When the value of IdCardType is HK:- CnName (string): Name in Chinese.- EnName (string): Name in English.- TelexCode (string): The code corresponding to the name in Chinese.- Sex (string): Gender. Valid values: M (male) and F (female).- Birthday (string): Date of birth.- ...
In this exercise, you work your way through these questions, the implications of their answers, and which technique you should use when you need to change the data type.Prepare your coding environmentThis module includes hands-on activities that guide you through the process of building and ...
What makes this result interesting is that, in TypeScript, undefined is a data type. Effectively, this means that while you can declare your variables as having a particular type, their type can be changed to undefined if the variable isn't set to a value. Therefore, to avoid problems, y...
Data types that are derived from fundamental data types are derived types. For example: arrays, pointers, function types, structures, etc. We will learn about these derived data types in later tutorials. bool type Enumerated type Complex types...
EF was happy, mappings were simpler and coding was more natural. So, with DDD, when I found myself with an Order aggregate root that was aware of CustomerId or maybe even a full Customer type, but I couldn’t navigate from Order back to Customer, I...
ResourceName String Instance name: The resource name set by the user in the console. If it is not set, it will be empty by default. ActionTypeName String Transaction type, which can be monthly subscription purchase, monthly subscription renewal, or pay-as-you-go deduction. OrderId String Ord...
Coding for Domain-Driven Design: Tips for Data-Focused Devs,Part 3 This month’s column will continue celebrating the 10th anniversary of Eric Evans’ book, “Domain-Driven Design: Tackling Complexity in the Heart of Software” (Addison-Wesley Professional, 2003). I’ll share more tips for d...
You can also add a header in JQuery when you build your request, but thanks to a couple of other options, you don’t have to go to that length. One of these options is to use datajs, the JavaScript library for OData, which provides many other benefits for coding against OData as wel...
Example: Explicitly by putting its name in a type statement: FUNCTION F ( X ) INTEGER F, X F = X + 1 RETURN END Example: Explicitly in itsFUNCTIONstatement: INTEGER FUNCTION F ( X ) INTEGER X F = X + 1 RETURN END Example: Implicitly by its name, as with variables: ...
This is not the set-based aggregation I had in mind. Luckily, SQL Server 2005 introduced user-defined aggregates that can be written in .NET code, and you can use one here to get an aggregate union of a set of values. Without going too far into the specifics of ...