In a previous blog post, we introduced a very important concept in object-oriented programming: Classes. Now we’ll go through another core concept: Inheritance, the mechanism that allows a class to acquire the behavior of another class.
When it comes to ORDA, 4D v18 R3 is full of good news! New member methods are at your disposal to further enhance your coding experience.
For starters, extracting data from an entity selection has been greatly enriched allowing you to build a fully customized collection with your entity selection data.
In addition, we’re providing you a way to indicate to an entity selection that its data needs to be refreshed from the server immediately, invalidating cached data.
Interested in some details? Keep reading, everything you need to know is below.
Many of you have have been asking to be able to define an object type ever since the Object type became available. Thanks to object notation, many of you dream of having object functions. Dream no more and say hello to classes in 4D v18 R3 project database! In this blog post, we’re introducing one of the most interesting concepts of object-oriented programming … along with a database example and a bonus video!
To display a list of records, an entity selection list box is the most suitable when using ORDA technology. 4D v18 R2 simplifies your life with a new tool to easily build entity selection list boxes: List box builder. What is it? It’s a simple dialog where you can set up your list box in a few quick steps (select the table and fields to display, enter column titles, and define the column order).
Some developers use multiple IDEs and want to have the same shortcut for debugging actions. As of 4D v18 R2, it’s possible to customize the debug shortcuts from the 4D preferences.
By now, you’ve surely discovered the new ability to identify your users thanks to the SET USER ALIAS command. In 4D v18 R2, the command’s behavior has been extended. How? Keep reading!
4D Write Pro brings good news with 4D v18 R2: deleting inline or anchored pictures can now be done in a snap! Say hello to the new command, WP DELETE PICTURE.
4D v18 introduced an easy to use and powerful new way to create and send emails. A way that lets you send eye-catching emails based on HTML (with images, videos, and attachments), using just a few lines of code. In 4D v18 R2, we’ve added the ability to locally download your emails and remove them from your email server. In this blog post, we’ll go through the new possibilities this offers.
Want to adapt your application’s interface to your end user’s system preferences? Want to make sure your application’s interface isn’t obscured by the macOS dock or menu, or by the Windows taskbar? In this blog post, we’ll show you how!