brainopia

def bash_escape(argument)
  "$'" + argument.gsub("\\'", '\\\\\&').gsub("'", "\\\\'") + "'"
end

ruby_code = "puts 'something'"
command = "ruby -e #{bash_escape ruby_code}"
puts "ssh server #{bash_escape command}" # => ssh server $'ruby -e $\'puts \\\'something\\\'\''

teeparham

# for some reason active record doesn't include a simple way to serialize to
# cache.  this simple trick will take you far
#
# usage: 
# 
#   user = User.find(id)
#
#   key = user.to_cache
#
#   user = User.from_cache(key)

netzpirat

module ActiveRecord

  # Allows embedding of ActiveRecord models.
  #
  # Embedding other ActiveRecord models is a composition of the two
  # and leads to the following behaviour:
  #
  # - Nested attributes are accepted on the parent without the _attributes suffix
  # - Mass assignment security allows the embedded attributes
  # - Embedded models are destroyed with the parent when not appearing in an update again

JosephPecoraro

# Ways to execute a shell script in Ruby
# Example Script - Joseph Pecoraro

cmd = "echo 'hi'" # Sample string that can be used

# 1. Kernel#` - commonly called backticks - `cmd` 
# This is like many other languages, including bash, PHP, and Perl
#   Synchronous (blocking)
#   Returns the output of the shell command
#   Docs: http://ruby-doc.org/core/classes/Kernel.html#M001111