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https://overpass-turbo.eu/

# Punkte mit "railway:ref" (= Code / RIL100) und einem Operator und Operator enthält (regex) "DB"

node
  ["railway:ref"]
  ["operator"]
  ["operator" ~ "DB"]
  ({{bbox}});
out;

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MIDI 1.0 Specification Message Summary

Status / D7—​D0	Data Byte(s) / D7—​D0	Description
Channel Voice Messages [nnnn = 0-15 (MIDI Channel Number 1-16)]

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# https://pythonprogramming.net/haar-cascade-face-eye-detection-python-opencv-tutorial/

import numpy as np
import cv2

# multiple cascades: https://github.com/Itseez/opencv/tree/master/data/haarcascades

#https://github.com/Itseez/opencv/blob/master/data/haarcascades/haarcascade_frontalface_default.xml
face_cascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml')
#https://github.com/Itseez/opencv/blob/master/data/haarcascades/haarcascade_eye.xml

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module Hinweise exposing (..)

import Browser
import Html
import Time


type Msg
    = TickMsg Time.Posix

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Some notes about reading SSH-Keys in Erlang and using them

Converting SSH-Key to PEM

$ ssh-keygen -e -m pem -f .ssh/MYKEY.pub > /tmp/MYKEY.pub.pem

Reading public Key in Erlang

{ok, C} = file:read_file("/tmp/cloud.pub.pem"). > public_key:pem_decode(C).

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Languages in the BEAM

• Erlang
• Elixir
• LFE
• Prolog
• Lua
• Joxa
• Efene
• Clojerl

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FROM alpine:3.8

ARG BUILD_DATE
ARG VCS_REF
ARG VERSION

LABEL \
    maintainer="ratopi" \
    org.label-schema.build-date=$BUILD_DATE \
    org.label-schema.docker.dockerfile="/Dockerfile" \

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ELM327

Bluetooth

ID is OBDII PW is 1234 or 0000 or 6789

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Import JPEGs

File:

JPEGLIST 
<fps>
<width>
<height>
<file / absolute path>

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Erlang Libs

JSON

JSON Parsing & Formatting

• https://github.com/sile/jsone
• https://github.com/mcandre/erlang-json
• https://github.com/jchris/erlang-json-eep-parser/tree/master
• https://github.com/talentdeficit/json