CRUD Minus R on Mongo DB

20,000 American Flags are displayed for every resident of Massachusetts who died in a war over the past 100 years, Boston Common, Boston, MA, Memorial Day, 2011

It is a beautiful day in the Twin Cities of Minneapolis and St. Paul part of the Memorial Day 2018 weekend. The forecast calls for very warm days. On Monday the temperature will be reaching 95F. My wife and I decided to go for a walk first thing in the morning. Today Saturday we got up at our usual time (05:30 AM CDT), had breakfast (yogurt, granola, blueberries, strawberries, bananas and a cup of milk with a shot of espresso) and headed out. As the walk progressed, we ran into several people getting their daily walk out of the way in order to avoid the high temperatures. Showered and sat in front of my computer. I will be working for the next four hours or so. This afternoon my wife and I will attempt a walk around one of the lakes in Minneapolis. Will be very hot but we are planning on a stroll and a stop for ice cream and water. Continue reading “CRUD Minus R on Mongo DB”

Using the MongoDB Shell

I believe it was Albert Einstein who said “Any man who reads too much and uses his own brain too little falls into lazy habits of thinking”. I like to read in order to learn about different subjects, mostly associated with computer science and technology. I also like to experiment with what I am reading in order to verify that I understand the material. Continue reading “Using the MongoDB Shell”

Radix Sort

Earlier this week I ran into a description of Radix Sort. This sorting algorithm has been around for a few centuries (yes; that is not a typo). The algorithm dates back to 1887 to the work of Herman Hollerith (and yes; he was the inventor of the Hollerith Card Code for punched cards used in the past century).

This sorting algorithm is not the fastest, it requires additional space, but has been around for a long time. When you read about it, seems like it should not work; but it does. Continue reading “Radix Sort”