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Ternary vs Something
(version: 0)
Comparing performance of:
Ternary vs Other
Created:
6 years ago
by:
Guest
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Script Preparation code:
var a = "0398123312_dfuhsdfoiusadfhoisudfh_fdsaiuh29";
Tests:
Ternary
var result = a ? a.split('_')[1] : null
Other
var result = (a && a.split('_')[1]) || null
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Ternary
Other
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 benchmark and explain what is being tested. **Benchmark Definition** The benchmark definition is a simple JavaScript expression that takes a string variable `a` as input and returns either a split result or null, depending on whether `a` contains an underscore. The two expressions being compared are: 1. `var result = a ? a.split('_')[1] : null` 2. `var result = (a && a.split('_')[1]) || null` **Options being compared** The two options being compared are the use of a ternary operator (`?`) versus an explicit conditional statement with logical OR (`||`). **Pros and Cons of each approach** **Ternary Operator (`?`):** Pros: * More concise and readable * Can be more expressive, as it allows for a single expression to evaluate to multiple values Cons: * May be less intuitive or familiar to some developers * Can lead to errors if the expression is not properly formatted (e.g., missing parentheses) **Explicit Conditional Statement (`||`):** Pros: * More explicit and easier to understand * Less prone to errors, as it forces a clear separation between conditions Cons: * Longer and less concise than the ternary operator * May require more whitespace and indentation to maintain readability **Other considerations** The benchmark is designed to measure the performance difference between these two approaches. The use of `?` can lead to shorter execution paths in some cases, which may result in faster performance. However, this also depends on the specific JavaScript engine being used, as some engines may optimize for clarity over brevity. **Library and special features** In this benchmark, there is no explicit library or framework mentioned. The code snippet only uses built-in JavaScript features. **Special JS feature/syntax** The use of the ternary operator (`?`) is a relatively modern JavaScript syntax introduced in ECMAScript 2015 (ES6). While it's widely supported by most modern browsers and engines, some older versions may not recognize or optimize for this syntax. **Alternatives** If you wanted to benchmark similar expressions without using a ternary operator, you could consider alternatives like: * `if` statements with explicit conditionals * Boolean literals (e.g., `true` vs. `false`) * Function calls with conditional arguments (e.g., `a ? function() { return a.split('_')[1]; }()`) Keep in mind that these alternatives might change the expression's behavior or readability, which could affect the benchmark results. In summary, this benchmark tests the performance difference between two approaches to conditionally execute code based on the presence of an underscore in a string. The use of a ternary operator is a concise and readable way to express this logic, but its performance can vary depending on the JavaScript engine being used.
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