C++ roadmap

Ordered runs of problems, and nothing else: no reading, no progress bar, just the sequence. For a syllabus that interleaves written explainers and can be worked through with friends, see tracks.

C++: write what you would ship

Every C++ track in course order. RAII lands before pointers because everything later is a special case of it, copy and move land before containers so the cost lints read as arithmetic, and errors come last because the argument needs the vocabulary of the six tracks before it.

32 problems

1 A correct program that still fails Easy 2 Read the diagnostic before you touch the code Easy 3 What gets compiled with your code Easy 4 int is not a width Easy 5 The comparison that is always true Medium 6 Braces refuse to lose your data Easy 7 auto copies, and does not say so Medium 8 The destructor is the whole idea Easy 9 Write the guard yourself Medium 10 The delete you will forget Medium 11 Exception safety you did not have to write Medium 12 The copy you did not write Easy 13 std::move does not move anything Medium 14 The line that does nothing, twice a second Medium 15 Owning something raw costs you five functions Hard 16 What is left after you move from it Medium 17 Say it in the signature Easy 18 A raw pointer owns nothing Medium 19 The gap between new and the smart pointer Medium 20 Two owners, and neither one ever leaves Hard 21 The vector that moves everything, repeatedly Easy 22 Reading text you do not own Medium 23 The lookup that writes Medium 24 The loop stops having bugs once it has a name Medium 25 Erasing while you walk Medium 26 The accessor that will not let you look Easy 27 The conversion nobody asked for Medium 28 The handle you left in the door Medium 29 Zero is an answer Easy 30 The catch that threw half of it away Medium 31 The promise the standard library reads Medium 32 The handler that hid the failure Medium