How can I use swift in Terminal?

Question

I read What\'s new in Xcode 6. The article introduces some new feature about Xcode 6, and it says:

Command Line

Xcode’s debugger includes an inter

Answer 1

sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

then you can do one of these:

xcrun swift 
lldb --repl

As of Xcode 6.1 - typing swift in the terminal launches the REPL as well.