Struct glib::value::BoxedValue
source · [−]pub struct BoxedValue(pub Value);
Tuple Fields
0: Value
Methods from Deref<Target = Value>
sourcepub fn get<'a, T>(
&'a self
) -> Result<T, <<T as FromValue<'_>>::Checker as ValueTypeChecker>::Error> where
T: FromValue<'a>,
pub fn get<'a, T>(
&'a self
) -> Result<T, <<T as FromValue<'_>>::Checker as ValueTypeChecker>::Error> where
T: FromValue<'a>,
Tries to get a value of type T
.
Returns Ok
if the type is correct.
sourcepub fn get_owned<T>(
&self
) -> Result<T, <<T as FromValue<'_>>::Checker as ValueTypeChecker>::Error> where
T: for<'b> FromValue<'b> + 'static,
pub fn get_owned<T>(
&self
) -> Result<T, <<T as FromValue<'_>>::Checker as ValueTypeChecker>::Error> where
T: for<'b> FromValue<'b> + 'static,
Tries to get a value of an owned type T
.
sourcepub fn is<T: StaticType>(&self) -> bool
pub fn is<T: StaticType>(&self) -> bool
Returns true
if the type of the value corresponds to T
or is a sub-type of T
.
sourcepub fn is_type(&self, type_: Type) -> bool
pub fn is_type(&self, type_: Type) -> bool
Returns true
if the type of the value corresponds to type_
or is a sub-type of type_
.
sourcepub fn transform<T: ValueType>(&self) -> Result<Value, BoolError>
pub fn transform<T: ValueType>(&self) -> Result<Value, BoolError>
Tries to transform the value into a value of the target type
Tries to cast the contents of self
into a type appropriate
to store in dest_value
, e.g. to transform a G_TYPE_INT
value
into a G_TYPE_FLOAT
value. Performing transformations between
value types might incur precision lossage. Especially
transformations into strings might reveal seemingly arbitrary
results and shouldn’t be relied upon for production code (such
as rcfile value or object property serialization).
dest_value
Target value.
Returns
Whether a transformation rule was found and could be applied.
Upon failing transformations, dest_value
is left untouched.
Trait Implementations
sourceimpl Deref for BoxedValue
impl Deref for BoxedValue
sourceimpl<'a> FromValue<'a> for BoxedValue
impl<'a> FromValue<'a> for BoxedValue
type Checker = GenericValueTypeOrNoneChecker<BoxedValue>
type Checker = GenericValueTypeOrNoneChecker<BoxedValue>
Value type checker.
sourceunsafe fn from_value(value: &'a Value) -> Self
unsafe fn from_value(value: &'a Value) -> Self
Get the contained value from a Value
. Read more
sourceimpl StaticType for BoxedValue
impl StaticType for BoxedValue
sourcefn static_type() -> Type
fn static_type() -> Type
Returns the type identifier of Self
.
sourceimpl ToValue for BoxedValue
impl ToValue for BoxedValue
sourceimpl ToValueOptional for BoxedValue
impl ToValueOptional for BoxedValue
sourcefn to_value_optional(s: Option<&Self>) -> Value
fn to_value_optional(s: Option<&Self>) -> Value
Convert an Option
to a Value
.
sourceimpl ValueType for BoxedValue
impl ValueType for BoxedValue
type Type = BoxedValue
type Type = BoxedValue
Type to get the Type
from. Read more
impl ValueTypeOptional for BoxedValue
Auto Trait Implementations
impl RefUnwindSafe for BoxedValue
impl !Send for BoxedValue
impl !Sync for BoxedValue
impl Unpin for BoxedValue
impl UnwindSafe for BoxedValue
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> StaticTypeExt for T where
T: StaticType,
impl<T> StaticTypeExt for T where
T: StaticType,
sourcefn ensure_type()
fn ensure_type()
Ensures that the type has been registered with the type system.