Enum MapKey 

pub enum MapKey {
    Int(i64),
    String(SeqString),
    Bool(bool),
}

MapKey: Hashable subset of Value for use as map keys

Only types that can be meaningfully hashed are allowed as map keys: Int, String, Bool. Float is excluded due to NaN equality issues.

Variants

Int(i64)

String(SeqString)

Bool(bool)

Implementations

impl MapKey

pub fn from_value(value: &Value) -> Option<MapKey>

Try to convert a Value to a MapKey Returns None for non-hashable types (Float, Variant, Quotation, Closure, Map)

pub fn to_value(&self) -> Value

Convert MapKey back to Value

Trait Implementations

impl Clone for MapKey

fn clone(&self) -> MapKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MapKey

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

Formats the value using the given formatter.

impl Hash for MapKey

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 MapKey

fn eq(&self, other: &MapKey) -> 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 Eq for MapKey

impl StructuralPartialEq for MapKey