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Test pass-first efficiency
(version: 0)
Comparing performance of:
pass first vs pass last
Created:
5 years ago
by:
Guest
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Tests:
pass first
if(true || false || false || false){ return true; }
pass last
if(false || false || false || true){ return true; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
pass first
pass last
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to explain the JavaScript microbenchmark on MeasureThat.net. **Benchmark Description** The benchmark is designed to test the efficiency of evaluating a conditional statement with multiple `true` or `false` values in an "or" expression. The benchmark consists of two individual test cases: 1. "pass first": This test case evaluates an if-statement that checks for `true || false || false || false`. Since the first value is `true`, the entire condition becomes `true`. 2. "pass last": This test case evaluates an if-statement that checks for `false || false || false || true`. The values are evaluated from left to right, and since the last value is `true`, the entire condition becomes `true`. **Options Compared** The benchmark compares two approaches: 1. **Passing from left to right**: In this approach, each value in the "or" expression is evaluated from left to right. 2. **Passing from right to left**: This approach evaluates values from right to left. **Pros and Cons of Each Approach** **Passing from Left to Right:** Pros: * More intuitive for developers who are familiar with the traditional if-statement syntax. * Can be easier to understand for people who are not experienced with JavaScript. Cons: * In some cases, it can lead to unnecessary computations when a value is `true` and subsequent values become irrelevant. **Passing from Right to Left:** Pros: * Avoids unnecessary computations by short-circuiting as soon as a `true` value is encountered. * Can be more efficient in terms of performance, especially for large expressions with multiple `false` values. Cons: * May require additional explanation and understanding for developers who are not familiar with this syntax. * The syntax can look less intuitive to some people. **Library Used** There is no library explicitly mentioned in the benchmark definition. However, the benchmark code does use basic JavaScript functionality, such as the if-statement and the "or" operator. **Special JS Feature or Syntax** This benchmark uses a feature of JavaScript called short-circuit evaluation, which allows the engine to optimize expressions by evaluating them from left to right only when necessary. This is an optimization technique that helps prevent unnecessary computations. **Other Alternatives** If you're interested in exploring more microbenchmarks or testing different programming languages, MeasureThat.net also offers benchmarks for other topics, such as: * Array operations * Object manipulation * Regular expressions * String concatenation * and many more! Keep in mind that the availability of benchmark results might vary depending on the specific topic or language you're interested in testing.
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