cvogt

#!/usr/bin/env ruby

body = STDIN.read

body.gsub!(/\{\{\{([^\n]+?)\}\}\}/, '`\1`')
body.gsub!(/\{\{\{(.+?)\}\}\}/m){|m| m.each_line.map{|x| "\t#{x}".gsub(/[\{\}]{3}/,'')}.join}
body.gsub!(/\=\=\=\=\s(.+?)\s\=\=\=\=/, '### \1')
body.gsub!(/\=\=\=\s(.+?)\s\=\=\=/, '## \1')
body.gsub!(/\=\=\s(.+?)\s\=\=/, '# \1')
body.gsub!(/\=\s(.+?)\s\=[\s\n]*/, '')

cvogt

import scala.slick.lifted.CanBeQueryCondition
// optionally filter on a column with a supplied predicate
case class MaybeFilter[X, Y](val query: scala.slick.lifted.Query[X, Y]) {
  def filter[T,R:CanBeQueryCondition](data: Option[T])(f: T => X => R) = {
    data.map(v => MaybeFilter(query.filter(f(v)))).getOrElse(this)
  }
}

// example use case
import java.sql.Date

cvogt

package slick

/**
 * This is some code extracted from TimeOut codebase, demonstrating:
 * - Use of tag typed to avoid mixing session of different DB
 * - The use of the Reader Monad to compose Actions together and defer the choice of async/sync computation
 *
 * I remove the part where we can say if our operation are read only or not (to use different connection), in order to
 * make things easier.
 **/

cvogt

brew update
brew versions FORMULA
cd `brew --prefix`
git checkout HASH Library/Formula/FORMULA.rb  # use output of "brew versions"
brew install FORMULA
brew switch FORMULA VERSION
git checkout -- Library/Formula/FORMULA.rb    # reset formula

## Example: Using Subversion 1.6.17
#

cvogt

package com.sport195.api

import play.api.libs.json._
import scala.language.experimental.macros

object ImplicitConversions {
  import java.sql.Timestamp
  import java.sql.Date

  implicit val x = scala.language.implicitConversions

cvogt

import Predef.{any2stringadd => _,_}

// GUESS THE INFERRED TYPE FOR ys!
class :=[T,Q]
object := {
  /** Ignore default */
  implicit def useProvided[P, D] : P := D = new (P := D)
  /** Infer type argument to default */
  implicit def useDefault[D] : D := D = new (D := D)
}

cvogt

import org.specs2._
import execute._
import specification._
import core._

class TestSuite(tests: Fragment*) extends Specification {
  def is = br ^ Fragments.foreach(tests)(f => Fragments(f, br))
}

object TestSuite {

cvogt

This re-styles your sublime text sidebar to be dark, it fits default Monokai theme.

Save the Default.sublime-theme file into packages/Theme - Default, make a backup of your original if you want to be able to go back easily.

Based on:

• https://gist.github.com/olivierlacan/1857652
• https://gist.github.com/larrybotha/2935636

cvogt

% sbtx dependencyGraph
... blah blah ...
[info] *** Welcome to the sbt build definition for Scala! ***
[info] Check README.md for more information.
[error] Not a valid command: dependencyGraph
[error] Not a valid project ID: dependencyGraph


% sbtx -Dplugins=graph dependencyGraph
... blah blah ...

cvogt

Getting Started in Scala

This is my attempt to give Scala newcomers a quick-and-easy rundown to the prerequisite steps they need to a) try Scala, and b) get a standard project up and running on their machine. I'm not going to talk about the language at all; there are plenty of better resources a google search away. This is just focused on the prerequisite tooling and machine setup. I will not be assuming you have any background in JVM languages. So if you're coming from Python, Ruby, JavaScript, Haskell, or anywhere…  I hope to present the information you need without assuming anything.

Disclaimer It has been over a decade since I was new to Scala, and when I was new to Scala, I was coming from a Java and Ruby background. This has probably caused me to unknowingly make some assumptions. Please feel free to call me out in comments/tweets!

One assumption I'm knowingly making is that you're on a Unix-like platform. Sorry, Windows users.

Getting the JVM