Benchmark: Array/Set/Map/Object Iteration 2

Script Preparation code:

var obj = {"one": true, "two": true, "three": true, "four": true, "five": true, "six": true, "seven": true, "eight": true, "nine": true, "ten": true};
var map = new Map([["one", true], ["two", true], ["three", true], ["four", true], ["five", true], ["six", true], ["seven", true], ["eight", true], ["nine", true], ["ten", true]]);

var arr = ["one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"];
var set = new Set(["one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"]);

Tests:

Object Iteration
for (const key in obj) { void(obj[key]); }
Array Iteration
for (const element of arr) { void(element); }
Map Iteration
for (const element of map) { void(element); }
Map Iteration (keys)
for (const element of map.keys()) { void(element); }
Map Iteration (values)
for (const element of map.values()) { void(element); }
Set Iteration
for (const element of set) { void(element); }
Map Iteration for
for (let i=0; i<map.size; i++) { void(map.get(i)); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object Iteration
Array Iteration
Map Iteration
Map Iteration (keys)
Map Iteration (values)
Set Iteration
Map Iteration for

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):

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Let's break down the benchmark and explain what's being tested, compared, and their pros and cons.

**Benchmark Definition**

The benchmark is designed to test the performance of different iteration methods on various data structures:

1. **Object Iteration**: Iterating over the properties of an object using `for (const key in obj)`.
2. **Array Iteration**: Iterating over the elements of an array using `for (const element of arr)`.
3. **Map Iteration**: Iterating over the key-value pairs of a map using `for (const element of map)`.
4. **Map Iteration (keys)**: Iterating over the keys of a map using `for (const element of map.keys())`.
5. **Map Iteration (values)**: Iterating over the values of a map using `for (const element of map.values())`.
6. **Set Iteration**: Iterating over the elements of a set using `for (const element of set)`.
7. **Map Iteration for**: Iterating over the indices of a map using `for (let i=0; i<map.size; i++)`.

**Comparison**

The benchmark compares the performance of different iteration methods, which can affect the execution speed and memory usage:

1. **Plain iteration vs. Object.keys()**: Using `Object.keys()` instead of iterating over the properties directly.
2. **Array.forEach vs. for...of**: Using `Array.forEach` instead of the `for...of` loop.
3. **Map.forEach vs. Array.forEach**: Using `Map.forEach` instead of `Array.forEach`.
4. **Key iteration vs. Value iteration**: Iterating over the keys versus values in a map.

**Pros and Cons**

Here are some pros and cons for each iteration method:

1. **Plain iteration (Object Iteration)**:
	* Pros: Simple, easy to understand, and widely supported.
	* Cons: May be slower due to property access overhead.
2. **Object.keys()**:
	* Pros: Faster than plain iteration, as it avoids property access overhead.
	* Cons: Limited to only iterating over keys, not values or other properties.
3. **Array.forEach**:
	* Pros: Fast and efficient for array iteration.
	* Cons: May not be suitable for map or set iteration.
4. **Map.forEach**:
	* Pros: Faster than Array.forEach for map iteration, as it avoids property access overhead.
	* Cons: Limited to only iterating over key-value pairs.
5. **Key iteration (Map Iteration (keys))**:
	* Pros: Efficient and fast, as it directly iterates over keys.
	* Cons: May not be suitable for value iteration or other scenarios.
6. **Value iteration (Map Iteration (values))**:
	* Pros: Fast and efficient for value iteration.
	* Cons: May not be suitable for key iteration or other scenarios.

**Conclusion**

The benchmark highlights the importance of choosing the right iteration method depending on the specific use case. For example, using `Object.keys()` can provide a performance boost for object iteration, while `Array.forEach` is still the best choice for array iteration. Understanding the pros and cons of each iteration method will help developers make informed decisions when writing code.

**Note**: The benchmark results show that the Chrome browser returns different execution speeds for each test case, with some methods performing better than others.

Related benchmarks:

Array/Set/Map/Object Iteration 2 (version: 0)

Comparing performance of: Object Iteration vs Array Iteration vs Map Iteration vs Map Iteration (keys) vs Map Iteration (values) vs Set Iteration vs Map Iteration for

Created: 2 years ago by: Guest

Jump to the latest result

Object Iteration

Array Iteration

Map Iteration

Map Iteration (keys)

Map Iteration (values)

Set Iteration

Map Iteration for

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):