Benchmark: tests test - MeasureThat.net

Tests:

test find index
var test = [{name: 'test1', id: 1}, {name: 'test2', id: 2}, {name: 'test3', id: 3},{name: 'test4', id: 4},{name: 'test3', id: 5},{name: 'test3', id:6},{name: 'test3', id: 7},{name: 'test3', id: 8},{name: 'test12', id: 9}]; var index = test.findIndex(i => i.name === 'test12');
test map
var test = [{name: 'test1', id: 1}, {name: 'test2', id: 2}, {name: 'test3', id: 3},{name: 'test4', id: 4},{name: 'test3', id: 5},{name: 'test3', id:6},{name: 'test3', id: 7},{name: 'test3', id: 8},{name: 'test12', id: 9}]; var index = test.map(t => t.name).indexOf('test12');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
test find index
test map

Fastest: N/A

Slowest: N/A

Latest run results:

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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 data and explain what's being tested, compared, and their pros/cons.

**Benchmark Definition**

The benchmark definition is not explicitly stated in the JSON data, but it can be inferred from the script preparation code for each test case. It appears that the benchmarks are testing the performance of JavaScript functions that manipulate arrays.

**Options Compared**

There are two main options being compared:

1. **FindIndex**: This function returns the index of a specified element within an array. In the first test case, `test.findIndex(i => i.name === 'test12')`, it searches for the first occurrence of `'test12'` in the array.
2. **IndexOf**: This function returns the index of the first occurrence of a specified element within an array of strings. In the second test case, `test.map(t => t.name).indexOf('test12')`, it maps the `name` property of each object in the array to a new array and then searches for `'test12'` in that array.

**Pros and Cons**

1. **FindIndex**:
	* Pros: Efficient when searching for a specific element, as it only iterates through the array once.
	* Cons: Throws an error if the specified element is not found, and its behavior can be affected by the presence of null or undefined values in the array.
2. **IndexOf**:
	* Pros: Returns -1 if the element is not found, making it more reliable than FindIndex. It also handles null or undefined values in a way that doesn't throw an error.
	* Cons: Less efficient than FindIndex for large arrays, as it creates a new array and then searches for the element.

**Library Usage**

None of the test cases explicitly use any libraries. However, some JavaScript features are used:

1. **Arrow functions**: Used in both test cases to define concise function expressions.
2. **Template literals**: Not explicitly used but implied by the use of string concatenation (`var index = test.findIndex(i => i.name === 'test12');`).
3. **Async/await** (not shown in the JSON data): Since there are no asynchronous operations, this feature is not relevant.

**Special JS Features**

None of the provided features require special JavaScript syntax or features beyond what's discussed above.

**Other Alternatives**

If you wanted to compare these options with alternative approaches:

1. **Array.prototype.reduce()**: Instead of using FindIndex or IndexOf, you could use reduce() to accumulate the index of the first occurrence of a specified element.
2. **For loops**: Manual for loop iterations can be used instead of the built-in functions, but this approach is generally less efficient and less readable.

Keep in mind that these alternatives may not provide better performance or readability benefits for simple array search operations like the ones tested here.

Related benchmarks:

tests test (version: 0)

test

Comparing performance of: test find index vs test map

Created: 4 years ago by: Guest

Jump to the latest result

test find index

test map

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):