Timothy Perrett timperrett

Configuring SBT to use 1Password

Install swig-python
Use pip to install 1pass
Install py-levenshtein to avoid annoying warnings
Locate the nearest 1pass script (note: it may be behind you)
Test 1pass on a random password

Create ~/.sbt/0.13/plugins/build.sbt with the following contents:

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

	object tee {

	/**
	* Convert a `Tee` to a `Process1` by feeding the same input to both sides of the `Tee`.
	* Named after the 'diamond' shape this creates in the dataflow graph.
	*/
	def diamond[A,B](t: Tee[A,A,B]): Process1[A,B] = Process.suspend {
	// todo: there's a more complex impl that performs better when branches
	// have vastly different rates of processing
	val (hd, tl) = t.unemit

	http://d.stavrovski.net/blog/post/how-to-install-and-setup-oracle-java-jdk-in-centos-6

	# rpm
	wget --no-cookies \
	--no-check-certificate \
	--header "Cookie: oraclelicense=accept-securebackup-cookie" \
	"http://download.oracle.com/otn-pub/java/jdk/7u55-b13/jdk-7u55-linux-x64.rpm" \
	-O jdk-7-linux-x64.rpm

	# ubuntu

	# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help

	driftfile /var/lib/ntp/ntp.drift


	# Enable this if you want statistics to be logged.
	#statsdir /var/log/ntpstats/

	statistics loopstats peerstats clockstats
	filegen loopstats file loopstats type day enable

	/*
	Copyright 2018 Viktor Klang

	Licensed under the Apache License, Version 2.0 (the "License");
	you may not use this file except in compliance with the License.
	You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing, software

	case class Dog(name: String, tailLength: Option[Int])

	val dogs = Seq(Dog("Sparky", Some(85)), Dog("Rotty", None))
	val (dogsWithTails, dogsWithoutTails) = dogs.partition(_.tailLength.isDefined)

	if (! dogsWithoutTails.isEmpty)
	println("These dogs are missing tails: " +
	dogsWithoutTails.map(_.name).mkString(", "))

	dogsWithTails.map(dog => {

	import scalaz._, Scalaz._, effect._

	type Env = Map[String,String]
	type Error = String

	case class AppStack[A](f: Env => IO[Validation[Error,A]])

	object AppStack {
	implicit val appStackMonad = new Monad[AppStack] {
	def point[A](a: => A): AppStack[A] =

	{
	"cmd": ["/opt/scala/bin/scalac", "$file"],
	"file_regex": "^(\\S...?):([0-9]):?([0-9]*)",
	"selector": "source.scala"
	}