Enum ValueKey 

pub enum ValueKey {
    Int(i64),
    BigInt(BigInt),
    Rational(BigInt, BigInt),
    Float(u64),
    Str(String),
    Char(char),
    Bool(bool),
    Symbol(u32),
    Expr(u32),
}

Hashable key for Dict/Set (spec §11.6): a value-semantic, immutable subset of Value — numbers (canonicalized), strings, chars, bools, and symbol/expr handles.

Variants

Int(i64)

BigInt(BigInt)

Rational(BigInt, BigInt)

Float(u64)

Str(String)

Char(char)

Bool(bool)

Symbol(u32)

Expr(u32)

Implementations

impl ValueKey

pub fn from_value(v: &Value) -> Option<ValueKey>

Convert a Value to a hashable key, or None if the value is not a valid key type (complex numbers, arrays, dicts, sets, class instances, etc. → None; NaN → None).

pub fn to_value(&self) -> Value

Reconstruct the corresponding Value (numeric keys produce Number, Symbol produces Value::Symbol, Expr produces Value::Expr).

Trait Implementations

impl Clone for ValueKey

fn clone(&self) -> ValueKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ValueKey

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

Formats the value using the given formatter.

impl Eq for ValueKey

impl Hash for ValueKey

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 ValueKey

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ValueKey