foreach

问题 I need to know how to find duplicate values in integer array by loop method in swift? I tried to -> func findDuplicates (array: [Int]) { var prevItem = array[0] for i in 0...array.count-1 { if prevItem == array[i] { print(i) } else { print("there is no any duplicates values") } } } please show my solution in this way! 回答1: You can use a set and every time you try to insert an element it fails it means it is a duplicate. You would need also to make sure you don't keep duplicate elements on the

问题 I have a select where I have 3 results: $stmt = $handler->prepare("SELECT id,comments,likes,views FROM sites WHERE usr_id = '$usr_id'"); $stmt->execute(); After this select I have 3 results. Now I want in another table update or insert a new row for each result This is my complete code I don't have any update or new insert in table. Can anybody please help me? $stmt = $handler->prepare("SELECT id,comments,likes,views FROM sites WHERE usr_id = '$usr_id'"); $stmt->execute(); while($row = $stmt-

问题 what I am trying to accomplish is have a loop of items where I am able to tap one and it gets bigger programmatically once tapped here is my code and my results so far: struct ContentView: View { @State var emojisArray = ["📚", "🎹", "🎯", "💻"] @State var selectedIndex = 0 var body: some View { VStack { ScrollView(.horizontal) { HStack { ForEach(0..<emojisArray.count) { item in emojiView(emoji: self.emojisArray[item], isSelected: item == self.selectedIndex ? true : false) .onTapGesture { print

问题 I am running a gbm model using the caret package and trying to get it working using parallel processing with the doredis package. I can get the backend workers all up and running, but am having issues when they recombine into the final model. I am getting this error: Error in foreach(j = 1:12, .combine = sum, .multicombine = TRUE) %dopar% : target of assignment expands to non-language object This is my first time trying to run the foreach loop (let alone on a complex problem like gbm) and am

问题 I am running a gbm model using the caret package and trying to get it working using parallel processing with the doredis package. I can get the backend workers all up and running, but am having issues when they recombine into the final model. I am getting this error: Error in foreach(j = 1:12, .combine = sum, .multicombine = TRUE) %dopar% : target of assignment expands to non-language object This is my first time trying to run the foreach loop (let alone on a complex problem like gbm) and am

问题 I am running a gbm model using the caret package and trying to get it working using parallel processing with the doredis package. I can get the backend workers all up and running, but am having issues when they recombine into the final model. I am getting this error: Error in foreach(j = 1:12, .combine = sum, .multicombine = TRUE) %dopar% : target of assignment expands to non-language object This is my first time trying to run the foreach loop (let alone on a complex problem like gbm) and am

问题 I am running a gbm model using the caret package and trying to get it working using parallel processing with the doredis package. I can get the backend workers all up and running, but am having issues when they recombine into the final model. I am getting this error: Error in foreach(j = 1:12, .combine = sum, .multicombine = TRUE) %dopar% : target of assignment expands to non-language object This is my first time trying to run the foreach loop (let alone on a complex problem like gbm) and am

问题 I am running a gbm model using the caret package and trying to get it working using parallel processing with the doredis package. I can get the backend workers all up and running, but am having issues when they recombine into the final model. I am getting this error: Error in foreach(j = 1:12, .combine = sum, .multicombine = TRUE) %dopar% : target of assignment expands to non-language object This is my first time trying to run the foreach loop (let alone on a complex problem like gbm) and am

问题 I am running a gbm model using the caret package and trying to get it working using parallel processing with the doredis package. I can get the backend workers all up and running, but am having issues when they recombine into the final model. I am getting this error: Error in foreach(j = 1:12, .combine = sum, .multicombine = TRUE) %dopar% : target of assignment expands to non-language object This is my first time trying to run the foreach loop (let alone on a complex problem like gbm) and am

问题 I am running a gbm model using the caret package and trying to get it working using parallel processing with the doredis package. I can get the backend workers all up and running, but am having issues when they recombine into the final model. I am getting this error: Error in foreach(j = 1:12, .combine = sum, .multicombine = TRUE) %dopar% : target of assignment expands to non-language object This is my first time trying to run the foreach loop (let alone on a complex problem like gbm) and am