Benchmark: Switch vs Object Literal large

Script Preparation code:

var str = 'abcdefghijklmnopqrstuvw';
str = str.charAt(Math.floor(Math.random() * 22));

Tests:

Switch
switch (str) { case 'a': console.log('A'); break; case 'b': console.log('B'); break; case 'c': console.log('C'); break;; case 'd': console.log('D'); break;; case 'e': console.log('E'); break;; case 'f': console.log('F'); break;; case 'g': console.log('G'); break;; case 'h': console.log('H'); break;; case 'i': console.log('I'); break;; case 'j': console.log('J'); break;; case 'k': console.log('K'); break;; case 'l': console.log('L'); break;; case 'm': console.log('M'); break;; case 'n': console.log('N'); break;; case 'o': console.log('O'); break;; case 'p': console.log('P'); break;; case 'q': console.log('Q'); break;; case 'r': console.log('R'); break;; case 's': console.log('S'); break;; case 't': console.log('T'); break;; case 'u': console.log('U'); break;; case 'v': console.log('V'); break;; case 'w': console.log('W'); break; }
Object Literal
var objLiteral = { a: function() { console.log('A'); }, b: function() { console.log('B'); }, c: function() { console.log('C'); }, d: function() { console.log('D'); }, e: function() { console.log('E'); }, f: function() { console.log('F'); }, g: function() { console.log('G'); }, h: function() { console.log('H'); }, i: function() { console.log('I'); }, j: function() { console.log('J'); }, k: function() { console.log('K'); }, l: function() { console.log('L'); }, m: function() { console.log('M'); }, n: function() { console.log('N'); }, o: function() { console.log('O'); }, p: function() { console.log('P'); }, q: function() { console.log('Q'); }, r: function() { console.log('R'); }, s: function() { console.log('S'); }, t: function() { console.log('T'); }, u: function() { console.log('U'); }, v: function() { console.log('V'); }, w: function() { console.log('W'); }, } objLiteral[str]();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Switch
Object Literal

Fastest: N/A

Slowest: N/A

Latest 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 break down what is tested in the provided benchmark and explain the differences between the two approaches.

**Benchmark Definition**

The benchmark compares the execution performance of two approaches: `switch` statements and object literals with function calls.

**Switch Statement**

A `switch` statement is a control structure that allows you to execute different blocks of code based on the value of a variable. In this case, the variable is the first character of the string `str`. The `switch` statement has several cases, each corresponding to a specific character in the string.

**Object Literal with Function Calls**

An object literal is an object created using the `{}` syntax, where each key-value pair represents a property of the object. In this case, the object `objLiteral` has functions as values for each property. When you call an object property like `objLiteral[str]`, it executes the corresponding function.

**Comparison**

The benchmark tests which approach is faster: using a `switch` statement or calling an object literal with a function.

**Options Compared**

Two options are compared:

1. **Switch Statement**: This involves executing a series of cases based on the value of the variable.
2. **Object Literal with Function Calls**: This involves creating an object and accessing its properties like functions.

**Pros and Cons**

Here's a brief summary of the pros and cons of each approach:

* **Switch Statement**
	+ Pros:
		- Can be faster for small strings, since it avoids the overhead of function lookups.
		- Often easier to read and maintain than object literals.
	+ Cons:
		- Can be slower for larger strings, since it requires a separate case for each possible value.
		- Limited flexibility if you need to add more cases or change the logic later.
* **Object Literal with Function Calls**
	+ Pros:
		- More flexible and easier to extend than `switch` statements.
		- Can be faster for larger strings, since it avoids the overhead of separate case statements.
	+ Cons:
		- Often harder to read and maintain than `switch` statements.
		- May incur a performance penalty due to function lookups.

**Other Considerations**

When choosing between these two approaches, consider the following:

* **String Length**: If you're working with short strings, a `switch` statement might be faster. For larger strings, an object literal with function calls might be more efficient.
* **Code Readability**: If readability is important, an object literal with function calls might not be the best choice due to its complexity and verbosity.

**Alternative Approaches**

Other alternatives to these two approaches include:

* **Regular Expressions**: Instead of using a `switch` statement or object literals, you could use regular expressions to match against the string.
* **Arrays or Arrays of Functions**: You could store an array of functions and call each one based on a specific index.

Keep in mind that the best approach depends on your specific use case and performance requirements.

Related benchmarks:

Switch vs Object Literal large (version: 0)

Comparing performance of: Switch vs Object Literal

Created: 5 years ago by: Guest

Jump to the latest result

Switch

Object Literal

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):