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
Objects and Collections
Sync Several Collections with this new Function
4D offers powerful features to work with object collections. For example, you can create a collection of cities with their associated countries and co...
October 18, 2023
1 min read
Comparison with an Undefined Value
Since the appearance of ORDA, classes, and other objects, you must work increasingly with undefined values. Since some of you are asking for an easie...
April 27, 2023
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New Handy Functions for Collections!
The functions associated with collections were introduced with 4D v16 R6 and have evolved with the possibility to use formulas for some of them, like ...
April 25, 2023
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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
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
Formula – Think outside the box
According to the top 10 blog posts of 2019, the Formula: More power behind simplicity post ranked quite high ... in the top five. It seems that Formul...
January 9, 2020
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
Write your own methods for objects
A new command is at your disposal allowing you to use formulas in your code. You can now encapsulate them in objects and call them when needed. There'...
October 17, 2018
1 min read
Times inside objects… (and everywhere else)
Objects are at it again, continuing to demonstrate their utility to ease your life as a developer. Using time (or duration) values inside of object...
June 1, 2018
1 min read