I have found a bug in the Playground in Ruby.

Question

This error is present both on the web interface and in the mobile application on Android.
It is an example of the bug in a small program with my detailed comments:
https://code.sololearn.com/cuVs0fN1sf8m
I do not know how to report it to the developers.

Answer 1

@Dennis and @Mickel pointed out that there is not a bug. But next time if you do find one, you can email Sololearn at [e-mail] or tell them via the feedback option 😊

Answer 2

There is no bug, gets includes a newline.
+\n is not equal to + so of course the switch won't work.
Use gets.chomp to drop said newline and it works fine.

Answer 3

Dennis is right. In any case, there is another thing you should know. Your case statements work because they are not equivalent to an if statement

case myBar
when 1
some code
when 2
some code

It is equivalent to:

# if var == value is different from if var === value
if myBar === 1
some code
elsif myBar === 2
some code
end

Here you have more information:
https://blog.arkency.com/the-equals-equals-equals-case-equality-operator-in-ruby/

Answer 4

Tap on the three dots on the top right of the screen, tap feedback, change it to bugs, and send it.

Answer 5

Thanks for all! The gets.chomp method works fine.

Answer 6

The issue is that there is a trailing newline character when getting user input. Use the strip function to remove the trailing white space.