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MPL-2.0 - Mozilla Public License 2.0An owned slice that packs the slice storage into a single word when possible.
extern crate thin_slice;
use std::mem;
use thin_slice::ThinBoxedSlice;
struct Ticket {
numbers: Box<[u8]>,
winning: bool,
}
struct ThinTicket {
numbers: ThinBoxedSlice<u8>,
winning: bool,
}
fn main() {
let nums = vec![4, 8, 15, 16, 23, 42].into_boxed_slice();
let ticket = ThinTicket {
numbers: nums.into(),
winning: false,
};
println!("Numbers: {:?}", ticket.numbers);
println!("size_of::<usize>(): {}", mem::size_of::<usize>());
println!("size_of::<Ticket>(): {}", mem::size_of::<Ticket>());
println!("size_of::<ThinTicket>(): {}", mem::size_of::<ThinTicket>());
}Output on x86_64:
Numbers: [4, 8, 15, 16, 23, 42]
size_of::<usize>(): 8
size_of::<Ticket>(): 24
size_of::<ThinTicket>(): 16
thin-slice is distributed under the terms of the Mozilla Public License, v. 2.0.