Benchmark: boolean - MeasureThat.net

Script Preparation code:

var ViewCollabFilterColumnId = 'idonotexist-system-view-filter';
var ViewPersonalFilterColumnId = 'idonotexist-system-view-personal-filter';
var data =  {
  'v-FOCsQ1A6xx-system-view-filter': {
    calculatedValue: '',
    error: null,
  },
};

Tests:

Boolean
var result = Boolean(data[ViewCollabFilterColumnId]) || Boolean(data[ViewPersonalFilterColumnId])
In
var result = ViewCollabFilterColumnId in data || ViewPersonalFilterColumnId in data

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Boolean
In

Fastest: N/A

Slowest: N/A

Latest run results:

No previous 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'd be happy to explain what's being tested in the provided benchmark.

**Script Preparation Code**

The script preparation code defines two variables: `ViewCollabFilterColumnId` and `ViewPersonalFilterColumnId`. These variables are set to specific values, but it's clear that they're not actual column IDs, as indicated by the comment `'idonotexist-system-view-filter'`.

These variables seem to be used to create a mock data object. The script then uses these variables to access properties in the `data` object.

**Html Preparation Code**

There is no HTML preparation code provided, so we can assume that this benchmark doesn't involve any HTML-related tests.

**Individual Test Cases**

The two test cases are:

1. **Boolean**: This test case checks the behavior of the `Boolean()` function when applied to a value. In this case, it's used on the `calculatedValue` property of an object in the `data` array.
2. **In**: This test case uses the `in` operator to check if a string (either `ViewCollabFilterColumnId` or `ViewPersonalFilterColumnId`) exists as a key in the `data` object.

**Library: In**

The `in` operator is a built-in JavaScript operator that checks if a property name exists as a key in an object. This operator was introduced in ECMAScript 2020 (ES10).

**Pros and Cons of using In**

Pros:

* The `in` operator is concise and expressive, making it easier to write readable code.
* It's often faster than other methods for checking membership in an array or object.

Cons:

* Some older browsers might not support the `in` operator, although this should be rare today.
* When used with objects that have a lot of properties, the `in` operator can be slower than other approaches due to its lookup mechanism.

**Alternatives**

Other ways to check for membership in an object or array include:

* Using `Object.keys()` and checking if the key exists:
```javascript
if (Object.keys(data).includes(ViewCollabFilterColumnId)) { ... }
```
* Using a `for...in` loop:
```javascript
for (var key in data) {
  if (key === ViewCollabFilterColumnId) { ... }
}
```
* Using `Array.prototype.includes()` for arrays:
```javascript
if (data.some(x => x.ViewCollabFilterColumnId)) { ... }
```

**Other Considerations**

The benchmark is likely testing the performance of these two test cases in different browsers and on different devices. The `ExecutionsPerSecond` value indicates how many executions of each test case are performed per second, which can give us an idea of their relative performance.

It's worth noting that this benchmark might be biased towards modern JavaScript features and syntax, as it doesn't include older browsers or versions.

Related benchmarks:

boolean (version: 0)

Comparing performance of: Boolean vs In

Created: 2 years ago by: Guest

Jump to the latest result

Boolean

In

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):