t3hk0d3

#!/bin/sh -e

# Delete all stopped containers (including data-only containers).
docker ps -a -q --no-trunc --filter "status=exited" | xargs --no-run-if-empty docker rm -v

# Delete all tagged images more than a month old
# (will fail to remove images still used).
docker images --no-trunc --format '{{.ID}} {{.CreatedSince}}' | grep ' months' | awk '{ print $1 }' | xargs --no-run-if-empty docker rmi || true

# Delete all 'untagged/dangling' (<none>) images

danni

from django import forms
from django.contrib.postgres.fields import ArrayField


class ChoiceArrayField(ArrayField):
    """
    A field that allows us to store an array of choices.
    
    Uses Django 1.9's postgres ArrayField
    and a MultipleChoiceField for its formfield.

dteoh

users = User.arel_table
query = users.project(users[Arel.star])

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

latkin

type Spell = 
    { Name : string
      Cost : int
      Damage : int
      Heal : int
      Armor : int
      Mana : int
      Duration : int }

let allSpells = 

jamtur01

These are the Kickstarter Engineering and Data role definitions for both teams.

Technical	Data	People
Junior Software Engineer
Software Engineer	Data Analyst
Senior Software Engineer	Data Scientist	Engineering Manager
Staff Engineer	VP of Data	Engineering Director
Principal Engineer		CTO

geoff-nixon

#!/usr/bin/sudo sh

## ruby_revealer.sh -- decrypt obfuscated GHE .rb files. 2.0.0 to 2.3.1+.

## From `strings ruby_concealer.so`:
##
## > This obfuscation is intended to discourage GitHub Enterprise customers
## > from making modifications to the VM.
##
## Well, good, as long as its not intended to discourage *me* from doing this!

laughinghan

Interface Versioning (InterVer)

Never break backcompat, keep the API nimble

An extension of SemVer with a stricter (yet more realistic) backcompat guarantee, that provides more flexibility to change the API, for libraries that are packaged and downloaded (not services accessed remotely over the Internet (see Note 4)).

taylorhughes

# tested with celery[redis]==3.1.17

# to run with default configuration -- tasks will take 14 seconds to complete the 20 tasks in start_all() below

celery worker -A cluster_project.celery_app -Q tester -lINFO --concurrency=4

# to run with -Ofair -- tasks will take 10 seconds to complete

celery worker -A cluster_project.celery_app -Q tester -lINFO --concurrency=4 -Ofair

tevino

#!/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"