C++ FAQ / Section 4 / FAQ 4.16

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Revised Jul 4, 2012

[4.16] What updates were made for the 09/06 release?

2 New FAQs:

• [4.16] What updates were made for the 09/06 release?
  (created)
• [35.18] Why am I getting errors when my template-derived-class uses a nested type it inherits from its template-base-class?
  (created thanks to Victor Bazarov)

11 Changed FAQs:

• [2.1] Where's the closest mirror site to access this document?
  (added the new mirror site in China thanks to dd_engi, and changed the output to a table)
• [6.18] What should I tell people who complain that the word "FAQ" is misleading, that it emphasizes the questions rather than the answers, and that we should all start using a different acronym?
  (added "DIRR" acronym thanks to Andrew D. Hwang)
• [13.12] I still don't get it. Why shouldn't my Matrix class's interface look like an array-of-array?
  (wordsmithed)
• [20.6] I have a heterogeneous list of objects, and my code needs to do class-specific things to the objects. Seems like this ought to use dynamic binding but can't figure it out. What should I do?
  (corrected the name of Meyer's "Law of Inversion" thanks to Darren Hiebert)
• [23.3] Should I use protected virtuals instead of public virtuals?
  (fixed a typo in the code (f_double is now f_dbl) thanks to Al-Asham Said)
• [29.18] Why is cos(x) != cos(y) even though x == y? (Or sine or tangent or log or just about any other floating point computation)
  (added #include <iostream> thanks to Phil Buluschek)
• [34.3] Is the storage for a std::vector<T> guaranteed to be contiguous?
  (removed obsolete caveat from when this had not yet been ratified thanks to Alberto Ganesh Barbati and Gerald Thaler)
• [35.14] How does the C++ keyword export help with template linker errors? Updated!
  (fixed a bug in the last paragraph by changing NO_EXPORT_KEYWORD to USE_EXPORT_KEYWORD thanks to Luís Bruno)
• [35.19] Why am I getting errors when my template-derived-class uses a member it inherits from its template-base-class?
  (wordsmithed, clarified)
• [35.20] Can the previous problem hurt me silently? Is it possible that the compiler will silently generate the wrong code?
  (rewrote to include non-dependent type-names in addition to non-dependent member-names thanks to a discussion with Victor Bazarov)
• [40.3] Are there any pretty-printers that reformat C++ source code?
  (added "ProFactor StyleManager" thanks to Matt Godbolt)