Trying to understand why my C++ program is slowing down after running for long time

None of the threads close to the topic that I could find (like this one) helped me so far. I have a C++ program that reads some data from a file, runs pretty complex and intensive operations and then writes outputs to new files. When I let the process run for few hours, here are… Read More Trying to understand why my C++ program is slowing down after running for long time

set MySqlParameter = -1 if null

I am trying to use SQL queries, but I meet a problem with nullable objects : Here is my code where I define all MySql parameters : MySqlParameter[] listParams = new MySqlParameter[] { new MySqlParameter("id", this.ID), new MySqlParameter("idStock", this.idStock), new MySqlParameter("certificate", this.certificate), new MySqlParameter("idLO", this.launchingOrder.ID), new MySqlParameter("idToleOri", this.toleOri.ID), new MySqlParameter("idTolesOri", string.Join("+", this.idTolesOri)), new MySqlParameter("listInstructions", string.Join("|",… Read More set MySqlParameter = -1 if null

R: Calculate percentage of observations in a column that are below a certain value for panel data

I have panel data and I would like to get the percentage of observations in a column (Size) that are below 1 million. My data is the following: structure(list(Product = c("A", "A", "A", "A", "A", "A", "B", "B", "B", "B", "B", "B", "C", "C", "C", "C", "C", "C"), Date = c("02.05.2018", "04.05.2018", "05.05.2018", "06.05.2018", "07.05.2018",… Read More R: Calculate percentage of observations in a column that are below a certain value for panel data

Can someone explain how this state update is resolved?

Hi I’ve been learning ReactJs and I wrote these lines: handlerClick(i) { this.setState( (state) => (state.squares = […state.squares, (state.squares[i] = "X")]) ); } Now, I know whats happening but I’m confused with how this is working, the order that each operation is being executed… >Solution : Regarding the order of operations, everything to the right… Read More Can someone explain how this state update is resolved?

I have this error System.ServiceModel.Security.MessageSecurityException

For what I read and understood, this happens when I’m not sending the authentication. But I tried to send it in two ways: string userN = "username"; string _pasw = "password"; BasicHttpBinding binding = new BasicHttpBinding(); Endpoint wsdl = new Endpoint("MyEndpoint"); SoapClient client = new SoapClient(binding, wsdl); client.ClientCredentials.UserName.UserName = userN; client.ClientCredentials.UserName.Password = _pasw; await client.OpenAsync();… Read More I have this error System.ServiceModel.Security.MessageSecurityException

Spring boot rest requestbody and @valid not working when object is null/empty

I am trying to apply not null validation on an attribute of my request which is instructedAmount but it is not working. I have a Spring Boot (V2.3.0.RELEASE) application with the following endpoints: @Validated public class TestController { @PostMapping(value = "/test/pay") public ResponseEntity<IPSPaymentResponse> validatePayt(@Valid @RequestBody InstantPaymentRequest instantPaymentRequest) { log.debug("start validatePayment method {}", instantPaymentRequest); …. The… Read More Spring boot rest requestbody and @valid not working when object is null/empty