Annotations

Annotation Declaration

Annotations are means of attaching metadata to code. To declare an annotation, put the annotation modifier in front of a class:

annotation class Fancy

Additional attributes of the annotation can be specified by annotating the annotation class with meta-annotations:

@Target specifies the possible kinds of elements which can be annotated with the annotation (classes, functions, properties, expressions etc.);
@Retention specifies whether the annotation is stored in the compiled class files and whether it's visible through reflection at runtime (by default, both are true);
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