kotlin-stdlib/kotlin/Experimental

Experimental

@Target(allowedTargets = [AnnotationTarget.ANNOTATION_CLASS])
annotation class Experimental(val level: Experimental.Level = Level.ERROR)(source)

Deprecated

Warning since 1.4

Error since 1.6

Please use RequiresOptIn instead.

Signals that the annotated annotation class is a marker of an experimental API.

Any declaration annotated with that marker is considered an experimental declaration and its call sites should accept the experimental aspect of it either by using UseExperimental, or by being annotated with that marker themselves, effectively causing further propagation of that experimental aspect.

This class is deprecated in favor of a more general approach provided by RequiresOptIn/OptIn.

Since Kotlin

1.2

Types

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enum Level : Enum<Experimental.Level>

Severity of the diagnostic that should be reported on usages of experimental API which did not explicitly accept the experimental aspect of that API either by using UseExperimental or by being annotated with the corresponding marker annotation.

Since Kotlin 1.2

Properties

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val level: Experimental.Level
Since Kotlin 1.2