Struct BooleanDefaultTrue 

pub struct BooleanDefaultTrue(pub Option<bool>);

Boolean that defaults to true when None.

A newtype around Option<bool> that dereferences to true when the inner value is None or Some(true). Serializes transparently as Option<bool> on the wire and in JSON.

Tuple Fields

0: Option<bool>

Implementations

impl BooleanDefaultTrue

pub fn is_none(&self) -> bool

Returns true if the inner value is None. Used by serde skip_serializing_if to omit fields that were absent in the source JSON (or constructed via none()), matching TS’s JSON.stringify(undefined) omission. Explicit Some(true) / Some(false) round-trip as true / false.

pub fn none() -> Self

Constructs the “absent” representation: Self(None).

Used as a serde default for missing-field deserialization so the distinction between “field absent” (round-trips as omitted) and “field present at default value” (round-trips as the explicit value) is preserved. Default::default() still returns Self(Some(true)) for runtime convenience — None is reserved for the wire-absent state.

Trait Implementations

impl Clone for BooleanDefaultTrue

fn clone(&self) -> BooleanDefaultTrue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BooleanDefaultTrue

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

Formats the value using the given formatter.

impl Default for BooleanDefaultTrue

fn default() -> Self

Returns the “default value” for a type.

impl Deref for BooleanDefaultTrue

type Target = bool

The resulting type after dereferencing.

fn deref(&self) -> &bool

Dereferences the value.

impl From<BooleanDefaultTrue> for Option<bool>

fn from(v: BooleanDefaultTrue) -> Self

Converts to this type from the input type.

impl From<Option<bool>> for BooleanDefaultTrue

fn from(v: Option<bool>) -> Self

Converts to this type from the input type.

impl PartialEq for BooleanDefaultTrue

fn eq(&self, other: &BooleanDefaultTrue) -> 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 StructuralPartialEq for BooleanDefaultTrue