Knowledge Base

Understanding the Fundamentals: Data Types

Core Data Types Explained

Data types define the kind of values a variable can hold and the operations that can be performed on them. They are fundamental to programming, enabling us to represent and manipulate information effectively.

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Integers Numeric

Whole numbers, both positive and negative, without decimal points. Used for counting and precise quantities.

123, -45, 0

Floating-Point Numbers Numeric

Numbers with decimal points, used for approximations and measurements that require precision.

3.14, -0.5, 2.71828
"A"

Strings Text

Sequences of characters, enclosed in quotation marks. Used for text, names, and messages.

"Hello, World!", "Knowledge Base", "123 Main St."
T/F

Booleans Logical

Represents truth values, either true or false. Crucial for conditional logic and decision-making.

true, false
[...]

Arrays/Lists Collection

Ordered collections of items, where each item can be of any data type. Useful for storing multiple related values.

[1, 2, 3], ["apple", "banana", "cherry"]
{ }

Objects/Dictionaries Collection

Unordered collections of key-value pairs. Allow for structured data representation, associating labels with values.

{"name": "Alice", "age": 30}, {"city": "New York", "zip": "10001"}