Constructor Template Argument Deduction Best Practices
summary
C++17 constructor template argument deduction (CTAD) works but needs rules: use CTAD only when constructors do pure forwarding so code loses visual noise but not behavior, keep factory functions for helpers like make_tuple that unwrap reference_wrappers, add explicit deduction guides when the constructor needs nontrivial type synthesis (two iterator overloads → value_type), prefer parameter packs at the end of constructors to match function template syntax, and understand brace initialization chooses copy unless an initializer_list is explicit.
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chapters (8)
- 0:00Introduction
- 0:28Elevator Pitch
- 1:21Vector from Initializer
- 2:28Deduction Rule
- 2:57Factory Functions
- 3:42Braces
- 4:12Copying
- 5:09Conclusion
