swift-Xcode7.x(7.1,7.2,7.3)新建playground运行不能运行
Unable to find execution service for selected run destinatio
解决方法 1.关闭Xcode 2.在终端执行两行代码
rm -rf ~/Library/Developer/CoreSimulator/Deviceskillall -9 com.apple.CoreSimulator.CoreSimulatorService
see:
swift-Xcode7.x(7.1,7.2,7.3)新建playground运行不能运行
原文：http://www.cnblogs.com/xilifeng/p/5340166.html