Tags » Aggregation

Jumping the aggre chasm

On the subject of individuality versus group aggregates. And where the characteristics just don’t add up because they do. As in:

  • Elections. Every vote counts, but no single one matters.
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Innovation (technologicallly Driven)

The Gulf Stream, Meteors, and the Russo-Sino Alliance

There is too much going on in the world to transmit my understanding in posts once a day. To remedy that I’ll offer a few sources for you all to explore for yourself. 224 more words


mongodb exception: can't convert from BSON type String to Date

Problem: When attempting to do an aggregation on timestamps which are stored as strings, mongodb is unable to do the conversion

repmongo:SECONDARY> db.collection.aggregate(
…     { $match : { "type" : "Review"}}, …

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UML Class Diagram: Association, Aggregation and Composition

UML Class Diagram: Association, Aggregation and Composition

The UML Class diagram is used to visually describe the problem domain in terms of types of object (classes) related to each other in different ways. 678 more words

Design Pattern

The Wisdom of Charles Murray, To You Millenials

Ash Milton over at This Rough Beast, whom I strongly recommend you read, posted a talk by Charles Murray. To say that I agree with him would be an understatement. 63 more words


You Like Us? You'll Love These Guys, Too.

I guess I really like lists. So here are some of my favorites for keeping up with the trends here in the heartland.

1. For my bros out there, I know I don’t cater to you well. 198 more words