Enum Variant 

pub enum Variant {
    T4,
    D4,
    T5,
    D5,
}

A game variant: line length (4 or 5) and touch rule (Touching / Disjoint).

Serialised as its two-character code, digit first: "5T", "5D", "4T", "4D" — the convention shared with the wider Morpion Solitaire community.

Variants

T4

4 in a line, touching (parallel lines may share one endpoint).

D4

4 in a line, disjoint (parallel lines must be strictly separate).

T5

5 in a line, touching — the classic variant; world record 178.

D5

5 in a line, disjoint.

Implementations

impl Variant

pub fn line_len(self) -> u8

Line length: 4 or 5.

pub fn disjoint(self) -> bool

Whether parallel collinear lines must be strictly disjoint (no shared point). When false, they may touch at a single endpoint.

pub fn code(self) -> &'static str

The canonical two-character code, digit first ("5T").

pub fn from_code(s: &str) -> Option<Variant>

Parse a code, case-insensitively and in either order ("5T"/"T5").

Trait Implementations

impl Clone for Variant

fn clone(&self) -> Variant

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Variant

impl Debug for Variant

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Variant

fn deserialize<D: Deserializer<'de>>(d: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Display for Variant

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

Formats the value using the given formatter.

impl Eq for Variant

impl Hash for Variant

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 Variant

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Variant

fn serialize<S: Serializer>(&self, s: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Variant