Xcode: how to exit lldb swift repl
With a single colon you can leave the Swift REPL and return to lldb:
(lldb) repl1> 2> 3> :(lldb)
(Found here: http://swift.exomachina.com/how-to-use-lldb-to-debug-swift-program.)
With :quit you can stop the entire debugging session:
(lldb) repl3> 4> 5> :quit5> Program ended with exit code: 9