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D

D

D is a systems programming language that emphasizes speed. D combines the performance and safety of compiled languages with the expressiveness of dynamic languages. Its syntax is inspired by C and C++.

Master D with
Interactive Learning

Elevate your D skills through 93 curated exercises across 0 core concepts. Master problem-solving with a structured learning path designed for modern developers.

D

About D

D is a systems programming language with C-like syntax and static typing. It combines efficiency, control and modeling power with safety and programmer productivity. The language was developed originally by Walter Bright and Andrei Alexandrescu since D version 2.

D is the culmination of decades of experience implementing compilers for many diverse languages and has a large number of unique features:

  • high level constructs for great modeling power
  • high performance, compiled language
  • static typing
  • evolution of C++ (without the mistakes)
  • direct interface to the operating system API's and hardware
  • blazingly fast compile-times
  • allow memory-safe programming (SafeD)
  • maintainable, easy to understand code.
  • short learning curve (C-like syntax, similar to Java and others)
  • compatible with C application binary interface
  • multi-paradigm (imperative, structured, object oriented, generic, functional programming purity, and even assembly)
  • built-in error prevention (contracts, unittests)

The D Language Foundation is the organization devoted to developing and advancing the D language.

Key Features of D

Expressive

Support for multiple programming paradigms, with strong metaprogramming capabilities.

Fast

D programs are compiled, leading to faster execution times than interpreted languages.

Safe

Functions tagged as @safe restrict them to a memory-safe subset of D.

Language Interop

Seamlessly embed C and C++ into your D projects, giving you access to millions of libraries.

Better C

Integrate D into C projects using the -betterC compilation flag.

Optional GC

Leave it enabled when it's needed, and disable it when it's not.

Track icon

Expressive

Support for multiple programming paradigms, with strong metaprogramming capabilities.

Fast

D programs are compiled, leading to faster execution times than interpreted languages.

Safe

Functions tagged as @safe restrict them to a memory-safe subset of D.

Language Interop

Seamlessly embed C and C++ into your D projects, giving you access to millions of libraries.

Better C

Integrate D into C projects using the -betterC compilation flag.

Optional GC

Leave it enabled when it's needed, and disable it when it's not.

Dive into D practice challenges

Hello World
Hello World
Level 1

SlaveCode's classic introductory exercise. Just say "Hello, World!".

Leap
Leap
Level 1

Determine whether a given year is a leap year.

Raindrops
Raindrops
Level 1

Convert a number into its corresponding raindrop sounds - Pling, Plang and Plong.

Two-Fer
Two-Fer
Level 1

Create a sentence of the form "One for X, one for me.".

Acronym
Acronym
Level 2

Convert a long phrase to its acronym.

Allergies
Allergies
Level 2

Given a person's allergy score, determine whether or not they're allergic to a given item, and their full list of allergies.