Good posts about Semaphore vs. Mutex MUTEX VS. SEMAPHORES – PART 1: SEMAPHORES MUTEX VS. SEMAPHORES – PART 2: THE MUTEX MUTEX VS. SEMAPHORES – PART 3 (FINAL PART): MUTUAL EXCLUSION PROBLEMS MUTEX IS NOT THE SAME AS BINARY SEMAPHORES. Important difference between Mutex and Semaphore. – Mutex lock is released by the thread which [...]
Install python and openCV to windows7
21
2012 Nov
reference : http://imky.egloos.com/2969966 http://www.davidhampgonsalves.com/2011/05/OpenCV-Python-and-Windows-7-setup-in-5-minutes-or-less http://mitchtech.net/opencv-python/ Prerequisites Python 2.7 - http://www.python.org/ NumPy(Numerical Python) - http://sourceforge.net/projects/numpy/files/ SciPy - http://sourceforge.net/projects/scipy/files/scipy/ Download openCV with .exe from http://opencv.org Install it to c:\openCV copy c:\openCV\build\python\2.7\cv2.pyd c:\Python27\Lib\site-packages\ test by running C:\openCV\samples\python\drawing.py
JD-GUI bug, it dropped explicit casts
14
2012 Mar
최근에, framework 을 수정할 일이 있었는데, 큰 문제를 일으킬뻔 한 jd-gui 버그가 있어 글로 정리.. 1. 시스템이 여러개라 메인시스템을 제외하고 framework library 의 소스가 따로 관리되지 않고 있었음. 2. framework 의 개선이 있어서 작업을 하고 메인시스템 외의 시스템은 decompile 해서 해당 함수 수정하고 다시 compile 해서 jar로 생성 후 반영 위와 같은 작업을 하고 있었는데 [...]
Tip of uploading images to tumblr using OAuth on iOS
18
2012 Feb
To make my app, merge&share, I had to use OAuth to upload multiple services including tumblr. There’s some problem, and I still don’t know which one is problem between OAuthConsumer library and tumblr. OAuthConsumer Library makes authorization header using all parameters and if I include NSData, it may not work correctly. – OR – Tumblr [...]
rails 설치중 zlib 오류 발생시 – ubuntu
01
2011 Apr
cd ruby-1.9.2-p0/ext/zlib ruby extconf.rb make sudo make install sudo gem install rails http://stackoverflow.com/questions/769496/ubuntu-noob-rails-install-fails-on-zlib