31 nooby C++ habits you need to ditch

How many nooby C++ habits do you have?

Up your C++ skill by recognizing and ditching these nooby C++ habits. Post how many you fell for!

― mCoding with James Murphy (https://mcoding.io)

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CHAPTERS
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0:00 Intro
0:13 #1. using namespace std
0:42 #2. using std endl in a loop
0:55 #3. index based for when range-for fits better
1:10 #4. rewriting std algorithms
1:34 #5. using C array over std array
1:50 #6. any use of reinterpret cast
2:39 #7. casting away const
3:24 #8. not knowing map bracket inserts element
3:39 #9. ignoring const-correctness
3:59 #10. not knowing string literal lifetime
4:12 #11. not using structured bindings
4:47 #12. out-params instead of returning a struct
5:04 #13. not using constexpr
5:21 #14. forgetting to mark destructor virtual
6:10 #15. thinking class members init in order of init list
6:37 #16. not knowing about default vs value initialization
7:28 #17. MAGIC NUMBERS
7:41 #18. modifying a container while looping over it
8:30 #19. returning std move of a local
9:10 #20. thinking std move moves something
9:42 #21. thinking evaluation order is left to right
10:56 #22. unnecessary heap allocations
11:23 #23. not using unique ptr and shared ptr
12:11 #24. not using make unique and make shared
12:23 #25. any use of new and delete
12:52 #26. any manual resource management
13:24 #27. thinking raw pointers are bad
14:25 #28. using shared ptr when unique ptr would do
14:48 #29. thinking shared ptr is thread-safe
15:26 #30. mixing up const ptr vs ptr to const
16:00 #31. ignoring compiler warnings