10 lessons · The Host · Lesson 1 free
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Lesson 1 · On the house
concepts
Constrain a template (C++20).

Lesson 2
ranges
Views over sequences.

Lesson 3
span
A view of contiguous memory.

Lesson 4
constexpr
Work at compile time.

Lesson 5
variant
One of several types.

Lesson 6
expected idea
Error as a value (C++23 direction).

Lesson 7
atomics
A counter without a mutex (carefully).

Lesson 8
threads
std::thread join.

Lesson 9
modules note
Import units when your toolchain is ready.

Lesson 10
Sanitizers
ASan/UBSan on the build line.
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