pub struct GlobalRef(_);Expand description
Reference to a global variable (See GlobalInstance for details).
This reference has a reference-counting semantics.
Methods from Deref<Target = GlobalInstance>
sourcepub fn set(&self, val: RuntimeValue) -> Result<(), Error>
pub fn set(&self, val: RuntimeValue) -> Result<(), Error>
Change the value of this global variable.
Errors
Returns Err if this global isn’t mutable or if
type of val doesn’t match global’s type.
sourcepub fn get(&self) -> RuntimeValue
pub fn get(&self) -> RuntimeValue
Get the value of this global variable.
sourcepub fn is_mutable(&self) -> bool
pub fn is_mutable(&self) -> bool
Returns if this global variable is mutable.
Note: Imported and/or exported globals are always immutable.
sourcepub fn value_type(&self) -> ValueType
pub fn value_type(&self) -> ValueType
Returns value type of this global variable.
Trait Implementations
sourceimpl Deref for GlobalRef
impl Deref for GlobalRef
type Target = GlobalInstance
type Target = GlobalInstance
The resulting type after dereferencing.
sourcefn deref(&self) -> &GlobalInstance
fn deref(&self) -> &GlobalInstance
Dereferences the value.
Auto Trait Implementations
impl !RefUnwindSafe for GlobalRef
impl !Send for GlobalRef
impl !Sync for GlobalRef
impl Unpin for GlobalRef
impl !UnwindSafe for GlobalRef
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
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
impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
Convert
Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can
then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read morefn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert
Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be
further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read morefn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Convert
&Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &Any’s vtable from &Trait’s. Read morefn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert
&mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot
generate &mut Any’s vtable from &mut Trait’s. Read more