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8,033 PointsIos compiler error on treehouse
i am getting this error on treehouse compiler and not on my computer
Executable requires at least macOS 10.12, but is being run on macOS 10.11.6, and so is exiting.xcrun: error: unable to locate xcodebuild, please make sure the path to the Xcode folder is set correctly! xcrun: error: You can set the path to the Xcode folder using /usr/bin/xcode-select -switch sh: line 1: xcrun:: command not found
enum ParserError: Error {
case emptyDictionary
case invalidKey
}
struct Parser {
var data: [String : String?]?
func parse() throws {
guard data != nil else {
throw ParserError.emptyDictionary
}
guard data?.keys.contains("someKey") == true else {
throw ParserError.invalidKey
}
}
}
let data: [String : String?]? = ["someKey": nil]
let parser = Parser(data: data)
do {
try parser.parse()
} catch ParserError.emptyDictionary {
print("The dictionary is empty.")
} catch ParserError.invalidKey {
print("The key 'someKey' does not exist.")
}