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andrewberls / cs.sh
Created July 31, 2013 06:44
cs bash alias
# Run git status if in git repo, else ls -la
function cs {
clear
if ! git ls-files >& /dev/null
then
ls -la
else
git status
fi
}
@andrewberls
andrewberls / gist:5008788
Last active June 7, 2018 23:52
Brainfuck Interpreter Challenge
Brainfuck (http://en.wikipedia.org/wiki/Brainfuck) is an strange language noted for its extreme simplicity - programs are written using 7 commands in total, and executed sequentially.
An 'instruction pointer' starts at the first command, executes it, and normally moves forward to the next command (with one exception).
The program terminates when the instruction pointer moves past the last command.
For those familiar with Turing machines, this is a very similar concept. We'll have a 'tape' of cells holding our values, a pointer to the current cell, and an instruction pointer looping through the program.
The commands we'll be working with are as follows (here, 'pointer' refers to the current cell pointer):
> Move the cell pointer to the cell on the right
< Move the cell pointer to the cell on the left
@andrewberls
andrewberls / pre-push
Created October 22, 2014 19:15
Prevent git pushes directly to master. Install to .git/hooks/pre-push
#!/bin/sh
# Pre-push hook to prevent pushes to master branch.
pushed_branch=`git rev-parse --abbrev-ref HEAD`
if [[ "$pushed_branch" == "master" ]]
then
echo "[Notice] Pre-push hook preventing push to master. Create a feature branch instead."
exit 1
module A
def do_something
puts 'A->do_something'
super
end
end
module B
def do_something
puts 'B->do_something'
class Cassandra
alias :old_insert :insert
def insert(column_family, key, hash, options = {})
puts "Injected! Send AMQP notification here..."
old_insert(column_family, key, hash, options)
end
end
tracerColors = [
'#1B184F',
'#312c91',
'#423ac0',
'#9c4274'
]
class Tracer extends Kona.Entity
@andrewberls
andrewberls / index.html
Last active December 20, 2015 09:49
Bash command visualization
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Bash Command Visualization</title>
<style type="text/css">
* { margin: 0; padding: 0; }
#chart {
@andrewberls
andrewberls / index.html
Last active December 20, 2015 08:39
d3 Impact Visualization
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>D3 Page Template</title>
<style>
* { margin: 0; padding: 0; }
body { padding: 30px; }
// JSON structure:
{
"countries" : [
{ "name": "CountryName", "alternatives": "One Two" },
{ ... }
]
}