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
For Developers
Build better 4D applications with practical patterns and technical deep dives from our blog.
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
Finely control your tips in 4D
4D v16 R4 is providing you with more flexibility regarding tips management. Beyond the possibility to enable or disable all tips at once using databas...
July 27, 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
Create your own process and user monitoring
You need to get the list of processes running on your 4D server, 4D remote or 4D standalone to create your own Administration Window? You want to know...
July 25, 2017
1 min read
Define the tab order by programming
Here are 2 very common developer needs: 1. Depending on the user criteria, you want to rearrange the objects in the form. – 2. Depending on the select...
July 24, 2017
1 min read