Usage of Annotation

Obtains the values of annotations on an instance through reflection.

The code is as follows:

import std.reflect.*

main() {
    let ti = TypeInfo.of(Test())
    let annotation = ti.findAnnotation<A>()
    if (let Some(a) <- annotation) {
        println(a.name)
    }
}

@A["Annotation"]
public class Test {}

@Annotation
public class A {
    const A(let name: String) {}
}

The running result is as follows:

Annotation