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Lodash omit vs delete in a
(version: 0)
Comparing performance of:
Delete in a vs Lodash omit in a
Created:
2 years ago
by:
Guest
Go to the latest result
HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Tests:
Delete in a
let a = { "name": "john doe", "isNew": true }; if ("isNew" in a) {delete a["isNew"];}
Lodash omit in a
let a = { "name": "john doe", "isNew": true }; _.omit(a, ["isNew"]);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Delete in a
Lodash omit in a
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 17_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Mobile/15E148 Safari/604.1
Browser/OS:
Mobile Safari 17 on iOS 17.5.1
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=534771" width="100%" height="500px"></iframe>
Delete in a
437.9M/s
Lodash omit in a
3.1M/s
View exact numbers
Test name
Executions per second
✓
Delete in a
437,886,400 Ops/sec
Lodash omit in a
3,053,259 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into explaining the benchmark and its options. **Benchmark Overview** The provided JSON represents a JavaScript microbenchmark on MeasureThat.net, which compares the performance of two approaches: deleting a property from an object using the `delete` operator versus using the `_omit` function from the Lodash library. **Options Compared** Two options are compared: 1. **Delete Operator**: The first option uses the `delete` operator to delete the "isNew" property from the object `a`. This approach is straightforward and typically used in JavaScript. 2. **Lodash Omit Function**: The second option uses the `_omit` function from Lodash to exclude the "isNew" property from the object `a`. Lodash is a popular utility library that provides functional programming helpers. **Pros and Cons of Each Approach** 1. **Delete Operator** * Pros: + Simple and intuitive + No additional dependencies required * Cons: + May not be as efficient or concise as other approaches, especially for large objects + Can lead to issues if the property name is not a string (e.g., using a numeric index) 2. **Lodash Omit Function** * Pros: + More concise and readable than the `delete` operator + Reduces the risk of errors due to property names being strings or numbers * Cons: + Requires an additional dependency on Lodash (although it's often included in many projects) + May have a slight overhead due to the function call **Lodash Library** The `_omit` function is part of the Lodash library, which provides a set of utility functions for functional programming. In this context, `_omit` takes an object and an array of property names as arguments, returning a new object with the specified properties removed. **Other Considerations** When choosing between these two approaches, consider the specific requirements of your project: * If you need to delete properties frequently or in complex scenarios, the Lodash `omit` function might be more suitable due to its concise syntax and reduced risk of errors. * However, if performance is a top concern and you're working with very large objects or simple use cases, the `delete` operator might be sufficient. **Alternative Approaches** Other alternatives to consider: 1. **Object.keys()**: You can iterate over the object's property names using `Object.keys()` and then delete each one individually. 2. **For...in Loop**: Similar to the `delete` operator, you can use a `for...in` loop to remove properties from an object. 3. **Set**: In modern browsers (and Node.js), you can use a `Set` data structure to create a new object without specified properties. Keep in mind that these alternatives might have different performance characteristics and may not be as concise or readable as the `delete` operator or Lodash's `_omit` function.
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