Tips & Tricks for your 4D Apps – September 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. “1173: Cache flushing did not complete” error after Windows update
2. How to check if an object property contains a blob
3. Debug Logging a Specific Process
4. Directory location for table field blobs and pictures stored outside data file
5. Utility method for converting text to picture
6.  Exporting table object fields as .4IE
7. An orderByFormula Formula to Sort an Entity Selection’s Field Against a Collection
8. Workaround: 4D View Pro limits document export to 1000 rows
9. Dynamically call user class functions
10. How to get all visible and non-visible table titles and numbers
11. New .flatMap() function in the Collection Class 
12. Breakpoints do not transfer when copying a project database from one machine to another 
13. 4D Formulas and Variable Scopes 
14. Styling List Box based on its Type 
15. UserSet “does not exist” error 
16. Time command can quickly convert UTC time to local time 
17. 4D.HTTPRequest response contains 2 types of headers 
18. Client does not connect to development server due to components 
19. Web Log Backup Naming Convention 
20. Where to properly place components and plugins?