Galton and normal distribution

http://en.wikipedia.org/wiki/File:Planche_de_Galton.jpg
and

http://www.youtube.com/watch?v=3m4bxse2JEQ

Object Normalization

http://programmers.stackexchange.com/questions/84598/object-oriented-normalization

some popular design principles. Making a note for reference. 

C++ containers

Courtesy : http://stackoverflow.com/questions/4010097/general-use-cases-for-c-containers

 useful as reference

Generating Functions

These are useful because of Taylor and Maclaurin series (https://www.khanacademy.org/math/calculus/sequences_series_approx_calc/maclaurin_taylor/v/maclauren-and-taylor-series-intuition)

Just a handy tool to use (someday) (e..g http://en.wikipedia.org/wiki/Examples_of_generating_functions)