lelandbatey

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results

pascalpoitras

This configuration is no longer updated

dconnolly

All updates now moved over to https://github.com/dconnolly/Chromecast-Backgrounds

whylom

# example class
class State < Struct.new(:name, :code)
  def self.all
    [
      State.new('Alabama', 'AL'),
      State.new('Alaska',  'AK'),
      State.new('Arizona', 'AZ')
    ]
  end
end

marianposaceanu

RVM Alternatives

We have two tiers of RVM alternatives :

tier 1

Here we have the inception of the minimalistic, one thing and do it well tool with no magic, following the UNIX philosophy.

Use rbenv to pick a Ruby version for your application and guarantee that your development environment matches production. Put rbenv to work with Bundler for painless Ruby upgrades and bulletproof deployments. [0]

whylom

This is a Ruby script that enhances the standard git branch listing by organizing and color coding remotes (origin, root, etc).

• Branches whose remote is origin (the default) are listed at the top.
• Branches whose remote is not origin are listed next, with the remote displayed in magenta. This makes it easier to see branches that are shared with other developers.
• A hardcoded list of staging branches are displayed at the bottom in gold.

toddwschneider

# you can make a text file of request times (in ms, one number per line) and import it here, or you can use a probability distribution to simulate request times (see below where setting req_durations_in_ms)
# rq = read.table("~/Downloads/request_times.txt", header=FALSE)$V1

# argument notes:
# parallel_router_count is only relevant if router_mode is set to "intelligent"
# choice_of_two, power_of_two, and unicorn_workers_per_dyno are only relevant if router_mode is set to "naive"
# you can only select one of choice_of_two, power_of_two, and unicorn_workers_per_dyno

run_simulation = function(router_mode = "naive",
                          reqs_per_minute = 9000,

rf-

#!/usr/bin/env ruby

# grd: micro Guard.
#
# Watch one or more filename patterns and then run the given command every time
# something changes.
#
# Example:
#   grd my_model "rspec spec/models/my_model_spec.rb"

arvearve

Mathematics: What do grad students in math do all day?

by Yasha Berchenko-Kogan

A lot of math grad school is reading books and papers and trying to understand what's going on. The difficulty is that reading math is not like reading a mystery thriller, and it's not even like reading a history book or a New York Times article.

The main issue is that, by the time you get to the frontiers of math, the words to describe the concepts don't really exist yet. Communicating these ideas is a bit like trying to explain a vacuum cleaner to someone who has never seen one, except you're only allowed to use words that are four letters long or shorter.

What can you say?

alexspeller

# config/initializers/source_maps.rb

if Rails.env.development?
  require 'open3'
  module CoffeeScript
    class SourceMapError < StandardError; end;
  
    class << self
    
      def map_dir