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🟡 Changes recommended
The explicit-object accessor returns copies instead of preserving the cv/ref behavior it illustrates.
2 open issues
What changed in this PR
Extends Chapter 09’s function coverage through C++26 without changing executable examples or the C++20 build baseline.
Changes:
- Adds advanced discussion of modern callable APIs, forwarding, and coroutine lifetimes.
- Updates the standards timeline and normalizes existing section numbering.
| File | Description |
|---|---|
01_low_level/09_functions/README.md |
Expands modern function coverage and updates chapter structure. |
Review effort: Balanced
| int value = 0; | ||
| template<class Self> | ||
| decltype(auto) get(this Self&& self) { | ||
| return std::forward<Self>(self).value; |
| * std::quick_exit: doesn't execute static destructors, but does flush critical IO and call handler if exists | ||
| --- | ||
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| ## Advanced function rules that matter from C++20 to C++26 |
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Reviewed the nine function examples and expanded advanced treatment of
consteval, C++23 explicit object parameters,invoke_r,move_only_function, C++26function_ref, coroutine frames, and C++26 pack indexing. Normalized all numbered H2 sections to the established chapter contract. Documentation-only and C++20 baseline preserved. The reusable Python chapter-structure checker is introduced separately in PR #15; this chapter's structure is prepared for that validation.