ARMOR is designed to work seamlessly with your current authentication mechanism to protect your application from CSRF attacks. 

When you’re dealing with complex and structured data, you need to determine whether the data is valid or not. JSON-Schema is the standard of JSON documents that describes the structure and the requirements of your JSON data. In this two-part series, you’ll learn how to use JSON-Schema to validate data. 

                     column.AggregateFunction(aggregateFunction =>
                         {
                             // just adds an empty cell for events processing
                             aggregateFunction.NumericAggregateFunction(AggregateFunction.Empty);
                         });

.MainTableEvents(events =>
             {
                 events.DataSourceIsEmpty(message: "There is no data available to display.");

                 events.CellCreated(args =>
                 {
                     if (args.CellType == CellType.PreviousPageSummaryCell ||
                         args.CellType == CellType.PageSummaryCell ||
                         args.CellType == CellType.SummaryRowCell)
                     {
                         if (args.TableRowData != null &&
                             args.Cell.RowData.PropertyName == "C.F.2")
                         {
                             var summaryRowCredit = args.TableRowData.FirstOrDefault(x => x.PropertyName == "Credit");
                             var summaryRowDebit = args.TableRowData.FirstOrDefault(x => x.PropertyName == "Debit");
                             if (summaryRowCredit != null && summaryRowDebit != null)
                             {
                                 args.Cell.RowData.FormattedValue =
                                     (summaryRowCredit.PropertyValue.ToSafeDouble() - summaryRowDebit.PropertyValue.ToSafeDouble()) > 0 ? "Deb." : "Cred.";
                             }
                         }
                     }
                 });
             })

n general terms, caching takes place where the frequently-used data is stored, so that the application can quickly access the data rather than accessing the data from the source. Caching can improve the performance and scalability of the application dramatically and can help us to remove the unnecessary requests from the external data sources for the data that changes infrequently. 

SQL is far from dead: it’s one of the most in-demand skills that you find in job descriptions from the data science industry, whether you’re applying for a data analyst, a data engineer, a data scientist or any other roles. This is confirmed by 70% of the respondents of the 2016 O’Reilly Data Science Salary Survey, who indicate that they use SQL in their professional context.  

Lambda expressions (or lambda functions) are essentially blocks of code that can be assigned to variables, passed as an argument, or returned from a function call, in languages that support high-order (first-class) functions. 

In this webinar, we will show the benefits of using DevExpress Object-Relational Mapping Library - the eXpress Persistent Objects - with .NET Core 2. The presentation will quickly cover the basics for those new to DevExpress products, and will show how you can use our ORM to manage data in ASP.NET Core or Xamarin apps. 

Ring UI library gives you the power of complex UI controls that have been developed at JetBrains over the years. It contains over 50 React controls, ranging from simple links and buttons to sophisticated controls, such as Date Picker or Data List.