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@ryanpitts
ryanpitts / gist:1304725
Created October 21, 2011 19:34
GROUP BY and Select MAX from each group in Django, 2 queries
'''
given a Model with:
category = models.CharField(max_length=32, choices=CATEGORY_CHOICES)
pubdate = models.DateTimeField(default=datetime.now)
<other fields>
Fetch the item from each category with the latest pubdate.
'''
@CristinaSolana
CristinaSolana / gist:1885435
Created February 22, 2012 14:56
Keeping a fork up to date

1. Clone your fork:

git clone git@github.com:YOUR-USERNAME/YOUR-FORKED-REPO.git

2. Add remote from original repository in your forked repository:

cd into/cloned/fork-repo
git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream
@mattetti
mattetti / gist:3798173
Last active August 21, 2024 05:26
async fetching of urls using goroutines and channels
package main
import (
"fmt"
"net/http"
"time"
)
var urls = []string{
"https://splice.com/",
@radu-gheorghe
radu-gheorghe / traffic.sh
Created November 16, 2012 14:24
bash script for checking out traffic via /proc/net/dev
#!/bin/bash
#shows traffic on the specified device
function human_readable {
VALUE=$1
BIGGIFIERS=( B K M G )
CURRENT_BIGGIFIER=0
while [ $VALUE -gt 10000 ] ;do
VALUE=$(($VALUE/1000))
@rxaviers
rxaviers / gist:7360908
Last active September 8, 2024 02:42
Complete list of github markdown emoji markup

People

:bowtie: :bowtie: 😄 :smile: 😆 :laughing:
😊 :blush: 😃 :smiley: ☺️ :relaxed:
😏 :smirk: 😍 :heart_eyes: 😘 :kissing_heart:
😚 :kissing_closed_eyes: 😳 :flushed: 😌 :relieved:
😆 :satisfied: 😁 :grin: 😉 :wink:
😜 :stuck_out_tongue_winking_eye: 😝 :stuck_out_tongue_closed_eyes: 😀 :grinning:
😗 :kissing: 😙 :kissing_smiling_eyes: 😛 :stuck_out_tongue:
@lgoldstien
lgoldstien / workspace-loader.sh
Last active August 19, 2020 16:10
A simple script to load workspace specific environment variables and the like.
#!/bin/bash
function workspace_cd() {
cd $@ && [ -f ".workspace" ] && source .workspace
}
alias cd="workspace_cd"
@johnpolacek
johnpolacek / .gitconfig
Last active September 4, 2024 15:49
My current .gitconfig aliases
[alias]
co = checkout
cob = checkout -b
coo = !git fetch && git checkout
br = branch
brd = branch -d
brD = branch -D
merged = branch --merged
st = status
aa = add -A .
@gubatron
gubatron / dht-walkthrough.md
Last active June 24, 2024 01:05
DHT walkthrough notes

DHT Walkthrough Notes

I've put together these notes as I read about DHT's in depth and then learned how the libtorrent implementation based on the Kademlia paper actually works.

What problem does this solve?

400,000,000,000 (400 billion stars), that's a 4 followed by 11 zeros. The number of atoms in the universe is estimated to be around 10^82. A DHT with keys of 160 bits, can have 2^160 possible numbers, which is around 10^48

@leonjza
leonjza / cache.py
Last active July 14, 2024 11:49
Simple SQLite Cache
#!/usr/bin/python
import os
import errno
import sqlite3
import sys
from time import time
from cPickle import loads, dumps
import logging
@fliedonion
fliedonion / !GIST file list order - summary.md
Last active July 30, 2024 09:03
Understand GIST file list order.
Summary How to control (or Understand) your GIST page's files list order.
Notice not official documentation.