Oscar Rendon orendon

ScaleConfCo 2017

Workshops

Google Cloud and Terraform
Create your first descentralized application with Ethereum
Cloud native for beginners
Deep Learning Escalable con Tensorflow
Starting with Apache Kafka
Deploying Microservices to the Cloud

Hi! Today I'll walk you through Lucene search engine syntax to make the best use of clojars website.

We can see a search query as a bunch of terms and operators, let's explore several ways to use our search engine:

Terms

There are 2 types of terms:

A term is a single word such as oauth or sql
A phrase is just a bunch of words grouped by quotes, like "sql builder"

Boolean operators

Advanced Functional Programming with Scala - Notes

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x

(my response to https://twitter.com/apotonick/status/717105889845624832)

I haven't yet came across readily available resources for large-scale application architecture for Elixir apps. I found Programming Phoenix to be a good start for that though. And there's ~30 years of knowledge in the Erlang land :)

For web apps, I found the abstractions that Elixir/Phoenix provides to be really helpful. Indeed, the list below is somewhat ORM focused.

In the small, Ecto.Schema, Ecto.Query, Ecto.Changeset, and Phoenix.View allow me to build highly composable and side-effect free modules. I can have many schemas, changesets and queries all interacting with the same underlying DB table(s) if I want to. Most of the side-effects (through Ecto.Repo for DBs) are usually in the Phoenix.Controller (or other Plugs).

	(ns x.y
	(:use [plumbing.core]) ;; Just for the map-vals
	(:require [clojure.walk :refer [postwalk prewalk prewalk-demo postwalk-demo]]
	[clojure.core.match :refer [match]]
	[schema.utils :refer [named-error-explain validation-error-explain]]
	[schema.core :as s])
	(:import (schema.utils NamedError ValidationError)))

	;; Partially FROM:
	;; https://github.com/puppetlabs/clj-schema-tools

	(defn permutations [s]
	(lazy-seq
	(if (seq (rest s))
	(apply concat (for [x s]
	(map #(cons x %) (permutations (remove #{x} s)))))
	[s])))

	(defn cost [proposoals s]
	{:permutation s
	:cost (apply + (map-indexed (fn [project candidate-str]

	#!/usr/bin/env bash
	#
	# Copy env variables to app module gradle properties file
	#

	set +x // dont print the next lines on run script
	echo $(printenv) \| tr ' ' '\n' > app/gradle.properties
	set -x

	#include <WiFi.h>
	#include <WiFiClient.h>
	#include <WiFiServer.h>
	#include <WiFiUdp.h>

	#include <SPI.h>


	char ssid[] = "NULL_INDUS"; // your network SSID (name)
	char pass[] = "90046686"; // your network password


	# https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/3/html/Security_Guide/s1-server-ports.html

	# sample target port 834

	nmap -sT -O localhost
	cat /etc/services \| grep 834
	netstat -anp \| grep 834
	lsof -i \| grep 834

	# sd formatter and overwrite sd card
	# https://www.sdcard.org/downloads/formatter_4/eula_mac/
	# or gparted on linux

	diskutil list

	diskutil unmountDisk /dev/disk[2]

	sudo dd bs=1m if=~/Downloads/software/iot/2016-05-27-raspbian-jessie.img of=/dev/rdisk[2]