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mat get vs has
(version: 0)
Comparing performance of:
with get vs with has
Created:
4 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var m = new Map(); m.set(1,"toto");
Tests:
with get
m.get(1);
with has
m.has(1);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
with get
with has
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Overview of the Benchmark** The provided benchmark, hosted on MeasureThat.net, compares the performance of two methods to access a value in a Map data structure: `get()` and `has()`. A Map is a built-in JavaScript object that stores key-value pairs. **Script Preparation Code** The script preparation code initializes an empty Map `m` with one entry: `m.set(1, "toto")`. This means we have a Map with only one key-value pair, where the key is `1` and the value is `"toto"`. **Options Compared** There are two options being compared: 1. **`get()`**: The `get()` method retrieves the value associated with a given key in the Map. In this case, it will return the value for the key `1`. 2. **`has()`**: The `has()` method checks if a given key exists in the Map. **Pros and Cons of Each Approach** * **`get()`**: + Pros: Returns the actual value associated with the key, which can be useful if you need to perform additional operations on the value. + Cons: May involve more work internally, potentially leading to slower performance compared to `has()`. * **`has()`**: + Pros: Faster and more lightweight than `get()`, as it only checks for the existence of the key without retrieving the associated value. + Cons: Returns a boolean indicating whether the key exists, which might not be what you want if you need to retrieve the actual value. **Library Usage** None. This benchmark does not use any external libraries. **Special JavaScript Feature or Syntax** The `Map` data structure and its methods (`get()`, `has()`, etc.) are a part of the ECMAScript standard, which is supported by most modern JavaScript engines. There are no special features or syntax used in this benchmark beyond what's available in vanilla JavaScript. **Other Alternatives** If you wanted to compare these two operations with other approaches, some alternatives could be: * Using an array instead of a Map (e.g., `m[1]` for `get()` and `in m` for `has()`) * Using a different data structure, like an object or an indexed collection * Implementing your own custom Map-like data structure from scratch Keep in mind that these alternatives would likely change the behavior and purpose of the benchmark significantly.
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