KProperty2
interface KProperty2<D, E, out R> : KProperty<R>, (D, E) -> Rinterface KProperty2<T1, T2, out R> :
KProperty<R>,
(T1, T2) -> RRepresents a property, operations on which take two receivers as parameters, such as an extension property declared in a class.
Parameters
D - the type of the first receiver. In case of the extension property in a class this is
the type of the declaring class of the property, or any subclass of that class.
E - the type of the second receiver. In case of the extension property in a class this is
the type of the extension receiver.
Types
Properties
Functions
get
abstract fun get(receiver1: T1, receiver2: T2): RReturns the current value of the property. In case of the extension property in a class, the instance of the class should be passed first and the instance of the extension receiver second.
abstract fun get(receiver1: D, receiver2: E): RgetDelegate
Returns the value of the delegate if this is a delegated property, or null if this property is not delegated.
See the Kotlin language documentation
for more information.
abstract fun getDelegate(receiver1: D, receiver2: E): Any?invoke
abstract operator fun invoke(p1: T1, p2: T2): RExtension Properties
extensionReceiverParameter
Returns a parameter representing the extension receiver instance needed to call this callable,
or null if this callable is not an extension.
val KCallable<*>.extensionReceiverParameter: KParameter?instanceParameter
Returns a parameter representing the this instance needed to call this callable,
or null if this callable is not a member of a class and thus doesn't take such parameter.
val KCallable<*>.instanceParameter: KParameter?isAccessible
Provides a way to suppress JVM access checks for a callable.
var KCallable<*>.isAccessible: BooleanvalueParameters
Returns parameters of this callable, excluding the this instance and the extension receiver parameter.
val KCallable<*>.valueParameters: List<KParameter>Extension Functions
callSuspend
Calls a callable in the current suspend context. If the callable is not a suspend function, behaves as KCallable.call. Otherwise, calls the suspend function with current continuation.
suspend fun <R> KCallable<R>.callSuspend(
vararg args: Any?
): RcallSuspendBy
Calls a callable in the current suspend context. If the callable is not a suspend function, behaves as KCallable.callBy. Otherwise, calls the suspend function with current continuation.
suspend fun <R> KCallable<R>.callSuspendBy(
args: Map<KParameter, Any?>
): RfindAnnotation
Returns an annotation of the given type on this element.
fun <T : Annotation> KAnnotatedElement.findAnnotation(): T?findParameterByName
Returns the parameter of this callable with the given name, or null if there's no such parameter.
fun KCallable<*>.findParameterByName(
name: String
): KParameter?getExtensionDelegate
Returns the instance of a delegated member extension property, or null if this property is not delegated.
Throws an exception if this is not an extension property.
fun <D> KProperty2<D, *, *>.getExtensionDelegate(
receiver: D
): Any?hasAnnotation
Returns true if this element is annotated with an annotation of type T.
fun <T : Annotation> KAnnotatedElement.hasAnnotation(): Booleanreflect
This is an experimental API. Given a class for a compiled Kotlin lambda or a function expression, returns a KFunction instance providing introspection capabilities for that lambda or function expression and its parameters. Not all features are currently supported, in particular KCallable.call and KCallable.callBy will fail at the moment.
Inheritors
KMutableProperty2
Represents a var-property, operations on which take two receivers as parameters.
interface KMutableProperty2<D, E, R> :
KProperty2<D, E, R>,
KMutableProperty<R>interface KMutableProperty2<T1, T2, R> :
KProperty2<T1, T2, R>,
KMutableProperty<R>