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# Prerequisit: ImageMagick installed
def file_exists?(filename)
`[ -f #{filename} ] && echo "Found" || echo "Not found"` == "Not found\n"
end
['landing'].each do |screengrab_file_name|
before = screengrab_file_name + '_before.png'
after = screengrab_file_name + '_after.png'
difference = screengrab_file_name + '_difference.png'
@tomstuart
tomstuart / gist:1466504
Created December 12, 2011 10:40
FizzBuzz in the lambda calculus in Ruby
>> IF = -> b { b }
=> #<Proc:0x007fb4e4049cc8 (lambda)>
>> LEFT = -> p { p[-> x { -> y { x } } ] }
=> #<Proc:0x007fb4e403d680 (lambda)>
>> RIGHT = -> p { p[-> x { -> y { y } } ] }
=> #<Proc:0x007fb4e4028ff0 (lambda)>
>> IS_EMPTY = LEFT
@zaius
zaius / background.sh
Created January 16, 2011 23:29
How to redirect a running process output to a file and log out
ctrl-z
bg
touch /tmp/stdout
touch /tmp/stderr
gdb -p $!
# In GDB
p dup2(open("/tmp/stdout", 1), 1)
p dup2(open("/tmp/stderr", 1), 2)
@telent
telent / gist:704274
Created November 17, 2010 22:46
Some random notes on Mirah, mostly culled from the mailing list

Stuff in Ruby that is/isn't supported, or is different

=begin / =end

Rib Rdb writes: "The new parser doesn't support this". Use single line comments instead

The object model

The ruby object model is not the same as the java object model. The

window.addEventListener "DOMContentLoaded", ->
body = $ "body"
canvas = $ "#canvas"
chalkboard = $ "#chalkboard"
close = $ "#close"
ledge = $ "#ledge"
lightswitch = $ "#lightswitch"
output = $ "#output"
shade = $ "#shade"
share = $ "#share"
require 'sj'
run SinatraJekyll
/*
The MIT License (MIT)
Copyright (c) 2014 Ismael Celis
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is