Benchmark: switch-range vs if-immediate

HTML Preparation code:

<div class="test"></div>

Script Preparation code:

var metric = 8;

Tests:

switch-range
switch(true){ case (metric < 15): break; case(metric < 30): break; case(metric < 55): break; case(metric < 110): break; case(metric > 110): break default: break; }
if-immediate
if (metric < 15) { } else if (metric < 30) { } else if (metric < 55) { } else if (metric < 110) { } else if(metric > 110) { } else { }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
switch-range
if-immediate

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks and analyze what's being tested on this provided JSON.

**Benchmark Definition**

The benchmark is defined by two test cases:

1. `switch-range`: This test case uses a `switch` statement with multiple cases to evaluate a condition. The switch statement has five cases, each covering a range of values for the `metric` variable.
2. `if-immediate`: This test case uses an `if-else` chain with multiple conditions to evaluate a condition. Each inner `if` statement checks if the `metric` variable falls within a specific range.

**Options Compared**

The two options being compared are:

1. **Switch Statement**: A `switch` statement is used to evaluate the condition by checking the value of the `metric` variable against multiple cases.
2. **If-Else Chain**: An `if-else` chain is used to evaluate the condition by checking the value of the `metric` variable against multiple ranges.

**Pros and Cons**

Here are some pros and cons of each approach:

**Switch Statement (switch-range)**

Pros:

* Can be more efficient than an if-else chain, especially when dealing with a large number of cases.
* Can be more concise and readable for complex logic.

Cons:

* May have performance overhead due to the overhead of jumping between cases.
* Can be slower than other alternatives like if-else chains or lookup tables.

**If-Else Chain (if-immediate)**

Pros:

* Can be faster than switch statements, as it avoids the overhead of case jumps.
* Can be more predictable and easier to understand for simple logic.

Cons:

* May become unwieldy and less readable when dealing with a large number of conditions.
* Can lead to increased code bloat.

**Library and Special JS Features**

There is no specific library mentioned in the benchmark definition. However, the use of `var` keyword for variable declaration suggests that the JavaScript version being tested is likely an older one (e.g., ECMAScript 5).

No special JavaScript features are used in this benchmark.

**Other Alternatives**

Some alternative approaches to the switch statement and if-else chain could be:

* **Lookup Table**: A lookup table can be used to quickly look up values against a set of predefined ranges.
* **Binary Search**: For small ranges, binary search can be an efficient approach.
* **Regular Expressions**: Regular expressions can be used to match patterns in the `metric` variable.

**Benchmark Preparation Code and Test Cases**

The benchmark preparation code is simple and only sets up a single variable `metric` with the value 8. The HTML preparation code creates a basic `<div>` element that will contain the test result.

Each test case consists of a benchmark definition, which defines the logic to be tested, and a test name, which identifies the specific test case being run.

**Latest Benchmark Result**

The latest benchmark result shows two test cases with different execution frequencies (14412117.0 and 14340581.0) for each test case, indicating that the switch statement (switch-range) is slightly faster than the if-else chain (if-immediate).

Related benchmarks:

switch-range vs if-immediate (version: 0)

Comparing performance of: switch-range vs if-immediate

Created: 3 years ago by: Registered User

Jump to the latest result

switch-range

if-immediate

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):