Learn D - 10 Code Examples & CST Typing Practice Test
D is a high-level, statically typed, compiled systems programming language combining C-like performance with modern features like garbage collection, functional programming, and meta-programming.
Learn D with Real Code Examples
Updated Nov 20, 2025
Learning Path
Learn basic syntax and control flow
Understand structs, classes, and interfaces
Explore templates and ranges
Practice compile-time reflection and mixins
Build real-world applications with Dub
Skill Improvement Plan
Week 1: Syntax, variables, functions
Week 2: Classes, structs, inheritance
Week 3: Templates, ranges, mixins
Week 4: Performance tuning and concurrency
Interview Questions
What are D templates?
How does D support compile-time code execution?
Explain garbage collection in D
Difference between struct and class?
What are ranges and how are they used?
Cheat Sheet
import std.stdio;
int x = 10;
void main() { writeln("Hello World"); }
struct S { int a; }
template mixinExample() { ... }
Books
The D Programming Language by Andrei Alexandrescu
Learning D
Programming in D
Mastering D
Practical D Applications
Tutorials
Getting started with D
D templates and mixins
Concurrency and ranges in D
Building web applications with Vibe.d
Advanced D programming patterns
Official Docs
D Language Official Documentation
D Language Reference
Dub Package Manager Documentation
Community Links
D forum
StackOverflow D tag
Reddit r/d_language
GitHub D repositories
Discord D community
Community Support
D language forum
StackOverflow D tag
Reddit r/d_language
GitHub D repositories
Discord D community
Frequently Asked Questions about D
What is D?
D is a high-level, statically typed, compiled systems programming language combining C-like performance with modern features like garbage collection, functional programming, and meta-programming.
What are the primary use cases for D?
Systems programming and OS-level development. High-performance computing. Game engines and graphics programming. Financial and trading applications. Compile-time code generation and metaprogramming
What are the strengths of D?
High-performance native code. Clean modern syntax with C-style familiarity. Powerful compile-time metaprogramming. Versatile multi-paradigm language. Rich standard library with ranges and algorithms
What are the limitations of D?
Smaller community and ecosystem than C++ or Rust. Less industrial adoption for large-scale projects. Limited GUI library support. Garbage collector can be unpredictable in real-time systems. Interfacing with C++ can be complex
How can I practice D typing speed?
CodeSpeedTest offers 10+ real D code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.