2020-05-exceptions-15.java

@FunctionalInterface
interface ExFunction<T, R, E extends Exception> {

    R apply(T t) throws E;
}

<T, R, E extends Exception> Function<T, R> uncheck(ExFunction<T, R, E> fn) {
    return arg -> {
        try {
            return fn.apply(arg);
        }
        catch (Exception e) {
            throw new RuntimeException(e);
        }
    };
}

// Now we can build a stream
public void doWork(List<MyBean> beans) {
    beans.stream()
         .map(uncheck(bean -> ...))
         .forEach(uncheck(item -> ...));
}