Sharing information in multi-threading environment
4D v16 R6 introduces a new concept of communication between processes: shared object and shared collection variables! They are a solution so you can a...
January 18, 2018
1 min read
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.
New command to get Web Server information
This feature is another way of providing you the ability to create your own server administration dialog. Following the ability to retrieve informatio...
November 3, 2017
1 min read
Working with JSON Pointers
In 4D v16 R4, we enriched object commands so you can validate JSON objects. 4D v16 R5 is going even further by introducing the support of JSON pointer...
October 30, 2017
1 min read
Hash and verify passwords for web user login
Security is becoming an increasingly important topic as business applications become more frequently accessible through the web and are, as a result, ...
October 18, 2017
1 min read
Don’t be afraid of undefined values
With 4D v16 R4, we introduced Object Notation which is a great enhancement to the 4D language: your code is fast, flexible, efficient and elegant! Thi...
October 11, 2017
1 min read
Passing data back and forth between forms
Wouldn't it be great if you could just open a form and pass it some parameters to initialize your form objects? What about being able to also get the ...
October 6, 2017
1 min read
4D Summit 2016: Laurent Esnault presents workers and UI in preemptive mode
Our own VP of Engineering, Laurent Esnault, explains exchanging information between multiple processes AND between processes and forms during his Brea...
September 22, 2017
1 min read
Difference between cooperative and preemptive explained by Laurent Esnault at 4D Summit 2016
Laurent Esnault, VP of Engineering, explains the difference between cooperative and preemptive processes during his Break Out Session about Preemptive...
September 4, 2017
1 min read
A new tool: JSON Validator
4D v16 R4 introduces a new command: JSON Validate. This command allows you to verify that a JSON document is “valid” according to your JSON schema. Th...
August 23, 2017
1 min read
Retrieve the license information by programming
When you perform analysis, reporting or debugging of your server application you may want to know the number of available clients, the number of consu...
July 26, 2017
1 min read