Enum TruthinessKind 

pub enum TruthinessKind {
    AlwaysTruthy,
    AlwaysFalsy,
    Sometimes,
    Unknown,
}

Classification of a type’s truthiness behavior.

Variants

AlwaysTruthy

Always truthy (non-empty object, non-zero number, etc.)

AlwaysFalsy

Always falsy (0, “”, null, undefined, false)

Sometimes

Could be either (union of truthy and falsy)

Unknown

Unknown truthiness (any, unknown)

Trait Implementations

impl Clone for TruthinessKind

fn clone(&self) -> TruthinessKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TruthinessKind

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

Formats the value using the given formatter.

impl PartialEq for TruthinessKind

fn eq(&self, other: &TruthinessKind) -> 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 Copy for TruthinessKind

impl Eq for TruthinessKind

impl StructuralPartialEq for TruthinessKind