jdecorte-be/42-Containers

Implementation C++ STL containers

📖 Containers

Implementation C++ STL containers

Summary

This is a project to re-implement some C++ STL Containers to understand them.

Some requirements for this project are as follow:

Re-implement (The documents below are written in Korean.)

Mandatory

• std::vector
• std::map
• std::stack
• std::iterators_traits
• std::reverse_iterator
• std::enable_if
• std::is_integral
• std::equal and/or std::lexicographical_compare
• std::pair
• std::make_pair

Bonus

• std::set

What is STL? ^[1]

The Standard Template Library (STL) is a set of C++ template classes to provide common programming data structures and functions such as list, stack, vector, etc ^[1]

STL has four components

• Algorithms
• Containers
• Functions(Functor)
• Iterators

This project is designed to implement a few containers, functions, and iterators in the C++98.

Algorithms

The header algorithm defines a collection of functions especially designed to be used on ranges of elements. They act on containers and provide means for various operations for the contents of the containers. ^[1]

Algorithms

• Sorting
• Searching
• partition
• etc.

Containers

Containers or container classes store objects and data. There are in total 7 standard "first-class" container classes and 3 container adaptor classes and only seven header files that provide access to these containers or container adaptors. ^[1]

sequence containers	container adaptors	associative containers	unordered associative containers(c++11)
implement data structures which can be accessed in a sequential manner.	provide a different interface for sequential containers.	implement sorted data structures that can be quickly searched(O(long n) complexity).	implement unordered data structures that can be quickly searched
vector	queue	set	unordered_set (c++11)
list	priority queue	multiset	unordered_multiset (c++11)
deque	stack	map	unordered_map (c++11)
arrays(c++11)	multimap		unordered_multimap (c++11)
forward lists(c++11)

Flowchart of Adaptive containers and Unordered Containers ^[1]

Flowchart of Sequence containers and Ordered Containers ^[1]

Functions(Functor)

The STL includes classes that overload the function call operator. Instances of such classes are called function objects or functors. Functors allow the working of the associated function to be customized with the help of parameters to be passed. ^[1]

Iterators

As the name suggests, iterators are used for working upon a sequence of values. They are the major feature that allow generality in STL. ^[1]

Reference

index	title	author	last modified	accessed	url status
1	The C++ Standard Template Library (STL)	GeeksforGeeks	19 Nov, 2021	15 May, 2022	ok