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isEmpty from lodash
(version: 0)
Comparing performance of:
lodash vs non-lodash
Created:
7 years ago
by:
Registered User
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HTML Preparation code:
<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>
Script Preparation code:
var props = {data: {foo: {bar: '4'}}};
Tests:
lodash
_.isEmpty(props.data.foo.bar)
non-lodash
props.data && props.data.foo && props.data.foo.bar
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
lodash
non-lodash
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of MeasureThat.net and explore what's being tested in this JavaScript microbenchmark. **Benchmark Overview** The benchmark is testing two different approaches to check if a property exists in an object, specifically `foo.bar` in the `props.data` object. The two approaches are: 1. Using the Lodash library (`lodash` test case) 2. Not using any external libraries (`non-lodash` test case) **Lodash Library** The Lodash library is a popular JavaScript utility library that provides various functions for manipulating and transforming data. In this benchmark, the `_.isEmpty()` function is used to check if an object is empty or has no properties. In the `lodash` test case, the `props.data.foo.bar` expression is passed as an argument to the `_.isEmpty()` function. This checks if `foo.bar` is an empty object or not. **Non-Lodash Approach** The `non-lodash` approach simply checks if `props.data` exists and if `props.data.foo` exists, and then checks if `props.data.foo.bar` exists. If any of these checks fail, the property does not exist. Here are some pros and cons of each approach: **Lodash Approach (Pros: Cons)** * Pros: + Concise and expressive code + Easy to read and understand + Fast execution due to optimized library functions * Cons: + Requires additional library dependencies (Lodash) + May have slower initial setup times compared to non-Lodash approach **Non-Lodash Approach (Pros: Cons)** * Pros: + No external dependencies required + Fast execution due to simple and direct checks + Easy to implement without additional libraries * Cons: + Code may be more verbose and harder to read + Requires explicit checks for each property existence, which can lead to slower execution times **Other Considerations** When writing JavaScript benchmarks, it's essential to consider factors such as: * Code readability and maintainability * Performance (execution speed) and accuracy * Code simplicity and conciseness * Test coverage and robustness In this case, both approaches have their trade-offs. The Lodash approach is concise and expressive but requires additional library dependencies. The non-Lodash approach is lightweight and fast but may be more verbose. **Device-Specific Considerations** The benchmark results show that the `non-lodash` approach outperforms the `lodash` approach on Firefox 65 running on Windows 7 Desktop devices, with an execution speed of 770.5 executions per second compared to 232.3 executions per second for the Lodash test case. This may be due to various device-specific factors such as: * Different hardware configurations * Optimized JavaScript engine implementations * Browser-specific optimizations or limitations **Other Alternatives** If you're looking for alternative approaches to check if a property exists in an object, consider using: * `in` operator (e.g., `if (props.data.foo.bar in props.data)`): This is a built-in operator that checks if a property exists in the given object. * `Object.prototype.hasOwnProperty.call()` method: This method checks if a property exists in the given object and returns a boolean value. Keep in mind that these alternatives may have different performance characteristics compared to the Lodash or non-Lodash approaches.
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