Are you replying to the right person? I'm saying that "pattern" need not be restricted to the narrow sense used in the famous "Gang of Four" book[0], not that patterns are inherently bad!

[0] https://www.oreilly.com/library/view/design-patterns-element...

This codebase won an Oscar:

https://pbrt.org/

https://github.com/mmp/pbrt-v3

That said, IMHO, there is no "clean" C++ code. There are C++ codebases that use different styles, and their "quality" more or less is context sensitive.

Personally I felt the best tutorial to C++ were actually two other programming languages - Scheme and F#.

Scheme drove in the concept that it's totally fine to model things based on the shape of the data and that you don't need to create type based abstractions around every thing.

F# then demonstrated how a language with type system is supposed to work.

The problem with C++ is that the language is so verbose that unless you have an abbreviated model in your head how a type based language can be used to solve problems in best way, you will get lost in trivial C++ minutiae.

So, personally, I generally think "Am I solving a Scheme like problem or Standard ML like problem" and then try to apply C++ as simply as possible.

Several academics have created a career of how to patch C++/Java/C# with concepts that make them less fragile in a collaborative context:

https://en.wikipedia.org/wiki/Design_Patterns

https://www.amazon.com/Design-Patterns-Elements-Reusable-Obj...

In my opinion design patterns are not a fundamental concept, but rather provide common syntax for collaboration purposes for various patterns that are parts of language and more or less invisible in e.g. Scheme or F#. But if one is diving into C++ it's probably convenient to be familiar with these concepts.

I'm ready this book right now, and it's great. https://www.amazon.com/Design-Patterns-Elements-Reusable-Obj...

There's always the classics:

https://www.amazon.com/Design-Patterns-Elements-Reusable-Obj...

https://www.amazon.com/Refactoring-Improving-Design-Existing...

EDIT: And it appears the website is a direct rip-off of these books.

Design Patterns: Elements of Reusable Object-Oriented Software http://www.amazon.com/Design-Patterns-Elements-Reusable-Obje...

Practical Object-Oriented Design in Ruby by Sandi Metz. http://www.poodr.com/

A remarkable classic http://www.amazon.com/Design-Patterns-Elements-Reusable-Obje...

And Kent Beck's http://www.amazon.com/Smalltalk-Best-Practice-Patterns-Kent/...

Dive into design patterns. Get yourself a good book listing them. The bible of all developers is the Gang Of Four (http://www.amazon.com/Design-Patterns-Elements-Reusable-Obje...), but there are plenty good ones out there that aren't as dry and academic.

Design patterns are the greatest tool there is for learning software design. If you know them, you can apply them, but much more importantly they show you how you can apply the basic principles of OO development to various problems. By learning them, you're learning the thought process of how they came to be, and you'll be able to apply those thought processes to your own problems. Consider it like learning algebra by doing exercises. You can read theory all you like, but unless you apply it it just won't click.

Just in case, here's the 'Gang of Four' book on design patterns: http://www.amazon.com/Design-Patterns-Elements-Reusable-Obje...

We've known this since at least 1994, when the GoF book [1] famously said:

"Favor object composition over class inheritance"

[1] http://www.amazon.com/Design-Patterns-Elements-Reusable-Obje...

Yes. I believe such a book exists (or should at least) for every language as well.

Effective Java — http://www.amazon.com/Effective-Java-Edition-Joshua-Bloch/dp...

POODR (Ruby) — http://www.poodr.com/

Javascript the good parts — http://www.amazon.com/JavaScript-Good-Parts-Douglas-Crockfor...

There is of course also the gang of 4 language agnostic classic on design patterns http://www.amazon.com/Design-Patterns-Elements-Reusable-Obje...

- Design Patterns: Elements of Reusable Object-Oriented Software http://www.amazon.com/Design-Patterns-Elements-Reusable-Obje...

- Effective C++: http://www.amazon.com/Effective-Specific-Improve-Programs-De...

OK, if you don't have any real experience in low-level embedded coding (relevant to device drivers), RTOS or OS design in general, file systems, data structures, algorithms, interfaces, etc. And, if you have "hobby level" experience with Assembler, C and C++. And, if your intent is to write a desktop OS, from the ground up, without making use of existing technologies, drivers, file systems, memory management, POSIX, etc. Here's a list of books that could be considered required reading before you can really start to write specifications and code. Pick twenty of these and that might be a good start.

In no particular order:

1- http://www.amazon.com/C-Programming-Language-2nd-Edition/dp/...

2- http://www.amazon.com/The-Answer-Book-Solutions-Programming/...

3- http://www.amazon.com/The-Standard-Library-P-J-Plauger/dp/01...

4- http://www.amazon.com/C-Traps-Pitfalls-Andrew-Koenig/dp/0201...

