Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trialChris Sabo
3,970 PointsHomeValue reduction wrong types?
Working on the reduction exercise, I see the following for lowest price
public static OptionalInt getLowestHomeValueIndexDeclaratively(List<HousingRecord> records) {
I got that working no issues, however the method for highest isn't "OptionalInt" its "Optional<HousingRecord>". I can fix this, but then the tests are broken.
I'm not sure if I'm doing this wrong or there's an error in the tests/code.
Vuyolwenkosi Tshuma
4,830 PointsHi Chris, I'm having the same problem and now my progress is on hold
2 Answers
Energy Efficient
Courses Plus Student 92 PointsThere's something wrong with the upload and test feature of this course. As long as your code passes the test and can run the prepareSubmission task then you're good. Don't bang your head on it pass that point like I'm sure many of us already have.
James Sawkins
4,914 PointsI was having the same issue, as I was trying to keep with the provided return statement BUT once I ignored this and mirrored how steams where laid out in the previous lessons, changing it up to match lesson on reduction. it became so much clearer :-)
public static OptionalInt getLowestHomeValueIndexDeclaratively(List<HousingRecord> records) {
// TODO: Create a stream off the records
return records.stream()
// TODO: Map the stream to an IntStream on `HousingRecord.getCurrentHomeValueIndex` to expose new methods
.mapToInt(HousingRecord::getCurrentHomeValueIndex)
// TODO: Return the minimum value from the stream. It should be an optional because records could be empty.
.min();
}
Thomas Salai
4,964 PointsThomas Salai
4,964 PointsCan you post here stacktrace log from the test?