nut 0.1.4

Bolt DB Port in Rust
Documentation 
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use crate::consts::PGID;
use crate::utils::is_aligned;
use std::mem::size_of;

/// BranchPageElement represents a node on a branch page.
#[derive(Debug)]
#[repr(C)]
pub struct BranchPageElement {
    pub pos: u32,
    pub ksize: u32,
    pub pgid: PGID,
}

impl BranchPageElement {
    /// binary struct's size (16)
    pub const SIZE: usize = size_of::<BranchPageElement>();

    /// key returns a byte slice of the node key.
    pub fn key(&self) -> &[u8] {
        debug_assert!(is_aligned(self));
        unsafe {
            std::slice::from_raw_parts(
                (self as *const Self as *const u8).add(self.pos as usize),
                self.ksize as usize,
            )
        }
    }
}