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@piscisaureus
piscisaureus / pr.md
Created August 13, 2012 16:12
Checkout github pull requests locally

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

@jbgo
jbgo / git-recover-branch.md
Last active March 29, 2024 05:04
How to recover a git branch you accidentally deleted

UPDATE: A better way! (August 2015)

As pointed out by @johntyree in the comments, using git reflog is easier and more reliable. Thanks for the suggestion!

 $ git reflog
1ed7510 HEAD@{1}: checkout: moving from develop to 1ed7510
3970d09 HEAD@{2}: checkout: moving from b-fix-build to develop
1ed7510 HEAD@{3}: commit: got everything working the way I want
70b3696 HEAD@{4}: commit: upgrade rails, do some refactoring

If you import live data into Google Docs spreadsheets using the importdata function and you want to force a refresh at a certain interval, but you also want to ensure that some cache-busting goes on, append a querystring that's the epoch time value that the refresh occurs, so for a sheet that should grab new data every hour you could force an update like this:

importData("http://example.com/data.csv?" & hour(googleclock()) & ")")

But the url requested looks like this: http://example.com/data.csv?11 if the refresh happened at 11am. The next day at 11, the url will be the same, so there's a chance you may get cached data. To get around this, use an epoch time-based refresh. The formula:

=((date(year(googleclock()),month(googleclock()),day(googleclock())) & " " & time(hour(googleclock()), 0, 0)) - DATE( 1970;1;1))*86400

gives you the epoch timestamp for the time at the current hour. If you wanted the timest

@deanet
deanet / google.sh
Created August 22, 2012 16:09
Uploading File into Google Drive (because grive too many dependencies qt, xorg ? )
#!/bin/bash
## uploading to google
## rev: 22 Aug 2012 16:07
det=`date +%F`
browser="Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:13.0) Gecko/20100101 Firefox/13.0.1"
username="user@domain-apps.com"
password="password"
accountype="HOSTED" #gooApps = HOSTED , gmail=GOOGLE
@catwell
catwell / active.md
Last active December 21, 2023 09:47
Speakerdecks
@pcreux
pcreux / Gemfile
Last active December 11, 2023 20:24
Fast Rails + Heroku Configuration
group :production do
gem 'unicorn'
# Enable gzip compression on heroku, but don't compress images.
gem 'heroku-deflater'
# Heroku injects it if it's not in there already
gem 'rails_12factor'
end
@bokmann
bokmann / JRuby Awesome Performance
Last active August 31, 2023 07:32
brief summary of massive performance improvements with JRuby
# Thee will be more information here when I share the entire problem space I'm working on, but
# in short, this is preview material for my second talk in a series called "What Computer Scientists Know".
# The first talk is on recursion, and goes through several examples., leading up to a problem based
# on a simple puzzle that initial estimates based on performance of a previous puzzle would take years
# to solve on modern computers with the techniques shown in Ruby. That sets the stage for improving the
# performance of that problem with threading, concurrency, and related tuning.
#
# The second talk is on threading and concurrency, touching on algorithmic performance as well.
# Using some knowledge of the problem (board symmetry, illegal moves, etc), we reduce the problem space
# to about .5% of what we initially thought it was. Still, the initial single threaded solution took more
function doHash(str, seed) {
var m = 0x5bd1e995;
var r = 24;
var h = seed ^ str.length;
var length = str.length;
var currentIndex = 0;
while (length >= 4) {
var k = UInt32(str, currentIndex);
(function() {
// NOTE: I have intentionally avoided the use of jQuery in
// the next two functions so as not to obscure any details.
// Updates the DOM in such a way that layout is constantly
// computed and thrown away.
var UpdateThrash = function(data) {
// Get all the labels
var spans = document.querySelectorAll('.item .lab');
@callumj
callumj / 1prep.yml
Created July 14, 2014 13:04
Ansible examples
---
# Configures the system for deploying My School Day
- name: Ensure backend directory exists
file: path=/apps/backend state=directory owner=app group=apps mode=0770
- name: Ensure shared directory exists
file: path=/apps/shared state=directory owner=app group=apps mode=0770
- name: Ensure shared sub directories exist