martinlechner1

Creating a Happy Git Environment on OS X

Step 1: Install Git

brew install git bash-completion

Configure things:

git config --global user.name "Your Name"

git config --global user.email "you@example.com"

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convertRecordsTask : Task Http.Error (List (List String)) -> Task Http.Error (List TrajectoryPoint)
convertRecordsTask task =
    Task.map convertRecords task


convertRecords : List (List String) -> List TrajectoryPoint
convertRecords records =
    List.take 10000 records
        |> List.map convertRecord

martinlechner1

Scala FP Material

Books

• Redbook
• Advanced Scala with Cats
• Functional Programming for Mortals

Blog Posts

martinlechner1

#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
#include <ArduinoJson.h>
 
const char* SSID = "ssid";
const char* PSK = "wifi key";
const char* MQTT_BROKER = "mqtt ip";

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private def buildTransactor(c: Connection): Resource[IO, Transactor[IO]] = 
  Blocker[IO].map { b =>
   Transactor.fromConnection[IO](c, b)
  }

private def prestoTransactor(): Resource[IO, Transactor[IO]] =
 Resource.fromAutoCloseable[IO, Connection] {
   IO.fromTry(Try {
     val url = "jdbc:presto://your-presto-jdbc-url"
     val properties = new Properties()

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prestoTransactor().use { xa => queryProgram(xa) }.unsafeRunSync()

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def queryProgram(xa: Transactor[IO]) =
sql"""SELECT your_fields FROM your_table"""
 .query[YourModel]
 .stream
 .transact(xa)
 .evalMap(d => IO(println(d)))
 .compile
 .drain

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docker system prune -a --volumes

curl cheat.sh/curl

martinlechner1

# ZIO usage

## ZLayer for dependency management

- Type safe
- Composable
- No Magic / No reflection (unlike Guice)
- Support for modeling failing dependencies (such as config loading)

## Module pattern