Table of contents📚
- What is a tuple struct❔
- How to create a tuple struct❔
- How to use a tuple struct🤹
- Modifying a tuple struct✏️
Tuple structs🧱
What is a tuple struct❔
Tuple structs are similar to structs, but they are used to group data together in a tuple, and without a name for the fields.
How to create a tuple struct❔
We can create a tuple struct by using the keyword struct and then the name of the struct capitalized, followed by a tuple of the data types of the fields.
struct Color(u8, u8, u8);
// r g b
How to use a tuple struct🤹
We can create an instance of the tuple struct with the following syntax:
let black = Color(0, 0, 0);
We can access the values of the tuple struct by using the dot operator and the index struct.index :
println!("🟥 Red value : {}", black.0);
println!("🟩 Green value : {}", black.1);
println!("🟦 Blue value : {}", black.2);
Output:
🟥 Red value : 0
🟩 Green value : 0
🟦 Blue value : 0
Modifying a tuple struct✏️
By default, like variables, tuple structs are immutable.
So we have to make them mutable by adding the mut keyword before the struct name when creating an instance of it.
// declaring an instance of the tuple struct
let mut black = Color(0, 0, 0);
// modifying the value of the first field
black.0 = 255;