hmaurer

data

towards enlightenment

‘It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.’

hmaurer

My Awesome Sketch
  First State
    some event -> Second State
  Second State

hmaurer

My Awesome Sketch
  First State
    some event -> Second State
  Second State

hmaurer

# Unofficial brew formula for proxychains 4
# Instruction:
#   $ git clone git://gist.github.com/3792521.git gist-3792521
#   $ brew install --HEAD gist-3792521/proxychains4_formula.rb
#
# The default config file will be located in /usr/local/etc/proxychains.conf
#
require 'formula'

class Proxychains < Formula

hmaurer

> boot -d http-kit:2.2.0 -s ./ aot -n hello target

> cd ./target

... copy the clojure standard lib in clojure/

> java hello

Exception in thread "main" java.lang.ExceptionInInitializerError
	at java.base/java.lang.Class.forName0(Native Method)

hmaurer

;; # EMULATING DATOMIC EXCISION VIA MANUAL DATA MIGRATION


;; *************************************
;; ## Introduction
;; *************************************

;; This Gist demonstrates a generic way to migrate an entire Datomic database
;; from an existing 'Origin Connection' to a clean 'Destination Connection',
;; while getting rid of some undesirable data and otherwise preserving history.

hmaurer

CREATE EXTENSION btree_gist;

CREATE TABLE room_reservations (
    room_id integer,
    reserved_at timestamptz,
    reserved_until timestamptz,
    canceled boolean DEFAULT false,
    EXCLUDE USING gist (
        room_id WITH =, tstzrange(reserved_at, reserved_until) WITH &&
    ) WHERE (not canceled)

hmaurer

(defn compose-cycles [cycle-a cycle-b]
  (let [inv-cycle-a (clojure.set/map-invert cycle-a)]
    (reduce-kv
      (fn [acc k v]
        (cond
          (contains? inv-cycle-a k) (assoc acc (get inv-cycle-a k) v)
          (contains? cycle-a k) acc
          :else (assoc acc k v)))
      cycle-a
      cycle-b)))  

hmaurer

Base installations

sudo apt-get install blueman build-essentials calcurse chromium-browser cpufrequtils gnupg2 gparted hfsprogs imagemagick linux-tools-common lxappearance mplayer rtorrent ruby skype ubuntu-restricted-essentials urlview vagrant vim xclip

System Configurations

Lastpass

hmaurer

{
  object(rid: "2450090569620309683") {
    id
    children {
      rid
      name
      children {
        id
      }
    }