Eric Bouchut ebouchut

## Comment a section of HTML+ERB
<%
=begin
%>

  This <a href="javascript:void(0);">will not be in the result HTML page.</a>

<%
=end
%>

## Remove comment lines (#) from a file
# Remove comment that spans a whole line (like this one)
# and comments at the end of a line like the following
: echo "Hello"   # comment at the end of a line

sed -e 's/#.*$//g' -e '/^[ \t]*$/d' file

## gist:83274db70170e363b444
curl  $URL --data @$FILE  -vv -L -H "Content-Type:application/json"
# curl  $URL --trace-ascii - --data @$FILE  -L -H "Content-Type:application/json"

## gist:ff0262995e93812b3790
tar cvzf ~/backup/project.tar.gz --dereference --exclude-vcs --exclude=/target/  project

## resize_image_increase_canvas_size
# I want to resize an image  from 600x128 to 225x100 while keeping its aspect ratio.
# Resizing the width to 225 while keeping the aspect ratio makes one dimension (height)
# smaller (225x48) than what I want to obtain (225x100).

# The workaround is to resize first,
# then increase the canvas of the other dimension (height)
# to obtain the desired size (225x100) then center the image in the canvas.


#~~~~~~~~~~~~~~~~~~~~~

## guard
############
## Problem
############

bundle exec guard

...
(This may be due to symlinks pointing to parent directories).

        Duplicate: /some/where/ebouchut/www/netadge/bo/rubymine/trunk/doc/simplecov

## activemodel_activerecord_generate_error_message
class User                     # class User < ActiveRecord::Base
  include ActiveModel::Model   #

  attr_accessor :name, :age

  validates :name, presence:     true
  validates :age,  presence:     true,
                   numericality: { only_integer: true, greater_than: 0 }
end

## find_xargs_file_with_name_containing_space
# I use  find -print0 and xargs -0 when the filenames contain characters used as delimitors,
# like space in this case
#

find '/tmp/temp results' -name '*.tmp' -print0 | xargs -0  -n 1  -J %  rm '%'

## git_push_default
git config `push.default`:

  – `nothing`: do nothing (make the user say what they mean)
  – `matching`: push all local branches for which a remote branch of the same name exists
  – `upstream`: push only the current branch, push it to its upstream, making push and pull symmetric
  – `simple`: like upstream, but only if the branch names match (will become default in 2.0)
  – `current`: push just the current branch

## ruby_block_to_proc
def convert_to_proc(&proc)
    proc
end

hello = convert_to_proc { |name| puts "Hello #{name}" }
hello.call("Eric") # => "Hello Eric"
	<%
	=begin
	%>

	This <a href="javascript:void(0);">will not be in the result HTML page.</a>

	<%
	=end
	%>
	curl $URL --data @$FILE -vv -L -H "Content-Type:application/json"
	# curl $URL --trace-ascii - --data @$FILE -L -H "Content-Type:application/json"
	# I want to resize an image from 600x128 to 225x100 while keeping its aspect ratio.
	# Resizing the width to 225 while keeping the aspect ratio makes one dimension (height)
	# smaller (225x48) than what I want to obtain (225x100).

	# The workaround is to resize first,
	# then increase the canvas of the other dimension (height)
	# to obtain the desired size (225x100) then center the image in the canvas.


	#~~~~~~~~~~~~~~~~~~~~~
	############
	## Problem
	############

	bundle exec guard

	...
	(This may be due to symlinks pointing to parent directories).

	Duplicate: /some/where/ebouchut/www/netadge/bo/rubymine/trunk/doc/simplecov
	class User # class User < ActiveRecord::Base
	include ActiveModel::Model #

	attr_accessor :name, :age

	validates :name, presence: true
	validates :age, presence: true,
	numericality: { only_integer: true, greater_than: 0 }
	end
	# I use find -print0 and xargs -0 when the filenames contain characters used as delimitors,
	# like space in this case
	#

	find '/tmp/temp results' -name '*.tmp' -print0 \| xargs -0 -n 1 -J % rm '%'
	git config `push.default`:

	– `nothing`: do nothing (make the user say what they mean)
	– `matching`: push all local branches for which a remote branch of the same name exists
	– `upstream`: push only the current branch, push it to its upstream, making push and pull symmetric
	– `simple`: like upstream, but only if the branch names match (will become default in 2.0)
	– `current`: push just the current branch
	def convert_to_proc(&proc)
	proc
	end

	hello = convert_to_proc { \|name\| puts "Hello #{name}" }
	hello.call("Eric") # => "Hello Eric"