Calling Functions: A Tutorial

on YouTube ↗01h 01m

" summary

Covers the concrete mechanics that determine which function the compiler actually calls: name lookup, template argument deduction, then overload resolution producing a single best candidate, followed by access checks, template specialization, virtual dispatch and deleted-function rules. Demonstrates surprises: hiding and two‑phase lookup, ADL only for user types, access is checked after overload resolution, deleted functions still exist and cause errors. Uses concise code examples and slides, points to cppreference and deeper talks for full details.

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" chapters (16)

1. 0:00Intro
2. 3:04Overview
3. 5:49Un-Qualified Name Lookup
4. 15:48Argument Dependent Lookup
5. 20:13Two-Phase Lookup
6. 22:06Template Argument Deduction
7. 25:52Finding a Best Match (1 Parameter)
8. 31:09Templates vs. Non-Templates
9. 33:11Promotions (Rank 2)
10. 35:04Standard Conversions (Rank 3)
11. 38:22User-Defined Conversions
12. 42:44Finding a Best Match (Multiple Parameters)
13. 46:34Access Labels
14. 53:34Virtual Dispatch
15. 54:16Deleting Functions
16. 56:44Summary

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