Back to Basics: Designing Classes (part 2 of 2)
summary
Shows concrete rules and gotchas: use value initialization with {} or in-class initializers instead of empty default constructors; prefer member-initializer lists and delegating constructors; declare single-argument constructors explicit to avoid implicit conversions. Demonstrates surprising sizes: bool+float+bool is 12 bytes not 6, switching to double makes it 24, but reorder members to reduce padding (largest-first) drops it to 16. Const data members/delete assignment, overload const/non-const begin/end, and prefer iterator typedefs to encapsulate return types.
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chapters (31)
- 0:00Introduction
- 1:37Value initialization
- 6:12Default constructor
- 9:08Core guidelines
- 11:53Delegate constructors
- 13:12Inclass initializers
- 20:38Single argument constructors
- 21:53Order of data members
- 23:42Alignment
- 25:19Padding
- 26:28Double first
- 31:11Align data members
- 32:00Bit fields
- 34:49Const functions
- 36:44Types of const
- 40:41Return immutable
- 41:40Const correctness
- 43:13Unique pointer
- 44:39Cont
- 45:39Encapsulation
- 48:10Data
- 48:45encapsulate decisions
- 49:22const data members
- 49:34reference data members
- 49:55const and reference
- 51:18pointer and reference
- 51:44reference wrap
- 52:48one thing left
- 53:03bonus
- 57:52summary
- 58:41move
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