Struct Range 

pub struct Range {
    pub anchor: usize,
    pub head: usize,
}

A selection with a fixed anchor and a moving head, in char offsets.

head < anchor is legal and means the selection was dragged backwards — the direction is information (it decides which end moves next), so it is preserved rather than normalized away.

Fields

anchor: usize

head: usize

Implementations

impl Range

pub fn new(anchor: usize, head: usize) -> Self

pub fn point(at: usize) -> Self

A zero-width range — an ordinary cursor.

pub fn is_empty(&self) -> bool

pub fn start(&self) -> usize

pub fn end(&self) -> usize

pub fn len(&self) -> usize

pub fn map(&self, changes: &ChangeSet) -> Self

Carry this range through a change made elsewhere in the document.

The head maps with Assoc::After so that typing at the cursor pushes it along rather than leaving it stranded behind the character just inserted.

Trait Implementations

impl Clone for Range

fn clone(&self) -> Range

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Range

impl Debug for Range

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

Formats the value using the given formatter.

impl Eq for Range

impl PartialEq for Range

fn eq(&self, other: &Range) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Range