This is John’s technology knowledge library!
You can view the previous TILs (Today I Learned) on post archieve.
You can also have a look about who is John via ‘About’ and ‘CV’ page.
Have fun :)
Notice: This page is serviced with physical server. Due to move from UK to South Korea, this page will be down for about 10days from 4th of September (0AM, BST)