Good refs on Stack Overflow

C

• everything is pass-by-value
• cannot declare functions inside struct

C++

• string literal
  • char *str="string"; vs. char str[]="string";
  • life-time of string literal [2]
  • adjacent string literals are concatenated in translation phase 6
• array decayed to pointer: when & when not
• pointer vs. reference
• compare pointers
• class vs. struct
• static_cast vs. dynamic_cast vs. const_cast vs. reinterpret_cast
• cout double value with full precision
• Why cout works weird for unsigned char?
• const reading | cvqualifiers | const correctness | The C++ const Declaration: Why & How | const member function
• get the type of an array element
• set, clear, toggle, and check a single bit
• iostream::eof inside a loop condition is wrong!!!
• set with custom comparator
• Undefined Behavior and Sequence Points
• copy files (for all types/without knowing types)

OpenCV

• setup in VS
• missing dll issues
• automatic memory management (e.g. Mat)
• waitKey()
• imwrite() supported types
• comma-separated initializer for Mat: Mat mat = (Mat_<float>(2,3) << 1, 2, 3, 4, 5, 6);
• apply function to each image pixel
• set all Mat values at given channel to given value
• set Mat values given condition
• convertion from Mat to vector
• create rotated rectangular or polygonal ROI/mask
• kmeans() on color images (per pixel [RGB] as a sample)
• HOG feature | CascadeClassifier::detectMultiScale() parameters

Dos

• Rename and move files in batch

Mixed Programming

• Matlab/C++ - mixed programming
• Matlab/OpenCV - Mat transfering through XML

Regex

• reference list
• find/replace in VS

Other

• Convert recursion to iteration

---

Note: If one thread is both applied to C and C++, I will put it in C++.