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This quick tip will show you have to get REPL (Read-Eval-Print-Loop) using iOS8 Swift and Terminal.

If you read the What's new in XCode 6 it introduces some new features about Xcode 6, and it says:

Command Line

Xcode’s debugger includes an interactive version of the Swift language, known as the REPL (Read-Eval-Print-Loop). Use Swift syntax to evaluate and interact with your running app or write new code in a script-like environment. The REPL is available from within LLDB in Xcode’s console, or from Terminal.

The first thing you need to do is:


sudo xcode-select -switch /Applications/Xcode6-Beta.app/Contents/Developer

Then you can use any of these two


xcrun swift 
lldb --repl

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