hest

def get_count(q):
    count_q = q.statement.with_only_columns([func.count()]).order_by(None)
    count = q.session.execute(count_q).scalar()
    return count

q = session.query(TestModel).filter(...).order_by(...)

# Slow: SELECT COUNT(*) FROM (SELECT ... FROM TestModel WHERE ...) ...
print q.count()

CrookedNumber

Removing the last commit

To remove the last commit from git, you can simply run git reset --hard HEAD^ If you are removing multiple commits from the top, you can run git reset --hard HEAD~2 to remove the last two commits. You can increase the number to remove even more commits.

If you want to "uncommit" the commits, but keep the changes around for reworking, remove the "--hard": git reset HEAD^ which will evict the commits from the branch and from the index, but leave the working tree around.

If you want to save the commits on a new branch name, then run git branch newbranchname before doing the git reset.

raydog

var E_PREFIX_RATE = 0.25;

// All of our word lists:
var _word_lists = {
  
  verb : [
    "implement", "utilize", "integrate", "streamline", "optimize", "evolve", "transform", "embrace",
    "enable", "orchestrate", "leverage", "reinvent", "aggregate", "architect", "enhance", "incentivize",
    "morph", "empower", "envisioneer", "monetize", "harness", "facilitate", "seize", "disintermediate",

joyrexus

A quick overview of the node.js streams interface with basic examples.

This is based on @brycebaril's presentation, Node.js Streams2 Demystified

Overview

Streams are a first-class construct in Node.js for handling data.

Think of them as as lazy evaluation applied to data.

Integralist

http://www.linux.com/community/blogs/133-general-linux/742528-pki-implementation-for-the-linux-admin

Public-key infrastructure (PKI) is what makes internet encryption and digital signatures work. When you visit your bank website you are told it is encrypted and verified.

How PKI Works

Most have heard the names of Verisign, Network Solutions, and GoDaddy. These companies along with many more are in the business of allowing the public to trust an organization's encryption keys and are referred to as Registration Authorities (RA)

If an organization, let’s say your bank, wants to encrypt their website that you use to manage your accounts they would first need to generate a private encryption key. The private key is something that should remain just that; private. With the private key one can extract a public key. While a public key can be created from a private key, the reverse should not be possible.

xem

codegolf JS

Mini projects by Maxime Euzière (xem), subzey, Martin Kleppe (aemkei), Mathieu Henri (p01), Litterallylara, Tommy Hodgins (innovati), Veu(beke), Anders Kaare, Keith Clark, Addy Osmani, bburky, rlauck, cmoreau, maettig, thiemowmde, ilesinge, adlq, solinca, xen_the,...

(For more info and other projects, visit http://xem.github.io)

(Official Slack room: http://jsgolf.club / join us on http://register.jsgolf.club)

akorn

#!/bin/zsh
#
# Copyright (c) 2014, 2020 by Dr. András Korn. Implements the basic idea of a similar script by Robert Coup (2013).
# License: GPLv3

function usage() {
	echo 'Usage:

rsync_parallel [--parallel=N] <args to find(1) to generate list of stuff to transfer> -- <args to rsync>
 

shamil

How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8

walkerjeffd

Configure Synology NAS as Git Server

Instructions for setting up a git server on a Synology NAS with Diskstation. Specifically, I am using a DS414 with DSM 5.0.

Set Up User and Folder

• Create user gituser via Diskstation interface (with File Station and WebDAV privilages)
• Add new shared folder called git (located at /volume1/git) with read/write access for gituser and admin. This folder will hold all the repos.
• Install Git Server package via Diskstation

lvous

//pure d3d aim 1.0
//simplified version 

#include <Windows.h>
#include <d3d9.h>
#include <d3dx9.h>
#pragma comment(lib, "d3d9.lib")
#pragma comment(lib, "d3dx9.lib")
//#include "detours/detours.h"	//detours 1.5
#include "detours3/detours.h"	//detours 3.0 (google microsoft detours)