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length
(version: 0)
Comparing performance of:
length vs length2
Created:
6 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var coiso = [];
Tests:
length
for (let i = 0; coiso.length < 100000; i++) { coiso.push(i); }
length2
let len = coiso.length for (let i = 0; len < 100000; i++) { coiso.push(i); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
length
length2
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON and explain what's being tested, compared, and discussed. **Benchmark Definition** The benchmark definition provides two approaches to create an array of 100,000 elements using the `coiso` variable: 1. **Loop with incremental length**: The first approach uses a loop that pushes elements onto the `coiso` array until its length reaches 100,000. 2. **Pre-initialized length and then loop**: The second approach initializes the `coiso` array with its desired length (100,000) and then uses a loop to push elements onto it. **Options Compared** The two approaches are compared in terms of performance, which is measured by the number of executions per second. **Pros and Cons** 1. **Loop with incremental length**: * Pros: Simplistic and easy to understand. * Cons: May lead to slower performance due to repeated checks on the array length. 2. **Pre-initialized length and then loop**: * Pros: Can be faster since it avoids repeated checks on the array length. * Cons: Requires initializing a large array, which can be memory-intensive. **Considerations** When choosing between these approaches, consider the specific requirements of your project. If performance is critical and you're working with large datasets, using a pre-initialized length might be beneficial. However, if simplicity and readability are more important, the loop with incremental length might be a better choice. **Library: `coiso`** The `coiso` variable is not a specific JavaScript library but rather a custom array used in both benchmark definitions. Its purpose is to serve as an example array that can be extended or modified during the benchmark. **No Special JS Features or Syntax** There are no special JavaScript features or syntax used in these benchmark definitions, such as async/await, promises, or ES6+ syntax. **Other Alternatives** If you'd like to explore other approaches or compare different JavaScript arrays, consider using: * `Array.from()`: Creates a new array from an iterable. * `Array.concat()`: Merges one or more arrays into a single array. * `Set`: A collection of unique values that can be used for efficient lookups. Keep in mind that the choice of approach will depend on your specific requirements and performance needs.
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