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https://github.com/ivanseidel/linkedlist
🔗 A fully implemented LinkedList made to work with general Microcontrollers and Arduino projects
https://github.com/ivanseidel/linkedlist
arduino arduino-library linkedlist mbed
Last synced: about 22 hours ago
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🔗 A fully implemented LinkedList made to work with general Microcontrollers and Arduino projects
- Host: GitHub
- URL: https://github.com/ivanseidel/linkedlist
- Owner: ivanseidel
- License: mit
- Created: 2013-07-20T23:35:28.000Z (over 11 years ago)
- Default Branch: master
- Last Pushed: 2024-06-21T13:57:28.000Z (6 months ago)
- Last Synced: 2024-10-11T11:54:14.414Z (2 months ago)
- Topics: arduino, arduino-library, linkedlist, mbed
- Language: C++
- Homepage:
- Size: 54.7 KB
- Stars: 347
- Watchers: 20
- Forks: 121
- Open Issues: 23
-
Metadata Files:
- Readme: README.md
- License: LICENSE.txt
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README
# LinkedList
This library was developed targeting **`Arduino`** applications. However, works just great with any C++.
Implementing a buffer for objects takes time. If we are not in the mood, we just create an `array[1000]` with enough size.
The objective of this library is to create a pattern for projects.
If you need to use a List of: `int`, `float`, `objects`, `Lists` or `Wales`. **This is what you are looking for.**
With a simple but powerful caching algorithm, you can get subsequent objects much faster than usual. Tested without any problems with Lists bigger than 2000 members.
## Installation
1. [Download](https://github.com/ivanseidel/LinkedList/archive/master.zip) the Latest release from gitHub.
2. Unzip and modify the Folder name to "LinkedList" (Remove the '-version')
3. Paste the modified folder on your Library folder (On your `Libraries` folder inside Sketchbooks or Arduino software).
4. Reopen the Arduino software.
**If you are here, because another Library requires this class, just don't waste time reading bellow. Install and ready.**
## Tests
`cd` to this directory and run `g++ -std=c++14 extras/test/tests.cpp -o tests && ./tests`
-------------------------
## Getting started
### The `LinkedList` class
In case you don't know what a LinkedList is and what it's used for, take a quick look at [Wikipedia::LinkedList](https://en.wikipedia.org/wiki/Linked_list) before continuing.
#### To declare a LinkedList object
```c++
// Instantiate a LinkedList that will hold 'integer'
LinkedList myLinkedList = LinkedList();
// Or just this
LinkedList myLinkedList;
// But if you are instantiating a pointer LinkedList...
LinkedList *myLinkedList = new LinkedList();
// If you want a LinkedList with any other type such as 'MyClass'
// Make sure you call delete(MyClass) when you remove!
LinkedList *myLinkedList = new LinkedList();
```
#### Getting the size of the linked list
```c++
// To get the size of a linked list, make use of the size() method
int theSize = myList.size();
// Notice that if it's pointer to the linked list, you should use -> instead
int theSize = myList->size();
```
#### Adding elements
```c++
// add(obj) method will insert at the END of the list
myList.add(myObject);
// add(index, obj) method will try to insert the object at the specified index
myList.add(0, myObject); // Add at the beginning
myList.add(3, myObject); // Add at index 3
// unshift(obj) method will insert the object at the beginning
myList.unshift(myObject);
```
#### Getting elements
```c++
// get(index) will return the element at index
// (notice that the start element is 0, not 1)
// Get the FIRST element
myObject = myList.get(0);
// Get the third element
myObject = myList.get(2);
// Get the LAST element
myObject = myList.get(myList.size() - 1);
```
#### Changing elements
```c++
// set(index, obj) method will change the object at index to obj
// Change the first element to myObject
myList.set(0, myObject);
// Change the third element to myObject
myList.set(2, myObject);
// Change the LAST element of the list
myList.set(myList.size() - 1, myObject);
```
#### Deleting elements
```c++
// remove(index) will remove and return the element at index
// Remove the first object
myList.remove(0);
// Get and Delete the third element
myDeletedObject = myList.remove(2);
// pop() will remove and return the LAST element
myDeletedObject = myList.pop();
// shift() will remove and return the FIRST element
myDeletedObject = myList.shift();
// clear() will erase the entire list, leaving it with 0 elements
// NOTE: Clear wont DELETE/FREE memory from Pointers, if you
// are using Classes/Poiners, manualy delete and free those.
myList.clear();
```
#### Sorting elements
```c++
// Sort using a comparator function
myList.sort(myComparator);
```
------------------------
## Library Reference
### `ListNode` struct
- `T` `ListNode::data` - The object data
- `ListNode` `*next` - Pointer to the next Node
### `LinkedList` class
**`boolean` methods returns if succeeded**
- `LinkedList::LinkedList()` - Constructor.
- `LinkedList::~LinkedList()` - Destructor. Clear Nodes to minimize memory. Does not free pointer memory.
- `int` `LinkedList::size()` - Returns the current size of the list.
- `bool` `LinkedList::add(T)` - Add element T at the END of the list.
- `bool` `LinkedList::add(int index, T)` - Add element T at `index` of the list.
- `bool` `LinkedList::unshift(T)` - Add element T at the BEGINNING of the list.
- `bool` `LinkedList::set(int index, T)` - Set the element at `index` to T.
- `T` `LinkedList::remove(int index)` - Remove element at `index`. Return the removed element. Does not free pointer memory
- `T` `LinkedList::pop()` - Remove the LAST element. Return the removed element.
- `T` `LinkedList::shift()` - Remove the FIRST element. Return the removed element.
- `T` `LinkedList::get(int index)` - Return the element at `index`.
- `void` `LinkedList::clear()` - Removes all elements. Does not free pointer memory.
- `void` `LinkedList::sort(int (*cmp)(T &, T &))` - Sorts the linked list according to a comparator funcrion. The comparator should return < 0 if the first argument should be sorted before the second, and > 0 if the first argument should be sorted after the first element. (Same as how `strcmp()` works.)
- **protected** `int` `LinkedList::_size` - Holds the cached size of the list.
- **protected** `ListNode` `LinkedList::*root` - Holds the root node of the list.
- **protected** `ListNode` `LinkedList::*last` - Holds the last node of the list.
- **protected** `ListNode*` `LinkedList::getNode(int index)` - Returns the `index` node of the list.
### Version History
* `1.1 (2013-07-20)`: Cache implemented. Getting subsequent objects is now O(N). Before, O(N^2).
* `1.0 (2013-07-20)`: Original release
