book-code

In a Nutshell, book-code...

• ...
  has had 12 commits made by 1 contributors
  representing 308,631 lines of code
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  is mostly written in C++
  with a well-commented source code
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  has a young, but established codebase
  maintained by nobody
  with stable Y-O-Y commits
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  took an estimated 81 years of effort (COCOMO model)
  starting with its first commit in April, 2013
  ending with its most recent commit over 11 years ago