missingfaktor

Write a program that does what it’s supposed to do
Write idiomatic code
Debug a program that you wrote
Debug a program someone else wrote
Debug the interaction between a system you wrote and one you didn’t
File a good bug report
Modify a program you didn’t write
Test a program you wrote
Test a program you didn’t write
Learn a new programming language

missingfaktor

scala> case class Callback[A](f: (A => Unit) => Unit) {
     |   def map[B](g: A => B): Callback[B] = Callback { (h: B => Unit) => f(a => h(g(a)))  }
     |   def flatMap[B](g: A => Callback[B]): Callback[B] = Callback { (h: B => Unit) => f(a => g(a).f(b => h(b))) }
     | }
defined class Callback

missingfaktor

// 6,046 bytes jarred.
/*
Copyright 2012 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

missingfaktor

#!/usr/bin/env ruby
#
# Convert blogger (blogspot) posts to jekyll posts
#
# Basic Usage
# -----------
#
#   ./blogger_to_jekyll.rb feed_url
#
#  where `feed_url` can have the following format:

missingfaktor

#!/usr/bin/env ruby
#
# Convert blogger (blogspot) posts to jekyll posts
#
# Basic Usage
# -----------
#
#   ./blogger_to_jekyll.rb feed_url
#
#  where `feed_url` can have the following format:

missingfaktor

import java.time.{LocalDateTime, ZoneId}

import com.amazonaws.auth.{AWSCredentialsProvider, BasicAWSCredentials, InstanceProfileCredentialsProvider}
import com.amazonaws.internal.StaticCredentialsProvider
import com.amazonaws.util.IOUtils
import com.sksamuel.elastic4s.ElasticsearchClientUri
import com.sksamuel.elastic4s.http.{HttpClient, NoOpRequestConfigCallback}
import io.ticofab.AwsSigner
import org.apache.http.client.methods.HttpRequestWrapper
import org.apache.http.impl.nio.client.HttpAsyncClientBuilder

missingfaktor

#Delete local tags.
git tag -l | xargs git tag -d
#Fetch remote tags.
git fetch
#Delete remote tags.
git tag -l | xargs -n 1 git push --delete origin
#Delete local tasg.
git tag -l | xargs git tag -d

missingfaktor

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

missingfaktor

#!/usr/bin/env bash
#
# Script that detects if Scala's SBT is installed and if
# not then it automatically downloads and installs it at
# a specified path.
#
# Author: Alexandru Nedelcu (https://alexn.org)
#

set -e

missingfaktor

Zebu https://github.com/modernserf/zebu

Constraints - Crista Lopes tagide.com/blog/research/constraints

Little Languages - Jon Bentley staff.um.edu.mt/afra1/seminar/little-languages.pdf

Purpose-Built Languages - Mike Shapiro