HomeTom - CS

Some links: Remove duplicate lines with uniq A user's guide for GNU AWK AWK one-liners AWK can process each line of a file and gives rel...

Quite interesting: http://en.wikipedia.org/wiki/Pi_Day 探索π值大事记 China Digital Science and Technology Museum .

Programmer Competency Matrix This can be useful for self-checking on programming skills.

The problem is how to do string matching on a pattern including '*' (0-any characters) and '?' (0-1 character) wildcard char...

The book is pretty easy to read. There are over 20 chapters, each covers one area of topic, includes a short discussion and a small number o...

Problem: Given a stream of n elements (n is unknown), sample an element with the same probability for each element in ONE pass. (e.g. given ...

Pretty good introduction to ASP.NET's Membership, Roles, and Profile: http://www.4guysfromrolla.com/articles/121405-1.aspx Get UserId: ...