function using a traditional loop:
```javascript
function all(collection) {
  for (var i = 0; i < collection.length; i++) {
    var element = collection[i];
    if (!element || !element.age > 35) {
      return false;
    }
  }
  return true;
}

R.all = function(predicate, collection) {
  return all(collection);
}
```
However, this implementation would be less concise and efficient than using the `all` function from Ramda.

In summary, the benchmark tests two approaches to checking if all elements in an array satisfy a predicate. The "array every" approach uses a built-in method in JavaScript arrays, while the "all" function from Ramda uses functional programming principles for a more concise and expressive implementation.

Related benchmarks:

test all and every (version: 0)

Comparing performance of: array every vs all

Created: 5 years ago by: Guest

Jump to the latest result

array every

all

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):