4D Language
The importance of probation
FeaturedOne of the golden rules of optimization is to regularly re-read your code to identify possible improvements, while taking into...
4D Coding #06 – Signal and Semaphore
This module introduces 4D’s synchronization mechanisms: signals and semaphores.These tools enable you to coordinate several processes working in parallel, avoid...
4D Coding #05 – Processes, workers and cousins
In the beginning, there were processes, which enabled us to carry out several actions in parallel and to multi-window. Then...
4D Coding #04 – Associative arrays
With associative arrays, you can use the power of a data dictionary in 4D. Associative arrays, also known as catalog...
4D Coding #03 – Objects and collections
In a very short space of time, objects have become an essential part of the 4D language and form the...
4D Coding #02 – Variables
In this training course, you’ll get a complete overview of the different types of variables available. In fact, beyond local,...
4D Coding #01 – Newcomers to the language
This course gives an overview of the main developments in the 4D language, both recent versions and improvements introduced over...
Understanding System Workers in 4D
FeaturedSystem Workers are a key element of multitasking in 4D.This course introduces you to the fundamentals of System Workers, their...
