Struct Header 

pub struct Header {
    pub email_index: usize,
    pub left: Option<Box<Header>>,
    pub right: Option<Box<Header>>,
}

Fields

email_index: usize

left: Option<Box<Header>>

right: Option<Box<Header>>

Trait Implementations

impl Clone for Header

fn clone(&self) -> Header

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Header

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Drop for Header

Iterative drop to avoid a stack overflow when dropping a deep tree.

A large near-sorted mailbox degenerates the ad-hoc BST in structs.rs into a linked list of depth N; Rust’s default derived drop glue for Box<Header> recurses through left/right, so dropping such a tree (e.g. when the EmailStore goes out of scope) would recurse to depth N and could overflow the stack. This unlinks children into an explicit work stack instead.

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.