sneaky-part1-7.java

@SuppressWarnings("unchecked")
public static <T, E extends Exception> T sneakyThrow(Exception e) throws E {
    throw (E) e;
}

public static <T, R> Function<T, R> unchecked(CheckedFunction<T, R> checkedFunction) {
    return t -> {
        try {
            return checkedFunction.apply(t);
        } catch (Exception e) {
            return sneakyThrow(e);
        }
    };
}