[ad_1] Q1: How to check if a value exists in hashmap? You need to iterate through and check if such item exists. You can use `std::find_if() with a lambda or do that through a loop. If you do that quite often you may want to index values as well (see below) Q2: How to iterate … Read more
[ad_1] The answers that others have put forwards helped me to create a program that every time the .py file is called it counts the number of files in the sub-directory and adds it to a file name and creates the file The Code I Used: path, dirs, files = next(os.walk(“C:/xampp/htdocs/addfiles/text/”)) file_count = len(files) save_path=”C:/xampp/htdocs/addfiles/text/” … Read more
[ad_1] It looks like your if statements are checking for the variable grade, but your input is being assigned to letterGrade. You can fix this either by changing your first line to grade = input(“Please enter a letter grade: “) or change every instance of grade to letterGrade. Additionally, grade == “4.0” should probably be … Read more
[ad_1] That’s a lousy diagnostic message. Your particular XPath syntax problem Rather than ||, which is logical OR in some languages, you’re probably looking for |, which is nodeset union in XPath. (That is, assuming you’re not aiming for XPath 3.0’s string concatenation operator.) How to find and fix XPath syntax problems in general Use … Read more
[ad_1] Deque: This would be a decent choice, since you can add/remove from both the front/end of the line in O(1) time, and the number of patients can be kept track of with an integer variable, so getting the size of the line would be O(1). You can also ensure a max capacity of N … Read more
[ad_1] some fundamental coding errors needs to be addressed here along with logical flaw. before we proceed lets format to 4 spaces int main() { /* Lets simplify these two statements */ // char ce[] = {“ceil”}; // char fl[] = {“floor”}; char *ce = “ceil”; char *fl = “floor”; /* format this into one … Read more
[ad_1] Your problem is that you have nested objects and you want to access them via reflection. That is not working! If your Student would only have one exam, you would need to change the propertyNames to this: String[] propertyNames = { “name”, “groupNumber”, “exam.name”, “exam.mark” }; and the definition of the data provider to … Read more
[ad_1] Either LINQ: List<Guid> guids = guidStrings.Select(Guid.Parse).ToList(); or List.ConvertAll which is a little bit more efficient because it knows the size: List<Guid> guids = guidStrings.ConvertAll(Guid.Parse); 0 [ad_2] solved Convert a Collection of Strings into Collection of GUID
[ad_1] You declared the constructor of player as Player(string name, int points);. If you define a function with two parameters you have to use both. Create your object with Player player1 = Player(“Matti”, 0); If you still want to call it with just one parameter you have to set a default value like this. class … Read more
[ad_1] Your DrowRanger method is calling itself infinitely. This is almost always the cause of a StackOverflowException. This line: return DrowRanger(); Calls the DrowRanger method, but since you’re inside the DrowRanger method it just keeps calling itself infinitely. I think you meant to return the local object: return DrowRanger; In general, it is a bad … Read more
[ad_1] athing.something means “Get the property called something from athing“. If a property doesn’t exist, then it has the value undefined. Your newly created string doesn’t have an abdc property. You can’t compare it to Snippet 1 because you are dealing with a property, not a variable. You can compare it to Snippet 2, which … Read more
[ad_1] If you need sequential activity, you can call one task and then another. The simple solution in your case is something like this. ExecutorService exec = Executors.newFixedThreadPool(2); exec.execute(new Runnable() { public void run() { userProvisioner1.run(); userProvisioner2.run(); } }); exec.execute(new Runnable() { public void run() { userProvisioner3.run(); userProvisioner4.run(); } }); exec.shutdown(); exec.awaitTermination(); [ad_2] solved Running … Read more
[ad_1] Creating some data to work with: tim <- data.frame(2616, 2617, 2388) colnames(tim) <- c(“Jun”, “Jul”, “Aug”) This is our data tim: Jun Jul Aug 1 2616 2617 2388 You can use the melt function and then select only the column you wish to keep. The following code: library(dplyr) library(reshape2) melt(tim, value.name = “Month”) %>% … Read more
[ad_1] Here using Date alone causes the problem so Write it as: html += “<td class=”” + className + “”><a href=”#” data-toggle=”modal” data-target=”#tourRequModal” onclick=’dateSel(\”” + new Date().toString() + “\”,” + priceArr[i] + “)’>” + i + priceText + “</a></td>”; [ad_2] solved OnClick function – Uncaught SyntaxError: Invalid or unexpected token
[ad_1] The x += x doubles x every time the innermost statement is executed. The inner loop is executed 1 + 2 + 3 + 4 = 4 * (4 + 1) / 2 = 10 times. Thus, the result must be 2^10 = 1024. For general n, it should be something like 2^((n + … Read more