C/C++
How to find size of an array in C without sizeof
The difference between arr and &arr - basically, arr is of type int *, and &arr is of type (int *)[size].
Very excellent article on the fundamentals of C/C++!
What Every C Programmer Should Know About Undefined Behavior
Some “gotchas” and pitfalls in the C programming language and how sometimes compiler optimizations can make it worse. Long story short is, steer away from undefined behaviors.
This post is from Chris Lattner himeself. Really nice article.
Python
Python Has Big Impact At Red Hat
Why Python is such a cool language and how Python is used in Redhat. Most of redhat’s important infrastructure is written in Python, including but not limited to firewalld, yum, and its successor dnf, and many cloud PaaS tools for OpenShift.