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Andrew Berls andrewberls

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@andrewberls
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 / 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; }
@andrewberls
andrewberls / sticky_footer
Created June 20, 2013 01:49
@andrewberls
andrewberls / countries-example.js
Last active December 18, 2015 04:38
// JSON structure:
{
"countries" : [
{ "name": "CountryName", "alternatives": "One Two" },
{ ... }
]
}
@andrewberls
andrewberls / dynamic_functions.js
Created May 30, 2013 22:43
Attempting to dynamically define methods in JS
var methods = ['one', 'two'],
test = {};
for (var i=0; i<methods.length; i++) {
var name = methods[i];
test[name] = function() { console.log(name); }
}
test.one() // 'two'
@andrewberls
andrewberls / wat.js
Created May 23, 2013 06:53
var x = 0;
function test() {
x = 1;
y = 2;
var z = 3;
}
test();
@andrewberls
andrewberls / bash_command_count.rb
Created May 15, 2013 23:25
counts = Hash.new(0)
File.read("#{Dir.home}/.bash_history").each_line do |line|
cmd = line.split.first
if cmd == "git"
cmd = line.split.take(2).join("_") # git_push
end
counts[cmd] += 1
end
counts.sort_by { |key, value| value }.reverse.each do |cmd, count|
@andrewberls
andrewberls / rotateMatrix.js
Created February 26, 2013 20:53
Function to rotate matrices
function rotateMatrix(matrix, numRot) {
var result = [],
buf = [];
if (numRot != 0) {
for (var i=0; i<matrix.length; i++) {
for (var j=0; j<matrix.length; j++) {
buf.push(matrix[j][i])
}
result.push(buf.reverse())
@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