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RichardBarrell / cpath_env.sh
Last active August 29, 2015 13:57
Bourne shell function for adding things to linking, include, etc, paths.
# "cpath_env $DIRECTORY" sets paths appropriately for making gcc+autoconf
# pick up C libraries installed with ./configure --prefix $DIRECTORY.
# example:
# cd /tmp
# tar xf ~/libfoo.tar.gz
# cd libfoo
# ./configure --prefix=$HOME/stuff
# make && make install
@RichardBarrell
RichardBarrell / race_condition.py
Created April 8, 2014 19:47
import thread
import threading
import sys
import dis
import os
done = threading.Semaphore(0)
A = [0]
@RichardBarrell
RichardBarrell / Vagrantfile
Created April 14, 2014 22:40
Typical Lucid Vagrantfile
# -*- mode: ruby -*-
# vi: set ft=ruby :
Vagrant.configure("2") do |config|
config.vm.box = "lucid64"
config.vm.box_url = "http://files.vagrantup.com/lucid64.box"
config.vm.define :lucid do |t|
end
config.vm.network "forwarded_port", guest: 8080, host: 8080
@RichardBarrell
RichardBarrell / main.c
Created July 9, 2014 00:35
Does calling a function defined like "foo()" differ from calling a function defined like "foo(void)"?
#include <stdio.h>
int foo(FOO_ARGS);
int main(int argc, char **argv) {
printf("%d!\n", foo());
return 0;
}
@RichardBarrell
RichardBarrell / hork.c
Created July 14, 2014 11:02
int hork(int x, int y)
{
return x * (x + y);
}
@RichardBarrell
RichardBarrell / gist:941565a570729339240e
Created August 7, 2014 00:26
__reduce__ gets used by pickle and cPickle, when defined by regular Python classes
>>> import pickle
>>> class C(object):
... def __init__(self, banana):
... self.banana = banana
... def __reduce__(self):
... return (C, (self.banana,))
...
>>> pickle.dumps(C(1))
'c__main__\nC\np0\n(I1\ntp1\nRp2\n.'
>>> pickle.loads(pickle.dumps(C(1)))
@RichardBarrell
RichardBarrell / gist:a33a5dcaa022ba784cf7
Created August 10, 2014 14:51
Watching the PCI registers in /sys/ while switching my 3d card on and off 😸
RichardB@narcissus ~$ od -t x1 /sys/bus/pci/devices/0000:01:00.0/config
0000000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
*
0000100
RichardB@narcissus ~$ optirun glxgears >/dev/null &
[1] 3758
RichardB@narcissus ~$ sleep 1
RichardB@narcissus ~$ od -t x1 /sys/bus/pci/devices/0000:01:00.0/config
0000000 de 10 92 13 07 00 10 00 a2 00 02 03 00 00 00 00
0000020 00 00 00 f6 0c 00 00 e0 00 00 00 00 0c 00 00 f0
@RichardBarrell
RichardBarrell / silly_bars.html
Created October 9, 2014 00:06
<!doctype html>
<html><head><meta charset="UTF-8" />
<title>Odd layout example.</title>
<style type="text/css">
#evil-container {
position: relative;
background: #aaffaa;
}
body, #evil-container {
width: 100%;
@RichardBarrell
RichardBarrell / FindBirthday.hs
Created October 23, 2014 13:32
module FindBirthday where
-- compile as: ghc --make FindBirthday.hs -main-is FindBirthday.main
-- or run as: runhaskell FindBirthday.hs
-- and answer "y" or "n" when the program asks you a question. :)
import Data.Time (formatTime, addDays)
import System.Locale (defaultTimeLocale)
-- use 2014 because that was a leap year, and we need all 366 days.
@RichardBarrell
RichardBarrell / Cargo.toml
Created October 31, 2014 12:40
[package]
name = "ie_counts"
version = "0.0.1"
authors = ["Richard Barrell <rchrd@brrll.co.uk>"]
[[bin]]
name = "ie_counts"
crate-type = ["staticlib"]