Change the properties of several methods at once by code
We know that sometimes you want to change the properties of multiple methods without having to open the property dialog for each method. For example,...
July 27, 2018
1 min read
Collections
How to display a multilevel collection in different list boxes!
Starting with 4D v17, the content of a multilevel collection can easily be displayed in different list boxes. Meaning that you can bind several list b...
May 28, 2018
1 min read
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
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
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
Find a specific attribute value in a single line of code!
Remember the days when you had to use nested loops and conditional statements to retrieve an object's attribute? So you ended up with a long and compl...
February 27, 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
Convert collections
4D v16 R6 provides advanced capabilities to manipulate collections, thanks to 40+ methods to be used with Object Notation. By using them, you'll be ab...
February 6, 2018
1 min read