将 Java lambda 转换为 kotlin

Question

  public static Function<List<Object>, Function> required = objects -> (Function<FunctionKeeper, Object>) (wrapper) -> {
    if (LIVRUtils.isNoValue(wrapper.getValue())) {
        return "REQUIRED";
    }
    return "";
};

How do I convert this Java8 lambda approach to Kotlin lambda?

Answer 1

val required = { objects: List<Any> ->
    { wrapper: FunctionKeeper ->
        if (LIVRUtils.isNoValue(wrapper.value)) {
            "REQUIRED"
        } else {
            ""
        }
    }
}

Note that objects is not used in your function.