Benchmark: iassign sequential vs nested calls

HTML Preparation code:

<script crossorigin src="https://unpkg.com/immutable-assign@2.0.4/deploy/iassign.js"></script>

Script Preparation code:

var state = {
    hasChanged: false,
    name: 'Default state',
    tags: [],
    nested: {
        hasChanged: false,
        name: 'Default nested state',
        tags: [],
        nested: {
            hasChanged: false,
            name: '',
            tags: []
        },
        map: new Map()
    },
    map: new Map()
};

Tests:

sequential calls
const s7 = iassign(state, s => { s.hasChanged = true; return s; }); const s8 = iassign(s7, s => s.nested, nested => { nested.hasChanged = true; return nested; }); const s9 = iassign(s8, s => s.tags, tags => { tags.push('new tag'); return tags; });
nested calls
const s10 = iassign(state, s => { s.hasChanged = true; s.nested = iassign(s.nested, nested => { nested.hasChanged = true; return nested; }); s.tags = iassign(s.tags, tags => { tags.push('new tag'); return tags; }); return s; });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
sequential calls
nested calls

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

**Overview of the Benchmark**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The provided benchmark tests the performance difference between sequential and nested assignment in the Immutable.js library.

**Immutable.js Library**

Immutable.js is a library for working with immutable data structures in JavaScript. It provides a way to create immutable objects that cannot be modified directly, but instead must be recreated with each change. This can improve the performance of applications by reducing unnecessary reassignments of variables.

In this benchmark, Immutable.js is used to compare the performance of sequential assignment (i.e., assigning values one at a time) versus nested assignment (i.e., assigning multiple values within an object).

**Options Compared**

The benchmark compares two approaches:

1. **Sequential Assignment**: This involves assigning values one at a time, where each value is assigned individually and in sequence.
2. **Nested Assignment**: This involves assigning multiple values within an object at once.

**Pros and Cons of Each Approach**

**Sequential Assignment**

Pros:

* Can be easier to read and understand, as the assignment order is explicit.
* May be more suitable for simple assignments where only a few values need to be updated.

Cons:

* Can lead to slower performance due to the overhead of individual assignments.
* May require more code to achieve the same result as nested assignment.

**Nested Assignment**

Pros:

* Can lead to faster performance, as multiple updates are made in one go.
* Requires less code and can make it easier to manage complex data structures.

Cons:

* Can be harder to read and understand, especially for complex assignments.
* May require more memory to store the updated object, depending on its size.

**Other Considerations**

In this benchmark, the `iassign` function from Immutable.js is used to perform both sequential and nested assignment. The `iassign` function takes three arguments: the initial value, a partial function that updates part of the value, and a final function that returns the updated value.

The benchmark uses two test cases:

1. **Sequential Calls**: This test case involves making individual assignments in sequence, using the `iassign` function to update each property individually.
2. **Nested Calls**: This test case involves assigning multiple values within an object at once, using nested calls to update properties and return the updated value.

**Alternative Approaches**

Other approaches could be used to compare performance, such as:

* Using a different library or implementation of assignment (e.g., `assign` from Lodash)
* Comparing performance with and without Immutable.js
* Adding additional complexity to the assignments (e.g., using loops or recursion)

However, the benchmark is designed to focus on the performance difference between sequential and nested assignment within the context of Immutable.js.

I hope this explanation helps! Let me know if you have any further questions.

Latest run results:

Run details: (Test run date: 6 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.79 Safari/537.36

Browser/OS: Chrome 67 on Windows

View result in a separate tab

Test name	Executions per second
sequential calls	123234.5 Ops/sec
nested calls	364814.5 Ops/sec

Related benchmarks:

iassign sequential vs nested calls (version: 0)

Comparing performance of: sequential calls vs nested calls

Created: 6 years ago by: Registered User

Jump to the latest result

sequential calls

nested calls

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):