Serhii Yavnyi blacktaxi

Как метапрограмировать используя .Net на конференции #HotCode

Заранее убедиться:
- Что установлен .Net 4.5
- и/или Visual Studio 2012
- Опционально Roslyn CTP
Установить менеджер пакетов Chocolatey
- @powershell -NoProfile -ExecutionPolicy unrestricted -Command "iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))" && SET PATH=%PATH%;%systemdrive%\chocolatey\bin
Перезапустить консоль (cmd.exe), для обновления переменных среды
Установить ScriptCs используя Chocolatey

I have two user accounts set up on my mac. User drew I use for most things, but if I'm making a screencast I'll switch to the demo user. I know that the demo user has a clean desktop, and the font size is larger than usual in my terminal and text editors, making everything a bit more legible when capturing the screen. When I record a screencast as the demo user, I save the file to /Users/Shared/screencasts. As I understand it, the /Users/Shared directory is supposed to be accessible to all user accounts on the mac. If I created and saved a screenflow document as the demo user, I should be able to read and write that file when logged in as user drew.

That was the theory, but it didn't always work out that well in practice. I would occasionally find that a directory was only writable by one user or the other. Perhaps I'd open a screenflow document as user drew and attempt to export the video to the same directory, only to find that the directory was owned by demo, meaning that I couldn't cr

One of my favorite past times is to look at the notebooks of famous scientists. Da Vinci's notebook is well known, but there plenty others. Worshipping Da Vinci like no other, I bought a Think/Create/Record journal, used it mostly to keep jot down random thoughts and take notes. This was great in the beginning, but the conformity of lines drove me nuts. Only moleskines made blank notebooks, so I had to buy one.

At the same time I started a freelance project. The project itself is irrelevant, but suffice to say it was very complex and spanned several months. It seemed like a perfect opportunity to use the moleskine. Looking back, all my entries fell under few categories:

Todo
Question
Thought
Bug
Feature

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

	using System;
	using System.Collections.Generic;
	using System.Collections.Specialized;

	// As opposed to magic validation libraries that rely on reflection and attributes,
	// applicative validation is pure, total, composable, type-safe, works with immutable types, and it's easy to implement.

	public abstract class Result<T> {
	private Result() { }

	-- SpaceWar Elm by NOTtheMessiah (http://twitter.com/N0TtheMessiah)
	--
	-- Initial Commit
	-- Todo: cleanup, graphics, scoreboard, options, respawn delay
	--
	-- Player 1 uses wasd and shift
	-- Player 2 uses arrow keys and space

	import Keyboard
	import Window

	# put this in your .bash_profile
	if [ $ITERM_SESSION_ID ]; then
	export PROMPT_COMMAND='echo -ne "\033];${PWD##*/}\007"; ':"$PROMPT_COMMAND";
	fi

	# Piece-by-Piece Explanation:
	# the if condition makes sure we only screw with $PROMPT_COMMAND if we're in an iTerm environment
	# iTerm happens to give each session a unique $ITERM_SESSION_ID we can use, $ITERM_PROFILE is an option too
	# the $PROMPT_COMMAND environment variable is executed every time a command is run
	# see: ss64.com/bash/syntax-prompt.html

	----- Esc -----
	Quick change directory: Esc + c
	Quick change directory history: Esc + c and then Esc + h
	Quick change directory previous entry: Esc + c and then Esc + p
	Command line history: Esc + h
	Command line previous command: Esc + p
	View change: Esc + t (each time you do this shortcut a new directory view will appear)
	Print current working directory in command line: Esc + a
	Switch between background command line and MC: Ctrl + o
	Search/Go to directory in active panel: Esc + s / Ctrl + s then start typing directory name

	using System;
	using System.Collections;
	using System.Collections.Generic;

	/*
	A basic lens library for the purpose of demonstration.
	Implements a lens as the costate comonad coalgebra.

	This library is not complete.
	A more complete lens library would take from

	#!/bin/sh

	SERVER="http://localhost:8081"
	URL="$SERVER/nexus/service/local/artifact/maven/content"

	REPO="sandbox"
	USER="admin:admin123"

	group=$1
	artifact=$2