Loops, loops and … more loops!
Like many other programming languages, 4D provides the ability to iterate over numbers with a For(…) / End for statement, or over a condition thanks t...
April 19, 2018
1 min read
For Developers
Build better 4D applications with practical patterns and technical deep dives from our blog.
ORDA: work with objects and collections
In this latest addition to the ORDA series, we'll look at how the new ORDA concepts can interact with existing objects and collections. In fact, it's ...
April 16, 2018
1 min read
Going back and forth between current selections to ORDA
ORDA is a major innovation of 4D v17, this is why we're dedicating an entire series of blog posts to ORDA. While ORDA has its own concepts that are ve...
April 13, 2018
1 min read
Display a collection in a listbox
Recently, 4D introduced of a new type of variable: collections, as well as a large set of methods to manipulate them. With 4D v17, the possibilities o...
April 12, 2018
1 min read
Query your database with an object-oriented approach
After learning how you can create, update, and delete data, here is a new entry in the ORDA series. In this post, you will see how you can query your ...
April 11, 2018
1 min read
4 different ways to find items in a collection
As a developer, you often need to know whether a specified item already exists in a collection, or to find all the items corresponding to particular c...
March 6, 2018
1 min read
Query collections
Simplicity is the ultimate sophistication, and with over 40 methods in 4D v16 R6 to manage collections, things are getting much easier for you as a de...
March 1, 2018
1 min read
Calculations in collections
Calculate average, total or price (including tax) are common tasks in any business application. Collections are an easy way to aggregate your data in ...
February 19, 2018
1 min read
Combine and sort collections
4D v16 R6 opens a wide range of possibilities to manage collections. Merging two collections into one, cloning or just ordering a collection is as eas...
February 12, 2018
1 min read
A wide range of possibilities to manage your collections
4D v16 R6 provides advanced capabilities to manipulate collections, thanks to a series of methods to be used with Object Notation. Over 40 methods are...
January 29, 2018
1 min read