Effective Modern C++ 42 Specific Ways to Improve Your Use of C++11 and C++14

1. Item 1: Understand template type deduction.
2. Item 2: Understand auto type deduction.
3. Item 3: Understand decltype.
4. Item 4: Know how to view deduced types.
5. Item 5: Prefer auto to explicit type declarations.
6. Item 6: Use the explicitly typed initializer idiom when auto deduces undesired types.
7. Item 7: Distinguish between () and {} when creating objects.
8. Item 8: Prefer nullptr to 0 and NULL.
9. Item 9: Prefer alias declarations to typedefs.
10. Item 10: Prefer scoped enums to unscoped enums.
11. Item 11: Prefer deleted functions to private undefined ones.
12. Item 12: Declare overriding functions override.
13. Item 13: Prefer const_iterators to iterators.
14. Item 14: Declare functions noexcept if they won’t emit exceptions.
15. Item 15: Use constexpr whenever possible.
16. Item 16: Make const member functions thread safe.
17. Item 17: Understand special member function generation.
18. Item 18: Use std::unique_ptr for exclusive-ownership resource management.
19. Item 19: Use std::shared_ptr for shared-ownership resource management.
20. Item 20: Use std::weak_ptr for std::shared_ptr like pointers that can dangle.

21. Item 21: Prefer std::make_unique and std::make_shared to direct use of new.
22. Item 22: When using the Pimpl Idiom, define special member functions in the implementation file.
23. Item 23: Understand std::move and std::forward.
24. Item 24: Distinguish universal references from rvalue references.
25. Item 25: Use std::move on rvalue references, std::forward on universal references.
26. Item 26: Avoid overloading on universal references.
27. Item 27: Familiarize yourself with alternatives to overloading on universal references.
28. Item 28: Understand reference collapsing.
29. Item 29: Assume that move operations are not present, not cheap, and not used.
30. Item 30: Familiarize yourself with perfect forwarding failure cases.
31. Item 31: Avoid default capture modes.
32. Item 32: Use init capture to move objects into closures.
33. Item 33: Use decltype on auto&& parameters to std::forward them.
34. Item 34: Prefer lambdas to std::bind.
35. Item 35: Prefer task-based programming to thread-based.
36. Item 36: Specify std::launch::async if asynchronicity is essential.
37. Item 37: Make std::threads unjoinable on all paths.
38. Item 38: Be aware of varying thread handle destructor behavior.
39. Item 39: Consider void futures for one-shot event communication.
40. Item 40: Use std::atomic for concurrency, volatile for special memory.

41. Item 41: Consider pass by value for copyable parameters that are cheap to move and always copied.
42. Item 42: Consider emplacement instead of insertion.