[hot_gril]

This is probably fixed now, but around the days of Swift versions 1-3, Playgrounds were straight up broken. Very basic programs would segfault the compiler. I feel bad for any kids who may have been introduced to programming that way.

[saagarjha]

The new Swift Playgrounds is far better than what came before it. Those versions were pretty much unusable for sustained work.

[dwaite]

Very simple programs would segfault the compiler in 1-3 as well. You'd most often notice this as your syntax highlighting went away for a period of time.

[hot_gril]

Yeah, but it was even worse in Playgrounds somehow. They were unusable even for testing a one-line piece of code.