Struct ShapeId 

pub struct ShapeId(/* private fields */);

A shape’s identity: the ordinal a figure is drawn under, and what a buffer records beside each cell that figure decided.

Built from its ordinal by ShapeId::new and written back out as the bare number, 1 and 2 and so on. It is Copy, and it carries one rule of its own: zero is not an identity.

Implementations

impl ShapeId

pub fn new(ordinal: NonZeroU16) -> Self

Builds an identity from its ordinal — 1, 2, and so on.

The NonZeroU16 is the rule that 0 is not an identity, so a caller cannot ask for one: what a plain number would have to be checked for is instead a type a zero cannot have.

Trait Implementations

impl Clone for ShapeId

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ShapeId

impl Debug for ShapeId

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

Formats the value using the given formatter.

impl Display for ShapeId

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

Writes the ordinal and nothing else — 1, 2, and so on.

impl Eq for ShapeId

impl Hash for ShapeId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ShapeId

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ShapeId