Constants

Constants in C++

Learn what constants are in C++, the different ways to define them (const, #define, constexpr), and when to use each.

Constants in C

Understand C constants: literals, #define, const keyword, enumeration constants, and how to use each correctly.

Constants (final keyword) in Java

Learn how to declare constants in Java using the final keyword, and understand its use with variables, methods, and classes.

Constants and iota in Go

Understand how const declarations work in Go and how iota generates auto-incrementing enumerated constants.

Constants and Shadowing in Rust

Understand Rust constants declared with const and the concept of variable shadowing with let.

Variables and Constants in Swift

Learn how Swift's var and let keywords declare mutable variables and immutable constants, and why let is preferred by default.