Embracing the **noexcept** Operator and Specifier *Safely*
summary
Explains that the noexcept operator is a compile time query used mainly to let generic code pick a faster path for moves and swaps, demonstrates a vector push_back example that saves one fewer copy when moves are nonthrowing, shows microbenchmarks and object‑size tradeoffs where speed gains are typically negligible but size can drop, documents compiler edge bugs and differences across standards, cites a 1,375‑page book with 100+ pages on noexcept, and advocates a C++23 fix around conditional noexcept and cross‑TU optimization.
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chapters (24)
- 0:00Start
- 7:07Conservative Behavior
- 7:56Compilers Have Bugs
- 9:51Compound Expressions
- 10:12Composition
- 11:17User Provided Special Member Functions
- 18:21Use Cases
- 19:49What's the Strong Exception Safety Guarantee
- 33:47The Pitfalls
- 35:57Object Code Optimization
- 36:40Library Traits
- 44:23Generic Context Function
- 44:54Enforce Correctness at Compile Time
- 47:43Stack Unwinding
- 53:00Explicitly Declaring a Destructor
- 57:37Node Cept Wrapper
- 1:05:24Pitfalls
- 1:13:05Costly Runtime Performance
- 1:13:39The Zero Cost Exception Model
- 1:15:42Micro Benchmark
- 1:16:46Performance Benefit
- 1:17:24Optimization Conflated with Code Size
- 1:21:15Conclusion
- 1:26:14Why Are You Allowed To Mark a Destructor as no except False
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