Things Ruby isn't concerned with that people typically have problems with in C++:

- No compiling or linking phase in Ruby. Linking problems can be hairy in large systems.

- Header file hell

- The static keyword (there are four different contexts)

- Difference between a pointer and reference

- public, private, protected inheritance

- Differences between dispatch (and underlying impl) of virtual and nonvirtual methods

- method hiding

- diamond of death

- visibility vs accessibility

- casting idioms (static, dynamic, const, reinterpret)

- ugly libraries (STL, ATL, MFC, COM) yeah, i said STL is ugly.

- templates (Ruby doesn't need templates since everything is dynamic)

- No language level string data type (our product has at least six representations of strings here and there that need to be converted at the bit level).