Master C++ Templates: Think Like the Compiler.

Modern C++ best practices, diagnostics, and deep dives that build debugging confidence.

What you'll learn
- Write and use function and class templates to eliminate code duplication and improve reusability.
- Understand template specialization, overload resolution, and argument deduction to handle complex type scenarios.
- Debug and interpret compiler diagnostics and cryptic error messages with confidence.
- Explore advanced features like variadic templates, fold expressions, and metaprogramming.
- Apply SFINAE and template constraints to control overload resolution and enforce correctness.
- Understand two‑phase lookup and how it affects name resolution in template code.
- Gain modern C++ best practices on the fly (e.g., auto, decltype, constexpr, CTAD, fold expressions) during real code walkthroughs.
- Explore template metaprogramming insights and learn how templates can act as a compile‑time engine.
- Build STL‑like containers (e.g., myVector) and compare them with standard containers to understand design trade‑offs.
- Develop the ability to think like the compiler — inspecting instantiations, object files, and diagnostics to truly master template behavior.

Requirements
- Basic knowledge of C++ syntax (variables, functions, classes).
- Ability to compile and run C++ programs in any IDE or command line or online compiler. (Guidance will be provided where needed)
- Optional: A modern C++ compiler (supporting at least C++17; C++20/23 recommended). If you don’t have one, you’ll learn how to use online compilers instead.
- Optional: CMake with VS Code (used in some demos). You can still follow along with your preferred IDE or an online compiler.
- Curiosity and willingness to experiment with the code examples.

Description
Master C++ Templates: Think Like the Compiler

Templates are one of the most powerful — and most misunderstood — features of modern C++. They enablegeneric programming, code reusability, and compile‑time efficiency, but for many developers, they remain a source of confusion and frustration.

This course is designed todemystify C++ templates step by step, starting from the basics and building all the way up to advanced concepts like specialization, variadic templates, and metaprogramming. Along the way, you’ll learn not justhowtemplates work, but alsowhythey behave the way they do — with live demos, debugging sessions, and practical examples.

What makes this course different?

This course goes beyond syntax. In this course, you’ll not only master C++ templates but alsopick up Modern C++ best practices on the flyas we work through real examples. Whenever a situation calls for it, I’ll pause to highlight modern idioms, safer coding patterns, and efficiency tips — so you’re learning professional practices naturally, in context.

We don’t stop at writing code. Wedig deeper into compiler diagnostics, analyzecryptic error messages, and eveninspect object filesto understand what the compiler actually generates. This behind‑the‑scenes exploration will give you the confidence to debug, reason about, and optimize template code like a pro.

What You’ll Learn

Why templates matter in C++

Write and apply function templates — and understand how they replace repetitive overloads

Create and use class templates

Handle multiple types with templates

Applyspecializationand partial specialization

MasterSFINAEand template constraints

Debug template errors with confidence

Diagnosecompiler output andobject files(.obj file)

Diagnosecompiler outputonline

ExploreVariadic templatesandFold Expressions

Apply templatemetaprogrammingandcompile‑time logic

Understand howstd::begin()andstd::end()work internally

Use auto vs decltype effectively in templates

Implement STL‑like classes (std::array,std::vector)

Port Makefile projects to Modern CMake

C++ tips, tricks, andbest practices

Hands‑On Demos

Every concept is reinforced withlive coding demonstrations. You’ll see how to:

Start with a problem statement and incrementally refactor it using templates

Convert overloaded functions into clean, reusable function templates

Debug tricky cases like std::string and const char* specialization

Explore what code the compiler actually generates behind the scenes

ApplySFINAEto control overload resolution and constraints

Port a legacy Makefile project into amodern CMake build system

Assignments and GitHub source code are included so you canpractice, experiment, and build confidence.

Who This Course Is For

This course is designed for:

C++ developerswho want to go beyond syntax and truly master templates, from basics to advanced metaprogramming.

Intermediate programmerswho already know C++ fundamentals and want to strengthen their debugging and problem‑solving skills.

Engineering studentspreparing for interviews, competitive programming, or advanced coursework where templates and STL are essential.

Professionals working with legacy codewho want to modernize projects using modern C++ standards.

Self‑taught learnerswho struggle with cryptic compiler errors and want to build confidence in diagnosing and fixing them.

Anyone curious about STL internalsand eager to understand how features like std::begin(), std::end(), auto, and decltype work under the hood.

By the end of this course, you won’t just “know” templates — you’ll be able toapply them with confidence, debug them effectively, and leverage them to write modern, reusable, and high‑performance C++ code.

Who this course is for:
- Anyone who can write simple C++ programs with functions and classes (and has seen basic inheritance) will be ready to dive into templates and learn how to debug them with confidence.
- Self‑taught learners and beginners with some C++ experience who find compiler errors intimidating and want to build confidence in debugging.
- Students and professionals preparing for interviews, competitive programming, or advanced coursework.
- Developers working with legacy code who want to modernize projects using C++11/14/17/20/23.
- Curious learners and enthusiasts eager to explore STL internals and understand how features like std::array, std::begin(), and decltype are implemented.
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