// Investigating the size of things in Rust.
// In particular the size of structs, arrays and vectors
// ggtowell
// Nov 2023

use std::mem;
fn main() {
    println!("Hello, world!");
    println!("i32 {}", mem::size_of::<i32>());
    println!("f64 {}", mem::size_of::<f64>());
    

    println!("[i32;2] {}]", mem::size_of::<[i32; 2]>());
    println!("[i32;3] {}", mem::size_of::<[i32; 3]>());

    println!("[i8;2] {}]", mem::size_of::<[i8; 2]>());
    println!("[i8;3] {}", mem::size_of::<[i8; 3]>());


// Pointer size 
println!("raw pointer {}", mem::size_of::<*const i32>());

struct FieldStruct {
    first: u8,
    second: u16,
    third: u8,
}
println!("struct {}", mem::size_of::<FieldStruct>());

println!("Vec<i32> {}", mem::size_of::<Vec<i32>>());
println!("Vec<i128> {}", mem::size_of::<Vec<i128>>());
}