Onebite.dev
Developer tips & trick, one bite at a time
Learn what data types are available in Rust.
It also has two subsets: a scalar data type and a compound data type.
Rust is a statically typed language. It must know the data type of each variable at compile time.
A scalar type used for single value.
Rust has four scalar types (primary):
Find more detail here
A compound types can represents group of multiple values.
Rust has 2 primitive compound types:
A group of values with different types can be compounded into a tuple.
let tup: (i32, f64, u8) = (500, 6.4, 1); //explicit
let tup = (500, 6.4, 1); //simple
How to get value from a tuple (destructing way)
let (x, y, z) = tup;
How to get value from a tuple (by index/index) by (name(dot)order)
let x: (i32, f64, u8) = (500, 6.4, 1);
let five_hundred = x.0;
let six_point_four = x.1;
let one = x.2;
A group of values with same type.
let a = [1, 2, 3, 4, 5];
//or
let months = ["January", "February", "March", "April", "May", "June", "July",
"August", "September", "October", "November", "December"];
If you want a flexible number of items (length can grow or shrink, use vector)
let a = [3; 5];
same as
let a = [3, 3, 3, 3, 3];
Using the index in square bracket
let a = [1, 2, 3, 4, 5];
let first = a[0];
let second = a[1];
This is a post in the start learning Rust series.