Stricter class-based typing for objects
With 4D 20 R10, object typing takes a major step forward, giving you more confidence and control in your code. Instead of simply checking if a value i...
July 16, 2025
1 min read
Objects
Easy Reference Comparison of Objects & Collections
Objects have become an essential part of the 4D language and of Qodly. But when you declare a variable of this type, you define a reference. So, how ...
July 18, 2024
1 min read
Meet the Updated Print form & FORM LOAD Commands
4D v16 R5 brought a significant improvement to the DIALOG command. An improvement that lays in the possibility of passing a new parameter "formData" o...
April 28, 2023
1 min read
Create a BLOB attribute in an object
With the introduction of classes in the 4D environment, the need to store your data in objects, and especially blobs, has increased. That's why 4D v19...
July 20, 2021
1 min read
ORDA: Easy looping with a new 4D tag
You have probably already used a For each...End for each loop to work with ORDA entity selections or with collections. Its use is simple and straight ...
April 22, 2021
1 min read
Objects Corner: easy sharing & other good news
How many times have you gotten the "Not supported value type in a shared object" error when trying to put an object into a shared object? What did yo...
May 19, 2020
1 min read
Zip/unzip files and folders with these commands
Before exchanging files (by email for example), we often compress them to reduce their size before transmitting them. With 4D v18, you can compress an...
November 21, 2019
1 min read
Power of objects and dot notation
With 4D v17 R5, we showed you how easy it is to manipulate an object to retrieve the attributes of a file or folder. Things have gotten even easier th...
September 3, 2019
1 min read
Object notation to handle files and folders
4D already provides commands to handle files and folders, but what about new commands that take advantage of the power of object notation? Objects ha...
May 2, 2019
1 min read
Read 4D object fields with SQL Engine
A 4D object field is a persistent database field type, stored as binary content. Previously, reading this type of field by an ODBC driver wasn't possi...
April 19, 2019
1 min read