# Delphi

> programming language (dialect of Object Pascal, used in Embarcadero Delphi)

**Wikidata**: [Q4037189](https://www.wikidata.org/wiki/Q4037189)  
**Source**: https://4ort.xyz/entity/delphi

## Summary
Delphi is a high-level, object-oriented programming language and integrated development environment (IDE) based on Object Pascal. It was developed by Anders Hejlsberg and first released in 1995 by Embarcadero Technologies. Delphi is primarily used for building Windows applications but has expanded to support macOS, iOS, Android, and Linux platforms.

## Key Facts
- Delphi was created by Anders Hejlsberg, the same Danish software engineer who created Turbo Pascal and later C# at Microsoft.
- The language is a dialect of Object Pascal, an object-oriented extension of the Pascal programming language that originated in 1986.
- Delphi 10.3.1 Rio was released on February 17, 2019, representing the latest major version at the time of this data.
- The IDE supports component-based software engineering, allowing developers to create reusable software components.
- Delphi applications can be developed for multiple operating systems including Windows, macOS, iOS, Android, and Linux.
- The language uses strong typing discipline and supports object-oriented programming paradigms.
- Common file extensions for Delphi include .pas (source code), .dpr (project files), .dpk (package files), and .pp (alternative Pascal source).
- Delphi has a dedicated Stack Overflow tag and is documented in multiple Wikipedia language editions.

## FAQs
### Q: What is Delphi used for?
A: Delphi is primarily used for developing desktop applications, particularly for Windows, but also supports cross-platform mobile and desktop development. It's commonly used for business applications, database tools, and commercial software where rapid development and component reuse are important.

### Q: Is Delphi still relevant in modern software development?
A: Yes, Delphi remains relevant for Windows desktop application development and has expanded to support modern platforms including mobile and Linux. Many enterprises continue to use and maintain Delphi applications, and the language receives regular updates with new features and platform support.

### Q: How does Delphi differ from other programming languages?
A: Delphi is unique in its combination of Object Pascal syntax with visual rapid application development tools and component-based architecture. Unlike many modern languages, it provides a complete visual IDE with drag-and-drop interface design, making it particularly efficient for building Windows desktop applications.

## Why It Matters
Delphi represents a significant milestone in software development by combining the power of object-oriented programming with visual rapid application development tools. It democratized Windows application development by making it accessible to developers without deep expertise in low-level Windows API programming. The component-based architecture pioneered by Delphi influenced many subsequent development environments and established patterns for software reuse that are still relevant today. For businesses, Delphi offered a productive environment for creating commercial Windows applications with shorter development cycles and maintainable codebases. Its evolution to support multiple platforms demonstrates the language's adaptability to changing technology landscapes while maintaining its core strengths in rapid desktop application development.

## Notable For
- Created by Anders Hejlsberg, who later created C# at Microsoft, making him one of the most influential language designers in modern computing
- Pioneered component-based software engineering in visual development environments, influencing Visual Basic and other RAD tools
- Successfully transitioned from Windows-only development to cross-platform support including mobile and Linux platforms
- Maintained backward compatibility across decades of versions, allowing legacy applications to be updated without complete rewrites
- Provides a complete visual IDE with drag-and-drop interface design, distinguishing it from text-based development environments

## Body
### Development History
Delphi was developed by Borland (later acquired by Embarcadero Technologies) as a successor to Turbo Pascal. The first version was released in 1995, building on the Object Pascal extensions that had been developed since 1986. Anders Hejlsberg, who had previously created Turbo Pascal, led the development team.

### Technical Architecture
Delphi is based on Object Pascal, an object-oriented extension of the original Pascal language. The language supports strong typing discipline and object-oriented programming paradigms. It uses a visual component library (VCL) for Windows development and FireMonkey for cross-platform UI development.

### Platform Support
Originally designed for Windows development, Delphi has expanded its platform support over the years. Current versions support Windows, macOS, iOS, Android, and Linux operating systems. This cross-platform capability allows developers to target multiple operating systems from a single codebase.

### Component-Based Development
A key feature of Delphi is its component-based architecture. Developers can create reusable components that encapsulate functionality and can be visually assembled in the IDE. This approach significantly speeds up development time and promotes code reuse across projects.

### File Structure
Delphi applications use several file extensions: .pas for source code files, .dpr for project files that define the main program structure, .dpk for package files that contain reusable components, and .pp as an alternative Pascal source file extension.

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