There’s been a lot made of the recent Dick Smith Electronic debacle. It has changed so much since the 90’s when I use to go in and buy electronic kit sets. Looking for a bargain recently I looked at the website and came across something interesting. These cables are advertised for $14.99 at 50% off.… Read More »
A wonderful book that was given to me back in 2013. Took me 3 years of procrastination before reading it. Highly recommend reading. Full of truisms and relatable stories.
I was researching on what “dnl” meant within a configure.ac file and my Google search showed results from http://www.gnu.org/software/m4/manual/m4-1.4.14/html_node/Dnl.html. Thinking this was the authoritative source, upon reading, I couldn’t for the life of me understand it. After searching some more, it was explained very clearly and succinctly at Stack Overflow of all places. http://stackoverflow.com/questions/3371239/autoconf-dnl-vs In configure.ac, lines commented with… Read More »
Viewing variable values via gdb of a va_list is not as straight forward as gdb> p myvar. It requires a few extra steps not only in execution but in understanding. Read on if you want to know how va_* works and how to view the underlying variables. Step 1: The first step is to understand… Read More »
For some reason I was re-reading a particular section in a book called Mastering Bitcoin by Andreas M. Antonopoulos (http://chimera.labs.oreilly.com/books/1234000001802) and came across this paragraph: This means that a valid block for height 277,316 is one that has a block header hash that is less than the target. In binary that number would have more than the… Read More »
Have you seen the “at” symbol twice with numbers in between? The double at symbols (@@) are known as chunk symbols and is part of the “Unified Format”. You can probably deduce it to some extent by looking at the graphics below: It basically tells you which lines have changed and the range or number… Read More »