Enum dbn::enums::TriState

#[repr(u8)]
pub enum TriState {
    NotAvailable = 126,
    No = 78,
    Yes = 89,
}

An enum for representing unknown, true, or false values. Equivalent to Option<bool> but with a human-readable repr.

Variants

NotAvailable = 126

The value is not applicable or not known.

No = 78

False

Yes = 89

True

Trait Implementations

impl Clone for TriState

fn clone(&self) -> TriState

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TriState

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

Formats the value using the given formatter.

impl Default for TriState

fn default() -> TriState

Returns the “default value” for a type.

impl From<Option<bool>> for TriState

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

Converts to this type from the input type.

impl From<TriState> for Option<bool>

fn from(value: TriState) -> Self

Converts to this type from the input type.

impl From<TriState> for u8

fn from(enum_value: TriState) -> Self

Converts to this type from the input type.

impl HasPyGilRef for TriState

type AsRefTarget = PyCell<TriState>

Utility type to make Py::as_ref work.

impl Hash for TriState

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 IntoEnumIterator for TriState

type Iterator = TriStateIter

fn iter() -> TriStateIter

impl IntoPy<Py<PyAny>> for TriState

fn into_py(self, py: Python<'_>) -> PyObject

Performs the conversion.

impl PartialEq for TriState

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PyClass for TriState

type Frozen = False

Whether the pyclass is frozen.

impl PyClassImpl for TriState

const IS_BASETYPE: bool = false

#[pyclass(subclass)]

const IS_SUBCLASS: bool = false

#[pyclass(extends=…)]

const IS_MAPPING: bool = false

#[pyclass(mapping)]

const IS_SEQUENCE: bool = false

#[pyclass(sequence)]

type BaseType = PyAny

Base class

type ThreadChecker = SendablePyClass<TriState>

This handles following two situations:

type PyClassMutability = <<PyAny as PyClassBaseType>::PyClassMutability as PyClassMutability>::MutableChild

Immutable or mutable

type Dict = PyClassDummySlot

Specify this class has #[pyclass(dict)] or not.

type WeakRef = PyClassDummySlot

Specify this class has #[pyclass(weakref)] or not.

type BaseNativeType = PyAny

The closest native ancestor. This is PyAny by default, and when you declare #[pyclass(extends=PyDict)], it’s PyDict.

fn items_iter() -> PyClassItemsIter

fn doc(py: Python<'_>) -> PyResult<&'static CStr>

Rendered class doc

fn lazy_type_object() -> &'static LazyTypeObject<Self>

fn dict_offset() -> Option<isize>

fn weaklist_offset() -> Option<isize>

impl PyClassNewTextSignature<TriState> for PyClassImplCollector<TriState>

Available on crate feature python only.

fn new_text_signature(self) -> Option<&'static str>

impl<'a, 'py> PyFunctionArgument<'a, 'py> for &'a TriState

type Holder = Option<PyRef<'py, TriState>>

fn extract( obj: &'a Bound<'py, PyAny>, holder: &'a mut Self::Holder ) -> PyResult<Self>

impl<'a, 'py> PyFunctionArgument<'a, 'py> for &'a mut TriState

type Holder = Option<PyRefMut<'py, TriState>>

fn extract( obj: &'a Bound<'py, PyAny>, holder: &'a mut Self::Holder ) -> PyResult<Self>

impl PyMethods<TriState> for PyClassImplCollector<TriState>

Available on crate feature python only.

fn py_methods(self) -> &'static PyClassItems

impl PyTypeInfo for TriState

const NAME: &'static str = "TriState"

Class name.

const MODULE: Option<&'static str> = _

Module name, if any.

fn type_object_raw(py: Python<'_>) -> *mut PyTypeObject

Returns the PyTypeObject instance for this type.

fn type_object(py: Python<'_>) -> &PyType

👎Deprecated since 0.21.0: PyTypeInfo::type_object will be replaced by PyTypeInfo::type_object_bound in a future PyO3 version

Returns the safe abstraction over the type object.

fn type_object_bound(py: Python<'_>) -> Bound<'_, PyType>

Returns the safe abstraction over the type object.

fn is_type_of(object: &PyAny) -> bool

👎Deprecated since 0.21.0: PyTypeInfo::is_type_of will be replaced by PyTypeInfo::is_type_of_bound in a future PyO3 version

Checks if object is an instance of this type or a subclass of this type.

fn is_type_of_bound(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type or a subclass of this type.

fn is_exact_type_of(object: &PyAny) -> bool

👎Deprecated since 0.21.0: PyTypeInfo::is_exact_type_of will be replaced by PyTypeInfo::is_exact_type_of_bound in a future PyO3 version

Checks if object is an instance of this type.

fn is_exact_type_of_bound(object: &Bound<'_, PyAny>) -> bool

Checks if object is an instance of this type.

impl TryFrom<u8> for TriState

type Error = TryFromPrimitiveError<TriState>

The type returned in the event of a conversion error.

fn try_from(number: u8) -> Result<Self, TryFromPrimitiveError<Self>>

Performs the conversion.

impl TryFromPrimitive for TriState

type Primitive = u8

type Error = TryFromPrimitiveError<TriState>

const NAME: &'static str = "TriState"

fn try_from_primitive( number: Self::Primitive ) -> Result<Self, TryFromPrimitiveError<Self>>

impl Copy for TriState

impl Eq for TriState

impl StructuralPartialEq for TriState