4D Language

Design application logic with strong typing, object oriented principles, structured error handling, and modular class architecture. Write clear, maintainable code that works consistently across desktop, web, REST, and client server environments.

HTTP classes: A New Way to Perform Asynchronous HTTP Requests

In our constant effort to improve 4D syntax and functionalities, we have decided to bring you new commands to perform HTTP requests in 4D: the HTTP cl...

Nicolas Brachfogel

July 19, 2022 1 min read

HTTP Programming

Support of larger integers than integer32

While Reals are known to be unprecise, they are 100% accurate even for very large numbers, as long as they do not use a decimal point (=integers). N...

Vanessa Talbot

July 18, 2022 1 min read

Language Programming

System Worker Vs. LAUNCH EXTERNAL PROCESS

System Workers might look like LAUNCH EXTERNAL PROCESS — but they're way more powerful. This 15-minute video explains how to use System Workers with ...

Thomas Maul

May 18, 2022 1 min read

System Worker

Form and subform communication made easy!

Starting with 4D v19 R5, the ability to associate a variable with a subform has enriched the possibilities of interfaces and communication between for...

Roland Lannuzel

April 28, 2022 1 min read

Form object Language Programming Subform

A Seamless Way to Manage Parameters

In the declaration of a function or method, you explicitly define its parameters. Then, when calling that function or method, you can pass fewer param...

Vanessa Talbot

April 25, 2022 1 min read

Class Language Programming

Access your component classes from your host project

Components can now publish classes! And even better, if your application is still in binary mode, you can now benefit from classes and object-oriented...

Fabrice Mainguené

April 25, 2022 1 min read

Class Code editor Component

More options for object set enterable command

There is a multitude of interfaces and rules to be respected. Often, these constraints are linked to the domains of activity. Obviously, some data can...

Vanessa Talbot

January 18, 2022 1 min read

Programming

New possibilities to customize the code editor

When it comes to customizing the code editor, everyone thinks of the font and colors of the code. But it is also possible to customize the code editor...

Vanessa Talbot

January 17, 2022 1 min read

Code editor UI

Saving project source code without tokens

Commands, constants, tables and fields are stored with their tokens in the project source code files (4dm files). This allows 4D to rename them automa...