New Built-in Websocket Server
In an increasingly connected world, websites or IoT applications must be updated in real-time. A way to deliver information instantly to your sites i...
April 27, 2023
1 min read
For Developers
Build better 4D applications with practical patterns and technical deep dives from our blog.
Meet the Improved Distinct Function
Retrieving the list of unique data elements is always helpful when manipulating data. In some cases, retrieving the number of occurrences of each valu...
April 26, 2023
1 min read
Object and Collection Literal Initializer
In your code, objects and collections can be instantiated using New object and New collection commands. However, starting from 4D v20, a more conveni...
April 26, 2023
1 min read
Create a Help Menu with a Simple Collection
The "Help" menu of a software is handy. Obviously, you have a menu item to open the online documentation of the software, but also how to contact the ...
April 25, 2023
1 min read
New Handy Functions for Collections!
The functions associated with collections were introduced with 4D v16 R6 and have evolved with the possibility to use formulas for some of them, like ...
April 25, 2023
1 min read
PDF format for Print Previewing on Windows
PDF format is a viable alternative to XPS for print previewing on Windows, providing users with a more accessible option. Microsoft's decision to make...
April 25, 2023
1 min read
ORDA – From Beginner to Expert
ORDA, which stands for Object Relational Data Access, is a method of accessing data that combines the advantages of object-oriented programming with t...
March 6, 2023
1 min read
Catch errors everywhere
Error management is often a constraining part of development in all languages. In 4D, if you forget to call an error-handling method in a new process/...
February 6, 2023
1 min read
Filter Access to your Data with a Complete System of Permissions
Filter access to data is a must-have feature to prevent malicious access to your application. So far, you could expose or not expose as a REST resour...
January 18, 2023
1 min read
Test your Windows SDI Application
It's been a long time since you could provide your customers with merged applications in SDI mode. We know that testing an SDI application can be cha...
January 16, 2023
1 min read