swift3

问题 I am able to get a response without the :status : accept expression attribute value but with it, I get the following error when I am using the #status in the projectionExpression line (status is a reserved word in DynamoDB so I had to add hashtag there per https://stackoverflow.com/a/45952329/5921575): Error Domain=com.amazonaws.AWSCognitoIdentityErrorDomain Code=0 "(null)" UserInfo={__type=com.amazon.coral.validate#ValidationException, message=Value provided in ExpressionAttributeValues

问题 Recently, I wasn't able to run some of my apps in Xcode. They would build, then quit without showing up. So I tried going into the Debug folder and starting the app manually. I ended up getting an error report from macOS telling me that the exception type was "Code signature invalid". I also ran a test in Xcode and it told me that the code wasn't signed at all, and that it failed with exit code 1. I know that something must be wrong with my code signing in my Xcode projects, but I'm not sure

问题 When specifically dealing with non-optional String values, what could be the difference between String interpolation and String concatenation? struct MyModel { let value1: String let value2: String var displayNameByConcatenation: String { return value1 + "-" + value2 } var displayNameByInterpolation: String { return "\(value1)-\(value2)" } } Is there going to be any case where displayNameByConcatenation and displayNameByInterpolation are different? Like on long unicode strings? Is it possible

问题 I've been trying to use the AWSRekognition SDK in order to compare face. However, Amazon has no Documentation on how to integrate their SDK with iOS. They have links that show how to work with Recognition (Developer Guide) with examples only in Java and very limited. I wanted to know if anyone knows how to integrate AWS Rekognition in Swift 3. How to Initialize it and make a request with an image, receiving a response with the labels. I have AWS Signatures AccessKey, SecretKey, AWS Region,

问题 So the error I'm having is this : "found an unexpected mach-o header code" Everything I found online told me to check my target build phases and see what doesn't belong in the Copy Bundle Resources. What doesn't belong here because I feel everything is in the right spot. UPDATE : I removed everything in the list and I still encounter this error :( 回答1: If you are using Cocoapods, you should add this to the end of your Podfile: post_install do |installer| installer.pods_project.targets.each do

问题 So the error I'm having is this : "found an unexpected mach-o header code" Everything I found online told me to check my target build phases and see what doesn't belong in the Copy Bundle Resources. What doesn't belong here because I feel everything is in the right spot. UPDATE : I removed everything in the list and I still encounter this error :( 回答1: If you are using Cocoapods, you should add this to the end of your Podfile: post_install do |installer| installer.pods_project.targets.each do

问题 I don't understand how to get array from dictionary, i have tried in this code but i want get array only content and type This is my array { wsResponse = { aarti =( { content = ""; identifier = "slok_one"; title = 1; type = "\U092d\U0915\U094d\U0924\U093e\U092e\U0930"; }, { content = ""; identifier = "slok_two"; title = 2; type = "\U092d\U0915\U094d\U0924\U093e\U092e\U0930"; }, { content = ""; identifier = "slok_three"; title = 3; type = "\U092d\U0915\U094d\U0924\U093e\U092e\U0930"; } } ); };

问题 I don't understand how to get array from dictionary, i have tried in this code but i want get array only content and type This is my array { wsResponse = { aarti =( { content = ""; identifier = "slok_one"; title = 1; type = "\U092d\U0915\U094d\U0924\U093e\U092e\U0930"; }, { content = ""; identifier = "slok_two"; title = 2; type = "\U092d\U0915\U094d\U0924\U093e\U092e\U0930"; }, { content = ""; identifier = "slok_three"; title = 3; type = "\U092d\U0915\U094d\U0924\U093e\U092e\U0930"; } } ); };

问题 I have read all the questions on this issue this and this. I have the following code let fullURL = God.getFullURL(apiURL: self.apiUrl) if (getOrPost == God.POST) { Alamofire.request(fullURL, method: .POST, AnyObject: self.postData?, encoding:.JSONEncoding.default, headers: nil).responseJSON{ response in self.responseData = response.result.value } } else if (getOrPost == God.GET) { Alamofire.request(fullURL, method : .GET, Parameters: getData, encoding:.JSONEncoding.default, headers: nil)

问题 As title,After I check How to add Strings on X Axis in iOS-charts? this post. I still don't know where can I put "formato.stringForValue(Double(i), axis: taxis)" in for-in loop, as I know, when I implement this protocol ,this function will send out a "String".My question is how does it connect to my xAxis data?? Following is my code ,please refer to it. //setChartData func setChart(dataPoints:[String],values:[Double]){ self.barChartView.noDataText = "You need to provide data for the chart."