Delphi
Return Multiple Values From A Delphi Function
A Delphi function is a routine returning a value. A single value? Yes, No. No, a Delphi function can return multiple values and there are different ways how to achieve this goal. Either rely on VAR (by-reference) parameters or return a record, or something even more complex...Delphi Record Helpers For Sets (And Other Simple Types)
The Understanding Delphi Class (and Record) Helpers article introduces a feature of the Delphi language allowing you to extend the definition of a class or a record type by adding functions and procedures (methods) to existing classes and records without inheritance. In XE3 Delphi version, record helpers became more powerful by allowing to extend simple Delphi types like strings, integers, enums, sets and alike. Here's a sample helper for a set of bytes.
Owner Drawing The String Grid
For StringGrids with simple content the default drawing action is sufficient, but when various aligns or different colors need to be included in the stringgrid, drawing code must be written in the OnDrawCell event to support owner draw. Owner draw does not need to be specifically set (as one has to with a TListBox), one just places drawing code in the event handler and it is called by the class code after drawing the grid.Understanding Delphi Class (and Record) Helpers
A feature of the Delphi language added some years ago (way back in in Delphi 2005) called "Class Helpers" is designed to let you add new functionality to an existing class (or a record) by introducing new methods to the class (record). Here are some more ideas for class helpers + learn when to and when not to use class helpers.
Build Configurations - Base: Debug, Release
The Project Manager window in your Delphi (RAD Studio) IDE displays and organizes the contents of your current project group and any project it contains. The Build Configurations section will list various build configurations you have for your project. Since you can activate each of the build configurations you see in the Project Manager, then build your project producing a different executable file, the question is what is the difference between Debug and Release in Delphi?
Build Configuration: Release + TRIAL
The option to have different build configurations for your Delphi program allows you to have two (or more) different applications (executable files) being produced by the compiler/linker. For this purpose you would use a feature called conditional compilation. Here's how to create an extension to the Release build configuration: the Trial build.
Have Two Applications In One Delphi Program (Conditional Compilation) - Part 1
Creating a new Delphi (VCL, FMX) application would result in creating a single application (program) where all the units and forms used in the program would be compiled/linked into a singe executable file. If you would like to have the same code base in one program but also have an option to build two (or more) different applications - you should be looking at Delphi's conditional compilation.