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(version: 0)
Comparing performance of:
Length && Callbacks vs Callbacks && Length vs length > callbacks
Created:
8 years ago
by:
Registered User
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Script Preparation code:
var callbacks = "value", length = 0;
Tests:
Length && Callbacks
if(length > 0 && callbacks){ // code }
Callbacks && Length
if(callbacks && length > 0){ // code }
length > callbacks
if(length > 0){ if(callbacks){ // code } }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Length && Callbacks
Callbacks && Length
length > callbacks
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 dive into the world of JavaScript microbenchmarks. **What is being tested?** The provided benchmark measures the execution time of different conditional statements in JavaScript, specifically: * `if(length > 0 && callbacks)`: This statement checks if both `length` and `callbacks` are greater than 0. * `if(callbacks && length > 0)`: This statement checks if either `callbacks` is truthy or `length` is greater than 0. * `if(length > 0) { if(callbacks) { // code } }`: This statement checks if `length` is greater than 0, and if so, it also checks if `callbacks` is truthy. These statements are compared to determine which one is the most efficient in terms of execution time. **Options being compared** The three options being compared are: 1. **Concise vs. Explicit**: The first two statements (`Length && Callbacks` and `Callbacks && Length`) use a concise syntax (&& operator) to check multiple conditions, while the third statement uses an explicit if-else structure. 2. **Short-circuit evaluation**: The second statement uses short-circuit evaluation, which means that if the first condition is false, the entire expression is evaluated as false, without even evaluating the second condition. **Pros and Cons** * **Concise vs. Explicit**: + Pros: Concise syntax can be more readable and efficient in terms of code size. + Cons: Some developers might find concise syntax harder to understand, especially for those not familiar with the language. * **Short-circuit evaluation**: + Pros: Can improve performance by avoiding unnecessary computations when conditions are false. + Cons: Might be less intuitive for some developers who are used to a more explicit approach. **Library usage** There is no apparent library usage in this benchmark. The script preparation code only uses basic JavaScript variables (`callbacks` and `length`) without importing any external libraries. **Special JS features or syntax** None of the test cases use special JavaScript features or syntax, such as ES6 syntax, async/await, or Promises. **Other alternatives** For similar benchmarks, you can consider using other testing frameworks like: * Benchmark.js: A popular benchmarking library for Node.js and browser environments. * jsperf.com: A simple online benchmarking tool that allows you to compare the performance of different JavaScript code snippets. * Microbenchmark.net: Another online benchmarking tool that provides a simple way to compare the execution time of different JavaScript code snippets. Keep in mind that these alternatives might have slightly different features and use cases compared to MeasureThat.net.
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