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Overview for 'derekrethans'

MongoDB and arbitrary key names

Written by Derick Rethans / Original link on Feb. 11, 2014

MongoDB and arbitrary key names London, UK Tuesday, February 11th 2014, 09:41 GMT I hang out on the MongoDB IRC channel (Freenode/#mongodb) quite a bit, and an often recurring question is inherently abour storing values as keys. One of the examples is storing timed data points like this: { person:…


Understanding Valgrind errors (1)

Written by Derick Rethans / Original link on Feb. 4, 2014

Understanding Valgrind errors (1) London, UK Tuesday, February 4th 2014, 09:22 GMT While debugging segmentation faults (crashes) in PHP and its extensions, I often use Valgrind to assist me finding the root cause. Valgrind is an instrumentation framework for building dynamic analysis tools. It cont…


Hunting for Postboxes (part 1)

Written by Derick Rethans / Original link on Jan. 28, 2014

Hunting for Postboxes (part 1) London, UK Tuesday, January 28th 2014, 09:11 GMT The new year brings new hobby projects! In this year, I am going to try to photograph as many UK postboxes as I can. For this I am going to build some apps and overview maps, but I will write more about those later. A…