phiggins

Scrabble Cheater

• I'd like you to help me cheat at Scrabble. I'd like you to write some code to give me all possible words that can be created given a set of tiles. The maximum number of tiles you can have in Scrabble is seven, so you'll need to find all of the words that can be made out of those tiles.

On most unix systems (including Mac OS X), you can find a word dictionary in "/usr/share/dict/words" - let's assume that all of these words (including "zymogenic"!) are up valid for scrabble. Feel free to use your own custom dictionary, but this will do for this purpose.

Here's sample code that reads in all of the words into an array, removes newlines, and downcases them.

words = File.readlines("/usr/share/dict/words").map(&:chomp).map(&:downcase)

gabrieltaylor

Postgres Cheatsheet

This is a collection of the most common commands I run while administering Postgres databases. The variables shown between the open and closed tags, "<" and ">", should be replaced with a name you choose. Postgres has multiple shortcut functions, starting with a forward slash, "". Any SQL command that is not a shortcut, must end with a semicolon, ";". You can use the keyboard UP and DOWN keys to scroll the history of previous commands you've run.

Setup

installation, Ubuntu

http://www.postgresql.org/download/linux/ubuntu/ https://help.ubuntu.com/community/PostgreSQL

stefanschmidt

chmod 0000 ~/Applications/Dropbox.app/Contents/Resources/*.tgz

mcasimir

module StaticMapHelper

  def static_map_for(location, options = {})
    params = {
      :center => [location.lat, location.lng].join(","),
      :zoom => 15,
      :size => "300x300",
      :markers => [location.lat, location.lng].join(","),
      :sensor => true
      }.merge(options)

gopperman

brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/aa049a47b218fda30f9a4a454119ae067a02cf50/Formula/postgis.rb

#pg_config --pkglibdir is useful for finding your $libdir
cp -a /usr/local/share/postgresql/extension/postgis* /usr/local/Cellar/postgresql@9.6/9.6.5/share/postgresql@9.6/extension/
cp -a /usr/local/lib/postgresql/postgis-2.3.so /usr/local/Cellar/postgresql@9.6/9.6.5/lib/postgis-2.3
cp -a /usr/local/lib/postgresql/rtpostgis-2.3.so /usr/local/Cellar/postgresql@9.6/9.6.5/lib/

chrismccord

Phoenix 1.4 ships with exciting new features, most notably with HTTP2 support, improved development experience with faster compile times, new error pages, and local SSL certificate generation. Additionally, our channel layer internals receiveced an overhaul, provided better structure and extensibility. We also shipped a new and improved Presence javascript API, as well as Elixir formatter integration for our routing and test DSLs.

This release requires few user-facing changes and should be a fast upgrade for those on Phoenix 1.3.x.

Install the new phx.new project generator

The mix phx.new archive can now be installed via hex, for a simpler, versioned installation experience.

To grab the new archive, simply run:

drj42

Org-mode Org-mode Reference Card

Org mode reference card

Created from the plain text reference card on orgmode.org Download this file, and open it in Emacs org-mode!

naholyr

Sample service script for debianoids

Look at LSB init scripts for more information.

Usage

Copy to /etc/init.d:

# replace "$YOUR_SERVICE_NAME" with your service's name (whenever it's not enough obvious)

bishboria

These links no longer work. Springer have pulled the free plug.

Graduate texts in mathematics

duplicates = multiple editions

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

MicahElliott

Setting up and installing rbenv, ruby-build, rubies, rbenv-gemset, and bundler

This guide enables you to install (ruby-build) and use (rbenv) multiple versions of ruby, isolate project gems (gemsets and/or bundler), and automatically use appropriate combinations of rubies and gems.

TL;DR Demo

# Ensure system is in ship-shape.

aptitude install git zsh libssl-dev zlib1g-dev libreadline-dev libyaml-dev