Prab: CSV import

2024-04-19T11:11:04Z

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[[File:Python_3._The_standard_type_hierarchy.png|Python 3. The standard type hierarchy|thumb]] '''Data type''' refers to a classification identifying one of various types of data, such as real, integer, or Boolean, that determines the possible values for that type; the operations that can be done on values of that type; the meaning of the data; and the way values of that type can be stored. Data types are critical in the realm of [[computer programming]], [[computer science]], [[data storage]] and [[data transmission]], providing the foundation for [[data processing]] and [[information management]].

== Overview ==
In [[computer science]], a '''data type''' is an attribute of data which tells the [[compiler]] or [[interpreter]] how the programmer intends to use the data. This concept helps in error checking by ensuring operations and functions are used safely and correctly across different types of data. Data types can be divided into two main categories: primitive data types and non-primitive data types.

=== Primitive Data Types ===
Primitive data types are the basic data types that are built into the programming language. They serve as the building blocks for data manipulation and contain pure, simple values of a data. Common examples include:

* '''[[Integer]]''': Represents whole numbers without a fractional component.
* '''[[Floating-point number|Float]]''': Represents real numbers, allowing for fractional components.
* '''[[Character (computing)|Character]]''': Represents single characters, such as letters, numbers, or symbols.
* '''[[Boolean data type|Boolean]]''': Represents truth values, typically as true or false.

=== Non-Primitive Data Types ===
Non-primitive data types, also known as reference types or composite types, are more complex and can be constructed in a variety of ways from primitive data types. Examples include:

* '''[[Array]]s''': Collections of elements, all of the same data type.
* '''[[String (computer science)|Strings]]''': Sequences of characters representing textual data.
* '''[[Object (computer programming)|Objects]]''': Instances of classes, encapsulating both data and methods to operate on that data.
* '''[[List (abstract data type)|Lists]]''': Ordered collections of elements which can be of different types.

== Type Systems ==
The concept of data types is closely related to the [[type system]] of a programming language, which enforces rules on the operations that can be performed with the data types. Type systems can be classified into:

* '''Static typing''': Where the data type of a variable is known at compile time. Languages like [[C (programming language)|C]], [[C++]], and [[Java (programming language)|Java]] use static typing.
* '''Dynamic typing''': Where the data type of a variable is known at run time. Languages such as [[Python (programming language)|Python]] and [[Ruby (programming language)|Ruby]] use dynamic typing.

== Importance ==
Understanding and using data types effectively is crucial for creating efficient and error-free programs. Proper use of data types can lead to optimization of both memory usage and performance speed. Moreover, it enhances code readability and maintainability by providing clear intentions of how data is supposed to be used.

== See Also ==
* [[Type safety]]
* [[Type conversion]]
* [[Data structure]]
* [[Variable (computer science)]]
* [[Memory management]]

[[Category:Computer programming]]
[[Category:Data types]]
[[Category:Computer science fundamentals]]

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Prab: CSV import