Debug breakpoint in Swift Playground?
Solution 1:
There's no debugger so you can't add any breakpoints.
Solution 2:
Matt, I could not enter code in the comments so here is a better view of using a variable on a line by itself to "debug" it.
for index in 1...5 {
dosomething(foo);
foo;
}
Then you can click the eyeball on the right hand side to see a history of foo as it was modified in the loop.