D Cheatsheet
Quick reference guide for D — Systems programming, numeric computing, game development
Table of Contents
Templates in D provides essential functionality for building robust applications. Understanding these concepts helps you write cleaner, more maintainable code and follow D best practices.
Key Concepts
- •Understanding templates is essential for effective D development. Master the fundamentals before moving to advanced patterns.
- •Best practices include writing clean, readable code with proper naming conventions and consistent formatting.
- •Refer to the official D documentation for the latest syntax and API changes.
Ranges in D provides essential functionality for building robust applications. Understanding these concepts helps you write cleaner, more maintainable code and follow D best practices.
Key Concepts
- •Understanding ranges is essential for effective D development. Master the fundamentals before moving to advanced patterns.
- •Best practices include writing clean, readable code with proper naming conventions and consistent formatting.
- •Refer to the official D documentation for the latest syntax and API changes.
UFCS in D provides essential functionality for building robust applications. Understanding these concepts helps you write cleaner, more maintainable code and follow D best practices.
Key Concepts
- •Understanding ufcs is essential for effective D development. Master the fundamentals before moving to advanced patterns.
- •Best practices include writing clean, readable code with proper naming conventions and consistent formatting.
- •Refer to the official D documentation for the latest syntax and API changes.
Related Cheatsheets
About D
D is a multi-paradigm programming language created by Walter Bright in 2001. It is primarily used for systems programming, numeric computing, game development. D uses static typing, which catches type errors at compile time, improving code reliability and IDE support.
Why Use This D Cheatsheet?
- ✓Quick Reference — Find syntax and patterns instantly without searching through documentation.
- ✓Organized by Topic — 10 sections covering all major D concepts, from basics to advanced.
- ✓Always Updated — Covers the latest D features and best practices for 2026.
- ✓Searchable — Use the search bar to jump to exactly the concept you need.
Getting Started with D
Whether you're new to D or an experienced developer looking for a quick reference, this cheatsheet covers the essential concepts you need. Start with the fundamentals like templates and ranges, then progress to more advanced topics like c interop and compile-time evaluation.
D has been widely adopted since its creation in 2001, with a strong community and ecosystem. Files typically use the .d extension. For the most comprehensive and up-to-date information, always refer to the official D documentation alongside this cheatsheet.
Methodology & Sources for D
How we compile D cheatsheet content: Each entry is sourced from official D documentation, language specifications (where applicable), and community-validated patterns from Stack Overflow Developer Survey data. Examples are tested against current language/framework versions and updated quarterly.
- Primary source: official D documentation and language specification.
- Examples: validated against current stable release (latest LTS where applicable).
- Use cases: derived from Stack Overflow Developer Survey patterns and GitHub trending repositories.
- Common pitfalls: cataloged from real-world bug reports, GitHub issues, and Stack Overflow Q&A.
Authoritative sources:
- Stack Overflow — community Q&A reference
- MDN Web Docs (Mozilla) — open web standards
- W3C Standards — web platform specifications
- GitHub Open Source — implementation patterns
- NIST Computer Security Division — security best practices
- OWASP Security Standards — secure coding guidelines
Disclaimer: Cheatsheet content reflects standard usage patterns. Always verify with official documentation for your specific version. Code examples may need adaptation for your environment, dependencies, or framework version.
Reviewed by Brazora Monk · Last updated 2026
Standards, Specs & Security References for D
For production code in D, always verify against canonical specifications and security guidance — not just tutorials. Common runtime / language-version compatibility issues are addressed by:
Always cite the spec, not paraphrases:
- • W3C Standards (HTML/CSS)
- • ECMA-262 (JavaScript spec)
- • IETF RFCs (HTTP, JSON, base64, etc)
- • MDN Web Docs — practical reference
Avoid common vulnerabilities:
- • OWASP Top 10 — web security
- • OWASP Cheat Sheet Series
- • NIST SP 800 Series — security publications
- • MITRE CWE — Common Weakness Enumeration
Verify dependencies + audit:
- • npm Registry + `npm audit`
- • GitHub Security Advisories
- • NIST NVD (CVE Database)
- • Snyk Vulnerability DB
Modern toolchain references:
- • GitHub — Open Source Maintenance
- • Docker Documentation
- • Kubernetes Docs
- • Always pin versions in production lockfiles
ReDoS warning: Regex patterns with nested quantifiers can cause catastrophic backtracking. Test patterns with regex101.com and check OWASP ReDoS guidance before deploying user-input regex.
Frequently Asked Questions
What is D used for?
D is primarily used for systems programming, numeric computing, game development. It was created by Walter Bright in 2001. It follows the multi-paradigm paradigm.
Is D hard to learn?
D has a moderate learning curve. Start with the basics covered in sections like Templates and Ranges, then gradually work through more advanced topics. This cheatsheet helps by providing quick references for each concept.
How do I use this cheatsheet?
Use the search bar to find specific topics, click section headers to expand/collapse content, and use the table of contents for quick navigation. You can also expand or collapse all sections at once.