jeffkreeftmeijer

class Foo         
  def foo
    puts "ok!"
  end 
end 
 
Foo.prepend(Module.new do
  def foo
    puts "prepend!"
    super

jeffkreeftmeijer

Terminal colors with ANSI escape sequences

Terminal emulators use ANSI escape sequences to --amongst other things like controlling the cursor’s position-- read the desired text and background color when printing output.

$ echo -e "\033[31mred\033[m" # Prints "red" in red.

While most terminal emulators, including Apple’s Terminal.app, support true color now, most utilities use one of the main sixteen colors (black, red, green, yellow, blue, magenta, cyan, white, and a high intensity or bright version of each). For example, git shows diffs with additions in green and deletions in red, and most testing frameworks print green dots and red "F"s for failures.

jeffkreeftmeijer

Rails with mssql on macOS

Start mssql in docker

docker pull microsoft/mssql-server-linux:2017-latest
docker run -e 'ACCEPT_EULA=Y' -e 'MSSQL_SA_PASSWORD=B4n44n123' -p 1401:1433 --name sql1 -d microsoft/mssql-server-linux:2017-latest
docker ps -a

jeffkreeftmeijer

<ul>
  <li>
    <article>
      <time datetime="2017-10-17">2017-10-17</time>
      <span><a href="/vim-reformat-dates/">Find, convert and replace dates with Vim substitutions</a></span>
    </article>
  </li>
  <li>
    <article>
      <time datetime="2017-09-19">2017-09-19</time>

jeffkreeftmeijer

defmodule Math do
  @spec square(integer) :: integer
  def square(a) do
    a * a
  end
end

jeffkreeftmeijer

Roast potatoes

Potatoes

• Salt
• 1/2 teaspoon baking soda (~4g)
• Potatoes

Boil for ~10 minutes

jeffkreeftmeijer

Property-based testing in Elixir using PropEr

jeffkreeftmeijer

# Use Ctrl-a instead of Ctrl-b as the tmux prefix
set-option -g prefix C-a

# Set the base index to 1 instead of 0 for both windows and panes.
set-option -g base-index 1
set-option -g pane-base-index 1

# Use vim keybindings in copy mode
setw -g mode-keys vi

jeffkreeftmeijer

enough.css

enough.css is a tiny CSS style sheet with most of the styling you'll need for that blog of yours. It moved to https://github.com/jeffkreeftmeijer/enough.css

jeffkreeftmeijer

require 'socket'
require 'rack'
require 'rack/lobster'

app = Rack::Lobster.new
server = TCPServer.new 5678

while session = server.accept
  request = session.gets
  puts request