Vito Jeng vitojeng

Easy Scala Publication

The following describes how you can publish artifacts for any sbt project using the GitHub Package Registry and the sbt-github-packages plugin.

Step 1: Create a GitHub Token

In your GitHub account, go to Settings > Developer settings > Personal access tokens, then click on Generate new token (or click here). Fill in some sort of meaningful name (I chose Dev) and click on the write:packages checkbox:

If you want to learn Scala, I’d suggest:

Install IntelliJ + Scala Plugin
Don’t do the Coursera courses yet.
Don’t do the “red book” Functional Programming in Scala yet.
Do: http://underscore.io/books/
- Essential Scala
- Essential Play
- Essential Slick
Do Scala for the Impatient: https://www.amazon.com/Scala-Impatient-Cay-S-Horstmann/dp/0321774094
The Neophyte’s Guide to Scala http://danielwestheide.com/scala/neophytes.html

Gmail and GitHub

How to filter emails from GitHub in Gmail and flag them with labels.

The labels in this document are just examples.

Pull Request

Filter	Label

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

README

Create a template service file at /etc/systemd/system/[email protected]. The template parameter will correspond to the name of target host:

[Unit]
Description=Setup a secure tunnel to %I
After=network.target

Jump to: Diff , Log

Syncing a fork

$ gradle -q dependencies --configuration compile

published

[Scala In Depth] Scala Case Classes

這篇同步發佈在我的Blog和Gist。

這篇文章，基本上是參考這篇Scala Case Classes In Depth來寫的，閱讀吸收後以我的例子與描述方式以中文寫下。

Category theory(範疇論)之什麼是Functor, Applicative, Monad, Semigroup, Monoid?

之前曾經寫過一篇什麼是Monad? ，裡面提到了對於Monad的解釋，而今天進一步解釋這些在Functional Programming中常見到的詞：Functor, Applicative, Monad, Semigroup, Monoid。透過放在一起比較，讓我們更清楚這些之間的差別與關係。

##Functor

在提到Functor之前，請先了解一下scala中map的作用，map可以讓你傳入一個function，而透過這個function是可以從F[A]轉換成F[B]，這裡的F不管他(就是代表外面的包裝不會變)，而裡面的A型態轉成B型態。

例如：

	#!/usr/bin/env bash
	#
	# Author: Stefan Buck
	# License: MIT
	# https://gist.github.com/stefanbuck/ce788fee19ab6eb0b4447a85fc99f447
	#
	#
	# This script accepts the following parameters:
	#
	# * owner