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@tevino
tevino / fix_virtualenv
Last active December 28, 2024 15:11
Fix python virtualenv after python update
#!/usr/bin/env bash
ENV_PATH="$(dirname "$(dirname "$(which pip)")")"
SYSTEM_VIRTUALENV="$(which -a virtualenv|tail -1)"
BAD_ENV_PATHS="/usr/local"
echo "Ensure the root of the broken virtualenv:"
echo " $ENV_PATH"
@olivierlacan
olivierlacan / migrate_postgresql_database.md
Last active April 19, 2025 14:26
How to migrate a Homebrew-installed PostgreSQL database to a new major version (9.3 to 9.4) on OS X. See upgraded version of this guide: http://olivierlacan.com/posts/migrating-homebrew-postgres-to-a-new-version/

This guide assumes that you recently run brew upgrade postgresql and discovered to your dismay that you accidentally bumped from one major version to another: say 9.3.x to 9.4.x. Yes, that is a major version bump in PG land.

First let's check something.

brew info postgresql

The top of what gets printed as a result is the most important:

@ThatRendle
ThatRendle / explanation.md
Last active July 3, 2022 07:56
Why I was previously not a fan of Apache Kafka

Update, September 2016

OK, you can pretty much ignore what I wrote below this update, because it doesn't really apply anymore.

I wrote this over a year ago, and at the time I had spent a couple of weeks trying to get Kafka 0.8 working with .NET and then Node.js with much frustration and very little success. I was rather angry. It keeps getting linked, though, and just popped up on Hacker News, so here's sort of an update, although I haven't used Kafka at all this year so I don't really have any new information.

In the end, we managed to get things working with a Node.js client, although we continued to have problems, both with our code and with managing a Kafka/Zookeeper cluster generally. What made it worse was that I did not then, and do not now, believe that Kafka was the correct solution for that particular problem at that particular company. What they were trying to achieve could have been done more simply with any number of other messaging systems, with a subscriber reading messages off and writing

@pathikrit
pathikrit / SudokuSolver.scala
Last active April 12, 2024 15:00
Sudoku Solver in Scala
val n = 9
val s = Math.sqrt(n).toInt
type Board = IndexedSeq[IndexedSeq[Int]]
def solve(board: Board, cell: Int = 0): Option[Board] = (cell%n, cell/n) match {
case (r, `n`) => Some(board)
case (r, c) if board(r)(c) > 0 => solve(board, cell + 1)
case (r, c) =>
def guess(x: Int) = solve(board.updated(r, board(r).updated(c, x)), cell + 1)
val used = board.indices.flatMap(i => Seq(board(r)(i), board(i)(c), board(s*(r/s) + i/s)(s*(c/s) + i%s)))
@paulirish
paulirish / bling.js
Last active September 13, 2025 12:13
bling dot js
/* bling.js */
window.$ = document.querySelector.bind(document);
window.$$ = document.querySelectorAll.bind(document);
Node.prototype.on = window.on = function(name, fn) { this.addEventListener(name, fn); };
NodeList.prototype.__proto__ = Array.prototype;
NodeList.prototype.on = function(name, fn) { this.forEach((elem) => elem.on(name, fn)); };
@preshing
preshing / build_cross_gcc
Last active August 1, 2025 16:21
A shell script to download packages for, configure, build and install a GCC cross-compiler.
#! /bin/bash
set -e
trap 'previous_command=$this_command; this_command=$BASH_COMMAND' DEBUG
trap 'echo FAILED COMMAND: $previous_command' EXIT
#-------------------------------------------------------------------------------------------
# This script will download packages for, configure, build and install a GCC cross-compiler.
# Customize the variables (INSTALL_PATH, TARGET, etc.) to your liking before running.
# If you get an error and need to resume the script from some point in the middle,
# just delete/comment the preceding lines before running it again.
@kachayev
kachayev / concurrency-in-go.md
Last active September 23, 2025 16:12
Channels Are Not Enough or Why Pipelining Is Not That Easy
@sscarduzio
sscarduzio / relog.sh
Created August 24, 2014 21:20
BtWiFi_with_FON automatic login written as a bash script. I have this running every 10 minutes on my raspberry pi
#!/bin/bash
# CONF
DBG=true
[email protected]
RELOG_PASSW=xxxxxxxxxxxxxxx
# END CONF
package main
import (
"net/http"
"database/sql"
"fmt"
"log"
"os"
)
@jordic
jordic / ssh.go
Created May 27, 2014 14:03
golang mysql throught a tunnel
package main
// based on gist
// https://gist.github.com/ir4y/11146415
// http://stackoverflow.com/questions/21417223/simple-ssh-port-forward-in-golang
// obro conexio ssh amb el server remot.
// tot el que envio al port local ho copio al port remote
// a traves de la conexio remota. Per tant he d'obrir un
// port a la maquina remota?