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@esmooov
esmooov / ctrr.md
Created May 25, 2012 16:50
Carats and Tildes, Resets and Reverts

Until last night I lived in fear of tildes, carats, resets and reverts in Git. I cargo culted, I destroyed, I laid waste the tidy indicies, branches and trees Git so diligently tried to maintain. Then Zach Holman gave a talk at Paperless Post. It was about Git secrets. He didn't directly cover these topics but he gave an example that made me realize it was time to learn.

A better undo

Generally, when I push out bad code, I panic, hit git reset --hard HEAD^, push and clean up the pieces later. I don't even really know what most of that means. Notational Velocity seems to be fond of it ... in that I just keep copying it from Notational Velocity and pasting it. Turns out, this is dumb. I've irreversibly lost the faulty changes I made. I'll probably even make the same mistakes again. It's like torching your house to get rid of some mice.

Enter Holman. He suggests a better default undo. git reset --soft HEAD^. Says it stag

@brandonb927
brandonb927 / osx-for-hackers.sh
Last active May 5, 2024 13:30
OSX for Hackers: Yosemite/El Capitan Edition. This script tries not to be *too* opinionated and any major changes to your system require a prompt. You've been warned.
#!/bin/sh
###
# SOME COMMANDS WILL NOT WORK ON macOS (Sierra or newer)
# For Sierra or newer, see https://github.com/mathiasbynens/dotfiles/blob/master/.macos
###
# Alot of these configs have been taken from the various places
# on the web, most from here
# https://github.com/mathiasbynens/dotfiles/blob/5b3c8418ed42d93af2e647dc9d122f25cc034871/.osx
@kriswallsmith
kriswallsmith / QSAListener.php
Created August 8, 2012 18:23
implements QSA on Symfony2 redirects
<?php
use JMS\DiExtraBundle\Annotation as DI;
use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
/** @DI\Service */
class QSAListener
{
private $blacklist;
@josephwecker
josephwecker / new_bashrc.sh
Created August 11, 2012 04:36
Replace .bashrc, .bash_profile, .profile, etc. with something much more clean, consistent, and meaningful. Now a repo: https://github.com/josephwecker/bashrc_dispatch
#!/bin/bash
# License: Public Domain.
# Author: Joseph Wecker, 2012
#
# -- DEPRICATED --
# This gist is slow and is missing .bashrc_once
# Use the one in the repo instead! https://github.com/josephwecker/bashrc_dispatch
# (Thanks gioele)
#
# Are you tired of trying to remember what .bashrc does vs .bash_profile vs .profile?
@jmather
jmather / LoginTest.php
Created October 4, 2012 19:55
Authenticate a user login
<?php
namespace Application\Sonata\UserBundle\Tests\Functional;
use IC\Bundle\Base\TestBundle\Test\WebTestCase;
class LoginTest extends WebTestCase
{
/**
* {@inheritdoc}
# Raw transaction API example work-through
# Send coins to a 2-of-3 multisig, then spend them.
#
# For this example, I'm using these three keypairs (public/private)
# 0491bba2510912a5bd37da1fb5b1673010e43d2c6d812c514e91bfa9f2eb129e1c183329db55bd868e209aac2fbc02cb33d98fe74bf23f0c235d6126b1d8334f86 / 5JaTXbAUmfPYZFRwrYaALK48fN6sFJp4rHqq2QSXs8ucfpE4yQU
# 04865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac09ef122b1a986818a7cb624532f062c1d1f8722084861c5c3291ccffef4ec6874 / 5Jb7fCeh1Wtm4yBBg3q3XbT6B525i17kVhy3vMC9AqfR6FH2qGk
# 048d2455d2403e08708fc1f556002f1b6cd83f992d085097f9974ab08a28838f07896fbab08f39495e15fa6fad6edbfb1e754e35fa1c7844c41f322a1863d46213 / 5JFjmGo5Fww9p8gvx48qBYDJNAzR9pmH5S389axMtDyPT8ddqmw
# First: combine the three keys into a multisig address:
./bitcoind createmultisig 2 '["0491bba2510912a5bd37da1fb5b1673010e43d2c6d812c514e91bfa9f2eb129e1c183329db55bd868e209aac2fbc02cb33d98fe74bf23f0c235d6126b1d8334f86","04865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac09ef122b1a9
@webmozart
webmozart / git-find-merge
Created November 15, 2012 14:32
Script to find the merge and PR a commit occurred in
#!/bin/bash
COMMIT=$1
BRANCH=$2
if [ -z $BRANCH ]; then
BRANCH="master"
fi
perl -ne 'print if ($seen{$_} .= @ARGV) =~ /10$/' \
<(git rev-list --ancestry-path --oneline $COMMIT..$BRANCH) \
@beberlei
beberlei / CommandMethodMapper.php
Created November 24, 2012 23:51
Symfony Form DataMapper that uses a command method to write data back on object
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
@nfedyashev
nfedyashev / master.sh
Created June 13, 2013 00:47
Continuous deployment script
# Disable NewRelic pinging
curl https://heroku.newrelic.com/accounts/xxxxx/applications/yyyyyyyy/ping_targets/disable -X POST -H "X-Api-Key: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
heroku maintenance:on --app yourapp-staging
heroku pg:reset DATABASE --confirm yourapp-staging --app yourapp-staging
heroku pgbackups:restore DATABASE `heroku pgbackups:url --app yourapp-production` --app yourapp-staging --confirm yourapp-staging
git remote add heroku_yourapp-staging git@heroku.com:yourapp-staging.git
git push heroku_yourapp-staging $COMMIT_ID:master -f
heroku_run 'rake db:migrate' yourapp-staging
heroku restart --app yourapp-staging
heroku maintenance:off --app yourapp-staging
@debasishg
debasishg / gist:8172796
Last active May 10, 2024 13:37
A collection of links for streaming algorithms and data structures

General Background and Overview

  1. Probabilistic Data Structures for Web Analytics and Data Mining : A great overview of the space of probabilistic data structures and how they are used in approximation algorithm implementation.
  2. Models and Issues in Data Stream Systems
  3. Philippe Flajolet’s contribution to streaming algorithms : A presentation by Jérémie Lumbroso that visits some of the hostorical perspectives and how it all began with Flajolet
  4. Approximate Frequency Counts over Data Streams by Gurmeet Singh Manku & Rajeev Motwani : One of the early papers on the subject.
  5. [Methods for Finding Frequent Items in Data Streams](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.187.9800&amp;rep=rep1&amp;t