:0: error: filename "Contact+CoreDataProperties.swift" used twice: '/Users//Desktop/ProjectCoreData/Contact+CoreDataProperties.swift' and '/Users//Library/Developer/Xcode/DerivedData/ProjectCoreData-ehjvvgovpitmbcegzopwciptfafr/Build/Intermediates.noindex/ProjectCoreData.build/Debug-iphonesimulator/ProjectCoreData.build/DerivedSources/CoreDataGenerated/ProjectCoreData/Contact+CoreDataProperties.swift'Ĭommand /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault. :0: note: filenames are used to distinguish private declarations with the same name ZOC features tabbed sessions and extensive functions like a typed command history, scrollback, multiple window support and others. After you have launched Terminal, type the command to launch the JupyterLab server. Type Terminal and then double-click the search result or hit Enter. Target 'ProjectCoreData' (project 'ProjectCoreData') has compile command for Swift source filesįrom the logs: :0: error: filename "Contact+CoreDataClass.swift" used twice: '/Users//Desktop/ProjectCoreData/Contact+CoreDataClass.swift' and '/Users//Library/Developer/Xcode/DerivedData/ProjectCoreData-ehjvvgovpitmbcegzopwciptfafr/Build/Intermediates.noindex/ProjectCoreData.build/Debug-iphonesimulator/ProjectCoreData.build/DerivedSources/CoreDataGenerated/ProjectCoreData/Contact+CoreDataClass.swift' Press Command + spacebar to launch Spotlight. It's apparently random.Īny advice on how to fix this issue so I can develop? Multiple commands produce '//Library/Developer/Xcode/DerivedData/ProjectCoreData-ehjvvgovpitmbcegzopwciptfafr/Build/Intermediates.noindex/ProjectCoreData.build/Debug-iphonesimulator/ProjectCoreData.build/Objects-normal/x86_64/Contact+CoreDataClass.o': It seems to trigger when I add a relationship to another object. I see this problem go away if I remove the last model added in Core Data. I’m not sure how that got there, but thank you for identifying the source of the problem. It appears the source code that is stored on my desktop is conflicting with code that is in 'DerivedData', I'm not sure why this would suddenly pop up so randomly. Source: ist - Xcode 10 Error: Multiple commands produce - Stack Overflow Image of answer from source: Best, Gina. The solution from last year seemed to be switching to legacy mode, but that doesn't work now. Searching shows similar issue in Xcode 10 greater than a year ago, but no issues since then. In this article, I am going to show you the simplest solution to solve it. I am running xCode Version 10.1 (10B61), Mojave 10.14 (18A391) Multiple commands produce is a common Error in Xcode when we build our App.
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