postspectacular

        .syntax unified
        .cpu cortex-m4
        .thumb
        .thumb_func

foo:
        ldr r0, =timer                  @ load address of label
        ldr r1, [r0, #4]                @ load word following bar ( => SysTick_VAL => 8 )
        ldr r0, [r0]			@ deref label addr => SysTick_BASE
        ldr r0, [r0, r1]		@ => val of [SysTick_BASE + SysTick_VAL]

postspectacular

ffmpeg -f image2 -i render-%04d.png -i audio.mp3 -r 25 -vcodec libx264 -b:v 1024k -b:a 192k -t 00:00:04 -vf "movie=watermark.png [watermark]; [in][watermark] overlay=10:10 [out]" out.mp4 

postspectacular

Download: http://sourceforge.net/projects/mecrisp/files/

cd mecrisp-stellaris-2.1.6/stm32f429
st-flash erase
st-flash write mecrisp-stellaris-stm32f429.bin 0x08000000

picocom -b 115200 /dev/tty.SLAB_USBtoUART --imap lfcrlf,crcrlf --omap delbs,crlf --send-cmd "ascii-xfr -s -l 200 -n"

postspectacular

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX sdef: <http://statistics.data.gov.uk/def/>
PREFIX sg: <http://statistics.data.gov.uk/def/statistical-geography#>
PREFIX sid: <http://statistics.data.gov.uk/id/statistical-geography/>

CONSTRUCT {
  ?item rdfs:label ?id ;
        sg:officialName ?name ;
        sg:hasExteriorLatLongPolygon ?poly .

postspectacular

(defn load-house-sales
  "Loads CSV property sales data from given path, extracts
  set of columns and transforms column values.
  Returns seq of maps, one per CSV row/record."
  [path]
  (mapped-csv
   path
   ;; CSV column fields to extract
   #{"transaction_id" "price" "date_processed"
     "post_code" "property_type" "borough_code"}

postspectacular

(->> {:x-axis (viz/linear-axis
               {:domain      [0 len]
                :range       [40 220]
                :major       100
                :minor       50
                :pos         100
                :label       (viz/default-svg-label int)
                :label-style {:style {:font-size "9px"}}
                :attribs     {:stroke-width "0.5px"}})
      :y-axis (viz/log-axis

postspectacular

;; query spec to compute aggregated heatmap data of all property sales per borough
{:prefixes  {"sg" "http://statistics.data.gov.uk/def/statistical-geography#"}
 :q         [{:where [[?s "rdf:type" "schema:SellAction"]
                      [?s "schema:price" ?price]
                      [?s "ws:onsID" ?boroughID]
                      [?borough "rdfs:label" ?boroughID]
                      [?borough "sg:officialName" ?name]
                      [?borough "sg:hasExteriorLatLongPolygon" ?poly]]}]
 :aggregate {?num   (agg-count ?s)
             ?avg   (agg-avg ?price)

postspectacular

git clone https://github.com/thi-ng/ws-ldn-2.git
cd ws-ldn-2
lein run

# open another terminal using same directory
lein fighweel dev

# once compilation is complete...
# open http://localhost:8000 in your browser

postspectacular

Instructions

The following instructions assume a debian jessie based distribution

0. Prerequisites

Install dependent tools and libraries

$ sudo apt-get update

postspectacular

(ns toxi.euler.problem59)

;; http://projecteuler.net/problem=59
;; solution by: toxi <k at postspectacular dot com>
;; 2012-12-23

(defn xor-decrypt
  "Applies bit-xor to all items in src using key as cyclic sequence."
  [src key] (map bit-xor src (cycle key)))