Software Engineering

Git is a Map and SHA1 hash

Git is exactly a map data structure or more precisely a persistent map which maps blobs to hashes. We have demonstrated how Git is simply a hash map and with this view, its working is simplified.

git

Git is an Onion

Git version control is like an onion and has 4 layers namely a Distributed Revision Control System, a Revision Control System, a Simple Content Tracker and a Persistent Map. We have demonstrated its working based on the layers

Software Engineering

Implementing printf and scanf in C

Understanding how printf and scanf works internally is the key to writing advance code. Key concepts involved are variable number of arguments in functions using vararg in C. Use of internal buffer to prepare the input or output.