5- http://www.amazon.com/Expert-Programming-Peter-van-Linden/dp...

6- http://www.amazon.com/Data-Structures-In-Noel-Kalicharan/dp/...

7- http://www.amazon.com/Data-Structures-Using-Aaron-Tenenbaum/...

8- http://www.amazon.com/Mastering-Algorithms-C-Kyle-Loudon/dp/...

9- http://www.amazon.com/Code-Complete-Practical-Handbook-Const...

10- http://www.amazon.com/Design-Patterns-Elements-Reusable-Obje...

11- http://www.amazon.com/The-Mythical-Man-Month-Engineering-Ann...

12- http://www.amazon.com/The-Programming-Language-4th-Edition/d...

13- http://www.amazon.com/The-Standard-Library-Tutorial-Referenc...

14- http://www.amazon.com/API-Design-C-Martin-Reddy/dp/012385003...

15- http://www.amazon.com/The-Linux-Programming-Interface-Handbo...

16- http://www.amazon.com/Computer-Systems-Programmers-Perspecti...

17- http://www.amazon.com/System-Programming-Unix-Adam-Hoover/dp...

18- http://www.amazon.com/Memory-Programming-Concept-Frantisek-F...

19- http://www.amazon.com/Memory-Management-Implementations-Prog...

20- http://www.amazon.com/UNIX-Filesystems-Evolution-Design-Impl...

21- http://www.amazon.com/PCI-System-Architecture-4th-Edition/dp...

22- http://www.amazon.com/Universal-Serial-System-Architecture-E...

23- http://www.amazon.com/Introduction-PCI-Express-Hardware-Deve...

24- http://www.amazon.com/Serial-Storage-Architecture-Applicatio...

25- http://www.amazon.com/SATA-Storage-Technology-Serial-ATA/dp/...

26- http://www.amazon.com/Beyond-BIOS-Developing-Extensible-Inte...

27- http://www.amazon.com/Professional-Assembly-Language-Program...

28- http://www.amazon.com/Linux-Kernel-Development-3rd-Edition/d...

29- http://www.amazon.com/Version-Control-Git-collaborative-deve...

30- http://www.amazon.com/Embedded-Software-Primer-David-Simon/d...

31- http://www.amazon.com/Programming-Embedded-Systems-C/dp/1565...

32- http://www.amazon.com/Making-Embedded-Systems-Patterns-Softw...

33- http://www.amazon.com/Operating-System-Concepts-Abraham-Silb...

34- http://www.amazon.com/Performance-Preemptive-Multitasking-Mi...

35- http://www.amazon.com/Design-Operating-System-Prentice-Hall-...

36- http://www.amazon.com/Unix-Network-Programming-Sockets-Netwo...

37- http://www.amazon.com/TCP-Illustrated-Volume-Addison-Wesley-...

38- http://www.amazon.com/TCP-IP-Illustrated-Vol-Implementation/...

39- http://www.amazon.com/TCP-Illustrated-Vol-Transactions-Proto...

40- http://www.amazon.com/User-Interface-Design-Programmers-Spol...

41- http://www.amazon.com/Designing-Interfaces-Jenifer-Tidwell/d...

42- http://www.amazon.com/Designing-Interfaces-Jenifer-Tidwell/d...

43- http://www.amazon.com/Programming-POSIX-Threads-David-Butenh...

44- http://www.intel.com/p/en_US/embedded/hwsw/software/hd-gma#d...

45- http://www.intel.com/content/www/us/en/processors/architectu...

46- http://www.intel.com/p/en_US/embedded/hwsw/hardware/core-b75...

47- http://www.hdmi.org/index.aspx

48- http://en.wikipedia.org/wiki/Digital_Visual_Interface

49- http://www.amazon.com/Essential-Device-Drivers-Sreekrishnan-...

50- http://www.amazon.com/Making-Embedded-Systems-Patterns-Softw...

51- http://www.amazon.com/Python-Programming-Introduction-Comput...

52- http://www.amazon.com/Practical-System-Design-Dominic-Giampa...

53- http://www.amazon.com/File-Systems-Structures-Thomas-Harbron...

54- ...well, I'll stop here.

Of course, the equivalent knowledge can be obtained by trial-and-error, which would take longer and might result in costly errors and imperfect design. The greater danger here is that a sole developer, without the feedback and interaction of even a small group of capable and experienced programmers could simply burn a lot of time repeating the mistakes made by those who have already trenched that territory.

If the goal is to write a small RTOS on a small but nicely-featured microcontroller, then the C books and the uC/OS book might be a good shove in the right direction. Things start getting complicated if you need to write such things as a full USB stack, PCIe subsystem, graphics drivers, etc.