There may very well be a clever way to refactor the if statement, but this does work, so I can't be bothered.
May 17, 2015
My adventures with the Internet continue. I decided to get scientific about it though. So I've written a script (in python naturally) to log when the network is down. It does so, by invoking fping in an infinite loop and checking its return code for success, in which case the subprocess module will raise an exception. This exception is caught, the time is logged and the user needs to hit a key to continue. Eventually, I'll probably design a pretty plot, to get some insight as to when the network flakes.
May 11, 2015
A follow up from yesterday's post on locating the direct URL to any flickr photo. I've now added save capability to the current directory. As a final step, I think I'd like to set the desktop background to the downloaded photo automatically. That's for another day, though. With the new feature, the code is below:
The code above will allow you to download images from flickr, even when the photographer has disabled the downloading of their images. Just send it the URL to the any of the image sizes as the "--url=" parameter. As usual, I'm open to suggestions regarding style and readability.
April 28, 2015
April 23, 2015
April 17, 2015
Those who know me know me to be a rather big supporter of the left-wing British MP George Galloway, because of his foreign policy work in the Middle East. This is a personal bias I have.
My economic views, however, are less personal and more scientifically justified. When any economic downturn hits, there are those in governments that say we need to collectively tighten our belts till we grow again and because we the people are the government, the government is included in this list This is what I would term the austerity lot. There are others, however, who feel that government must be the spender of last resort, thus expanding and making up for the slack in the rest of the economy -- the Keynesians. Which strategy does better?
To get an answer, we must define the terms -- what does better mean? Better in the sense of a shallower dip in aggregate economic growth as measured by GDP. Our three candidate countries -- posterboys for austerity, Germany, posterboys for ramping up government spending, China, and a third country that did something in between, the United States. The results are below, followed by the code used to generate the plot:
April 1, 2015
Until I decide otherwise, I'm in south bay and am without a car. So, I'm reliant on Caltrain, whose website leaves much to be desired in the area of easy to access information. How do I know this? Well, if I get annoyed with the user experience, then you can be sure a majority of users are frustrated. However, the good people at caltrans do provide GTFS-compliant feeds, which are trivial to parse. Without further ado:
And a run of it:
March 30, 2015
A Splay tree is seemingly, a combination of a binary tree and a linked list, with performance characteristics of the former at average case and the latter at worst case. But, a big O reference page suggests that the average and worst cases are the same. What gives?
March 23, 2015
Readability is defined as the ease with which a written text can be understood by a reader. There are a bunch of metrics for calculating the readability of a piece, many of which are incorporated into koRpus. To use this, read in a text file from your local drive in the following manner: R will then spit out something looking like this:
March 21, 2015
I'm a big fan of small. My preferred IRC client is only 59k for instance (that's right kilobytes, not megabytes or gigabytes). I know most of the known world doesn't value minimalism, but I fixed the port on FreeBSD and have submitted a patch to fix it.
When I program, I like to have the logging up to the max. Others don't. The shell pipe below filters the logging messages out, leaving only the run output, output first:
% java -jar foo.jar . ____ _ __ _ _g, /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v1.2.1.RELEASE) Sending a new message. ReceivedAnd the magic incantation to remove all the extraneous messages is: mvn spring-boot:run | grep -v "`date +'%Y-%m-%d %H:%M'`" | grep -v '^\['; I do hope that makes your getting on with peers a lot easier.