aprescott

## alias_method_is_not_def.rb
# Demonstration showing that
#
#   alias_method :bar, :foo
#
# is not equivalent to
#
#   def bar
#     foo
#   end

## gist:9353408
# Collect _spec.rb and .feature files under spec/ that are relevant to current work, one per line. Good for pipes.
#
#   1. Modified, staged git files.
#   2. Modified, unstaged git files.
#   3. Changes in any commits since master.
#   4. New, untracked files.
#
#   $ specs | xargs rspec

cat <(git diff --name-only) <(git diff --staged --name-only) <(git diff master..@ --name-only) <(git ls-files --others --exclude-standard) | uniq | grep -e "^spec/" | grep -E "_spec\.rb$|\.feature$"

## delay_method.rb
# Delay Foo#method by 1 second before
# executing its original implementation.
def delay_method(klass, method)
  sleeping_giant = Module.new do
    define_method(method) do |*args, &block|
      sleep 1
      super(*args, &block)
    end
  end

## unix.rb
class Symbol
  def |(other)
    self.to_proc | other
  end
end

class Proc
  def |(other)
    proc { |arg| other.to_proc.call(self.call(arg)) }
  end

## gist:1705d11ac5091a447311
function prodssh { osascript -e 'tell application "Terminal" to set current settings of selected tab of window 1 to settings set "Red Sands"' && ssh "$@"; }

# prodssh yourserver

## proc_equality_1.8.7.rb
#
# 1.8.7 docs: http://ruby-doc.org/core-1.8.7/classes/Proc.html#M000463
#
# Return true if prc is the same object as other_proc, or if they are both procs with the same body.
#

RUBY_DESCRIPTION #=> ruby 1.8.7 (2011-02-18 patchlevel 334) [i686-linux]

proc { 1 }     == proc { 1 }      # => false
proc { 1 + 1 } == proc { 1 + 1 }  # => false

## local_variable_references.rb
>> local_variables
=> ["_"]
>> a = ""
=> ""
>> local_variables
=> ["_", "a"]
>> b = binding; local_variables.select { |var| b.eval(var).object_id == a.object_id }
=> ["a"]
>> x = a
=> ""

## pdf_bombs.html
<!-- See it in action: http://jsfiddle.net/eVAg4/1/ -->

<!doctype html>
<head>
    <meta charset="UTF-8">
    <title>PDF link file sizes in CSS</title>
    <style type="text/css">
        a[href$=".pdf"]::after { content: " (PDF)"; }
        a[href$=".pdf"][data-size]::after { content: " (PDF, " attr(data-size) ")"; }
    </style>

## gist:960903
def foo(n, m)
  return n if n % m == 0
  n + m - (n % m)
end

foo(25, 7) #=> 28
foo(28, 7) #=> 28
foo(29, 7) #=> 35

# No branching.

## fullwidther.rb
# it turns out that "Ａ".ord - "A".ord is constant when you replace the two characters
# with, say "Ｂ" and "B", so ("B".ord + DIFFERENCE).to_s(16) == "ff22" and "\uff22"
# is "Ｂ". (Thanks, Unicode consortium.)
#
# an exception is U+0020 space, which has IDEOGRAPHIC SPACE U+3000, but the two don't
# differ by DIFFERENCE == 65248 == 0xfee0, so you have to replace 20+65248 == 0xff00
# with 0x3000.

DIFFERENCE = 65248
	# Demonstration showing that
	#
	# alias_method :bar, :foo
	#
	# is not equivalent to
	#
	# def bar
	# foo
	# end
	# Collect _spec.rb and .feature files under spec/ that are relevant to current work, one per line. Good for pipes.
	#
	# 1. Modified, staged git files.
	# 2. Modified, unstaged git files.
	# 3. Changes in any commits since master.
	# 4. New, untracked files.
	#
	# $ specs \| xargs rspec

	cat <(git diff --name-only) <(git diff --staged --name-only) <(git diff master..@ --name-only) <(git ls-files --others --exclude-standard) \| uniq \| grep -e "^spec/" \| grep -E "_spec\.rb$\|\.feature$"
	# Delay Foo#method by 1 second before
	# executing its original implementation.
	def delay_method(klass, method)
	sleeping_giant = Module.new do
	define_method(method) do \|*args, &block\|
	sleep 1
	super(*args, &block)
	end
	end
	class Symbol
	def \|(other)
	self.to_proc \| other
	end
	end

	class Proc
	def \|(other)
	proc { \|arg\| other.to_proc.call(self.call(arg)) }
	end
	function prodssh { osascript -e 'tell application "Terminal" to set current settings of selected tab of window 1 to settings set "Red Sands"' && ssh "$@"; }

	# prodssh yourserver
	#
	# 1.8.7 docs: http://ruby-doc.org/core-1.8.7/classes/Proc.html#M000463
	#
	# Return true if prc is the same object as other_proc, or if they are both procs with the same body.
	#

	RUBY_DESCRIPTION #=> ruby 1.8.7 (2011-02-18 patchlevel 334) [i686-linux]

	proc { 1 } == proc { 1 } # => false
	proc { 1 + 1 } == proc { 1 + 1 } # => false
	>> local_variables
	=> ["_"]
	>> a = ""
	=> ""
	>> local_variables
	=> ["_", "a"]
	>> b = binding; local_variables.select { \|var\| b.eval(var).object_id == a.object_id }
	=> ["a"]
	>> x = a
	=> ""
	<!-- See it in action: http://jsfiddle.net/eVAg4/1/ -->

	<!doctype html>
	<head>
	<meta charset="UTF-8">
	<title>PDF link file sizes in CSS</title>
	<style type="text/css">
	a[href$=".pdf"]::after { content: " (PDF)"; }
	a[href$=".pdf"][data-size]::after { content: " (PDF, " attr(data-size) ")"; }
	</style>
	def foo(n, m)
	return n if n % m == 0
	n + m - (n % m)
	end

	foo(25, 7) #=> 28
	foo(28, 7) #=> 28
	foo(29, 7) #=> 35

	# No branching.
	# it turns out that "Ａ".ord - "A".ord is constant when you replace the two characters
	# with, say "Ｂ" and "B", so ("B".ord + DIFFERENCE).to_s(16) == "ff22" and "\uff22"
	# is "Ｂ". (Thanks, Unicode consortium.)
	#
	# an exception is U+0020 space, which has IDEOGRAPHIC SPACE U+3000, but the two don't
	# differ by DIFFERENCE == 65248 == 0xfee0, so you have to replace 20+65248 == 0xff00
	# with 0x3000.

	DIFFERENCE = 65248