Playground displays no results in debug or result area

Did you create a new project ? Or reuse an existing one ?

Unless you've already done this - start a new playground using the iOS games template, then wait while it runs...do you seen any output on the right in the editor window?

May have a look here, there are many possible causes:

h ttps://stackoverflow.com/questions/26210992/playground-is-not-showing-result-on-right-bar

I particularly noted :

In my case for Xcode 9.2, output started appearing when I clicked File/New/Tab. So, Playground seems missing some refresh option and new tab did that.

Nothing works. If I build in an error, playgrounds tells me correctly that there is a mistake, but when I've fixed it, nothing happens.

I will try out to get back to a backup a few days earlier, let's see ...

After some hours and many tries I solved the problem: First of all I've reinstalled a new OSX from scratch (no backup, no restoring). Very important: during the installation process do no connect to your icloud-/Apple-Account (this was reproduceable!) and don't use any timemachine backup. After this I've installed Xcode and ... voila ... everything works as it should. The next boring hours I've used to copy back my personal directory and to reinstall the apps (and again: don't use any restore timemachine-functionality, just do it manually). At the moment everything works fine again (and I've got rid of some never used apps) - but I've no clue what was the reason for this trouble...

I was having the same issue and then discovered a very simple step to fix it - we now have to include the line

import PlaygroundSupport

at the top of the playground. Everything worked perfectly after that.

A bug report would be interesting, as this is not documented in PlaygroundSupport functionalities.

This worked for me: make sure the playground is in "Show Raw Markup" under the Editor menu option.