Where's Swift Compiler?

Question

I know that swift compiler was never exist in sololearn, but I found this code

https://code.sololearn.com/cw3Q4DKWs3tv/?ref=app

Written in swift with sololearn. How could this happen? Where's that swift compiler? Because i don't know that swift compiler is exist in sololearn😱

Oh, extra question:
If this is a bug, then why sololearn does not want to add online swift compiler???

Answer 1

It is not a bug. It can be easily done using Google Chrome's 'inspect element' (now just 'inspect') feature. Code Playground's compiler now supports Swift, perhaps. However, there's no public announcement on any Swift Code Playground yet.

Answer 2

Swift is now supported on SL.

Answer 3

https://www.sololearn.com/post/792046/?ref=app