Delphi is a high-level, compiled, strongly typed language that supports structured and object-oriented design. Based on Object Pascal, its benefits include easy-to-read code, quick compilation, and the use of multiple unit files for modular programming. Delphi has special features that support the RAD Studio component framework and environment. For the most part, descriptions and examples in this language guide assume that you are using Embarcadero development tools.
Most developers using Embarcadero software development tools write and compile their code in the integrated development environment (IDE). Embarcadero development tools handle many details of setting up projects and source files, such as maintenance of dependency information among units. The product also places constraints on program organization that are not, strictly speaking, part of the Object Pascal language specification. For example, Embarcadero development tools enforce certain file- and program-naming conventions that you can avoid if you write your programs outside of the IDE and compile them from the command prompt.
This language guide generally assumes that you are working in the IDE and that you are building applications that use the Visual Component Library (VCL). Occasionally, however, Delphi-specific rules are distinguished from rules that apply to all Object Pascal programming.