Marcin Cylke zygm0nt

Interdisciplinary Open Source Community Conferences

Criteria

Must be an event that someone involved in open source would be interested in attending
Must be a community oriented event (no corporate owned for-profit events here please)
Can't be about a specific language/framework.

Leave suggestions in the comments below

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results

303 See Other

Location: https://github.com/wsargent/docker-cheat-sheet

Hi there!

The docker cheat sheet has moved to a Github project under https://github.com/wsargent/docker-cheat-sheet.

Please click on the link above to go to the cheat sheet.

Introduction to Kafka

Kafka acts as a kind of write-ahead log (WAL) that records messages to a persistent store (disk) and allows subscribers to read and apply these changes to their own stores in a system appropriate time-frame.

Terminology:

Producers send messages to brokers
Consumers read messages from brokers
Messages are sent to a topic

	package bar.foo.lenses;

	import java.util.function.BiFunction;
	import java.util.function.Function;

	public class Lens<A, B> {

	private final Function<A, B> getter;
	private final BiFunction<A, B, A> setter;

	"""Plots a Pandas dataframe as a heatmap"""
	import matplotlib as mpl
	import matplotlib.pyplot as plt

	def heatmap(df,
	edgecolors='w',
	cmap=mpl.cm.RdBu,
	log=False,vmin=0,vmax=500):
	width = len(df.columns)/4
	height = len(df.index)/4

	#include <SoftwareSerial.h>

	#define CARD_CODE_LENGTH 10
	const int ledPin = 2;
	const int doorLock = 4;
	const int txPin = 6;
	const int rxPin = 8;

	int byteRead = 0;
	int bytesRead = 0;

	#!/usr/bin/env ruby
	require 'socket'

	# This script runs every minute, captures stats about redis
	# and forwards them to graphite as counter values.

	# Graphite/carbon settings
	GRAPHITE_HOST="graphite.intra.local.ch"
	GRAPHITE_PORT=8125

	import spark.streaming.{Seconds, StreamingContext}
	import spark.storage.StorageLevel
	import spark.streaming.examples.twitter.TwitterInputDStream
	import com.twitter.algebird._
	import spark.streaming.StreamingContext._
	import spark.SparkContext._

	/**
	* Example of using CountMinSketch monoid from Twitter's Algebird together with Spark Streaming's
	* TwitterInputDStream