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New Optional Chaining versus _.get lodash
(version: 0)
Comparing performance of:
Optional Chaining vs Lodash
Created:
6 years ago
by:
Guest
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Script Preparation code:
var obj = {a: {b: {c: {d: 1}}}} var badObj = {}
Tests:
Optional Chaining
obj?.a?.b?.c?.d ||2 badObj?.a?.b?.c?.d ||2
Lodash
_.get(obj, "a.b.c.d", 2) _.get(badObj, "a.b.c.d", 2)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
Optional Chaining
Lodash
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what is being tested, compared, and their pros and cons. **What is being tested?** The benchmark compares two approaches to access nested properties in JavaScript objects: 1. **Optional Chaining**: This approach uses the nullish coalescing operator (`??`) to safely navigate through an object's nested properties. If any of the intermediate steps are null or undefined, the expression returns the default value (in this case, 2). 2. **Lodash's _.get() method**: This is a utility function from the Lodash library that provides a way to access nested properties in objects. It takes three arguments: the object to search, a string representing the path to the desired property, and a default value to return if the path is invalid. **Options compared** The benchmark compares two approaches: 1. **Optional Chaining (??)**: This approach uses the nullish coalescing operator (`??`) to safely access nested properties. 2. **Lodash's _.get() method**: This approach uses the Lodash library's utility function to access nested properties. **Pros and Cons** **Optional Chaining (??)** Pros: * More concise and expressive code * Faster performance, as it avoids the overhead of a function call * Works with all modern JavaScript engines Cons: * Not supported in older browsers or environments that don't support the nullish coalescing operator (`??`) **Lodash's _.get() method** Pros: * Works across various platforms and browsers * Provides a clear and explicit way to access nested properties * Can be used with other Lodash utilities Cons: * More verbose code compared to Optional Chaining * Requires the inclusion of the Lodash library, which can add overhead **Library: Lodash** Lodash is a popular JavaScript utility library that provides various functions for tasks such as string manipulation, array operations, and object manipulation. The `_.get()` method is one of its many utility functions that helps access nested properties in objects. **Other considerations** When choosing between Optional Chaining and Lodash's _.get() method, consider the following factors: * Code conciseness and readability: If you prefer more concise code, Optional Chaining might be a better choice. If you prioritize explicitness and clarity, Lodash's _.get() method might be a better fit. * Performance: In most cases, Optional Chaining will have better performance due to its faster function call overhead. * Browser support: If you need to support older browsers or environments that don't support the nullish coalescing operator (`??`), Lodash's _.get() method and the corresponding library inclusion might be a better choice. **Alternatives** Other alternatives for accessing nested properties in JavaScript objects include: 1. Bracket notation (e.g., `obj.a.b.c.d`) 2. Using the `in` operator to check if a property exists before attempting to access it 3. Utilizing other libraries or frameworks that provide similar functionality, such as Moment.js for date manipulation Keep in mind that each approach has its pros and cons, and the choice ultimately depends on your specific use case, performance requirements, and personal preference.
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