Benchmark: fp.assign vs fp.set vs spread

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/g/lodash@4(lodash.min.js+lodash.fp.min.js)'></script>

Tests:

fp.assign
const state = { a: '1', b: '2', c: { ca: 1 } }; const report = { c: { cb: 2, }, d: '4', } const newState = _.assign(state, report);
fp.set
const state = { a: '1', b: '2', c: { ca: 1 } }; const report = { c: { cb: 2, }, d: '4', } const newState = _.flow( _.set('c', report.c), _.set('d', report.d), )(state);
spread
const state = { a: '1', b: '2', c: { ca: 1 } }; const report = { c: { cb: 2, }, d: '4', } const newState = { ...state, ...report };

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
fp.assign
fp.set
spread

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

**Benchmark Definition**

The benchmark measures the performance of three different approaches for updating an object:

1. **`_.assign()`**: This method returns a new object with the properties of the original object updated with the properties of another object.
2. **`.fp.set()`**: This method is part of the Lodash library and updates the value of a specific property in an object.
3. **Spread Operator (`{...}`)**: This operator creates a new object by spreading the properties of another object.

**Options Compared**

The benchmark compares the performance of these three approaches:

* `_.assign()`: A general-purpose method for updating objects.
* `.fp.set()`: A specialized method for updating specific properties in an object.
* Spread Operator (`{...}`): A concise way to create a new object by merging two objects.

**Pros and Cons**

Here's a brief summary of each approach:

1. **`_.assign()`**:
	* Pros: Fast, flexible, and supports nested updates.
	* Cons: May not be as readable or intuitive for simple updates.
2. **`.fp.set()`**:
	* Pros: Specialized for updating specific properties, reducing code complexity.
	* Cons: May not work as expected if multiple properties need to be updated together.
3. **Spread Operator (`{...}`)**:
	* Pros: Concise, readable, and easy to use for simple updates.
	* Cons: May lead to more verbose code when dealing with complex updates.

**Library and Special Features**

The benchmark uses Lodash library, specifically the `_.assign()` and `.fp.set()` methods. These methods are part of a larger suite of utility functions that make common programming tasks easier.

**Test Case Analysis**

Each test case creates a sample object `state` and another object `report`, which contains properties to be updated or merged into `state`. The benchmark measures the performance of each approach by executing them in a loop, generating multiple executions per second.

The test cases are designed to showcase the differences between these approaches:

* `fp.assign()` demonstrates its flexibility and speed.
* `.fp.set()` highlights its specialization for specific property updates.
* Spread Operator (`{...}`) showcases its conciseness and readability.

**Other Alternatives**

If you need more control over object updates, you might consider using a library like Immutable.js or using plain JavaScript with methods like `Object.assign()`, `Object.defineProperty()`, or creating your own utility functions. However, these alternatives may come at the cost of additional complexity and performance overhead.

In general, the choice between these approaches depends on your specific use case, personal preference, and the desired trade-offs between code readability, conciseness, and performance.

Related benchmarks:

fp.assign vs fp.set vs spread (version: 0)

Comparing performance of: fp.assign vs fp.set vs spread

Created: 6 years ago by: Registered User

Jump to the latest result

fp.assign

fp.set

spread

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):