Struct History 

pub struct History<T> {
    pub entries: Vec<T>,
    pub redo_entries: Vec<T>,
    pub last_path: Option<String>,
}

The undo history of a form: the records before earlier changes and the records after undone changes, oldest first. The functions of the module take it by reference and return new values.

Fields

entries: Vec<T>

Earlier records, at most HISTORY_LIMIT.

redo_entries: Vec<T>

Records that redo restores, at most HISTORY_LIMIT.

last_path: Option<String>

Path of the last change when it was a value edit.

Trait Implementations

impl<T: Clone> Clone for History<T>

fn clone(&self) -> History<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for History<T>

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

Formats the value using the given formatter.

impl<T: PartialEq> PartialEq for History<T>

fn eq(&self, other: &History<T>) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<T: PartialEq> StructuralPartialEq for History<T>