Python String Tricks - Performance considerations
If a string is changed to become bigger, consider trying to find the maximum size of the final string early on in a quick pass (strive »
OpenVPN / DNS / resolv.conf
For Unix users with OpenVPN clients, you may notice that when connecting to a VPN server via OpenVPN, your DNS servers aren't working properly. This might »
Cyclic Permutation
This is an array/list trick that saves about O(n) in space complexity by taking advantage of a given array with integers representing indices. For »
npm and Node.js Management
npm packages install and save Install a package and also write it to package.json under "dependencies":{} npm install <PACKAGE> --save Alternatively, for developer »
Counting the path of sums
Description Given a binary tree with nodes containing integer values (positive or negative), how can you count up all the paths that equal to some target »