How can I use swift in Terminal?
sudo xcode-select -switch /Applications/Xcode.app/Contents/Developerthen you can do one of these:
xcrun swift lldb --replAs of Xcode 6.1 - typing swift in the terminal launches the REPL as well.
Alternatively, if you don't want to mess up your current dev environment, you can just run:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift
Step 1: Open Terminal
Step 2: Type "swift"
Step 3: There's no step 3
Example:
GoldCoast:~ macmark$ swiftWelcome to Swift! Type :help for assistance. 1> println("Hello, world")Hello, world 2> var myVariable = 42myVariable: Int = 42 3> myVariable = 50 4> let myConstant = 42myConstant: Int = 42 5> println(myVariable)50 6> let label = "The width is "label: String = "The width is " 7> let width = 94width: Int = 94 8> let widthLabel = label + String(width)widthLabel: String = "The width is 94" 9> :exitGoldCoast:~ macmark$