Tips & Tricks for your 4D Apps – August 2023 Edition

by Add Komoncharoensiri, Director of Technical Services at 4D Inc

Here we go with another set of tips and tricks.

The 4D Knowledge Base is a library of information about 4D technology where weekly tech tips and monthly tech notes are actively published. If you missed the last tips on the KB, that’s fine; here is a compilation from the past few weeks.

This blog post covers 20 tips:

1. Utility Method to Check If Internet Connection is Active
2. Using ds.provideDataKey() with ds.encryptionStatus()
3. Resolving 401 Error – Naming PEM Files
4. New .flat() function in the Collection Class
5. TLS version differences between v19 and v20
6. Renaming Database Method Parameters
7. Using Transporter instead of SMTP for easier troubleshooting
8. Data encryption and automatic log file integration
9. Deleting 4D servers from the recently-used list
10. New .includes() function in the Collection Class
11. Plugin Command IDs
12. Copying over project methods from one project to another
13. CSS Specified Attribute Selector Behaviors
14. 4D for Mobile in 4D v20 
15. User IDs in binary vs project
16. Log integration mode differences
17. Copy of Database from Various Actions 
18. Chaining user class functions
19. Use @import tag to attach additional style sheets in 4D
20. Where to find previous versions or builds of 4D