vdw

Check for existing swap files

swapon -s

Create swap file with 1024k size

sudo dd if=/dev/zero of=/swapfile bs=1M count=1024

sudo mkswap /swapfile

vdw

Convert a dotted path to hash

def dotted_path_to_hash(hash)
  hash.map do |pkey, pvalue|
    pkey.to_s.split(".").reverse.inject(pvalue) do |value, key|
      {key.to_sym => value}
    end
  end.inject(&:deep_merge)
end

vdw

my_hash = {}

@objects.each { |obj| my_hash[obj.id] = obj }

my_array.collect{ |id| my_hash[id] }

vdw

i = 1000
i.toExponential();

// 1e+3

vdw

Basic CSS shortner rules

1) Trim white spaces

2) Remove new lines (/n) ~> single line

3) Remove last semi-column (;)

4) Hexadecimal color:

• #FFFFFF becomes #fff (color is case-insensitive)

vdw

CarrierWave.configure do |config|
  config.asset_host = proc do |file|
    'http://www.domain.com'
  end
end

vdw

Basic Git commands

git init Initiate git in an existing project.

git clone git@repository_ssh Clone a project (you do not have to create a folder).

git add . Add any new files under version control.

git commit -am 'This is a message.' Commit the changes.

vdw

Sublime Text 2 basic user settings

Preferences.sublime-settings

{
	"auto_complete": true,
	"auto_complete_commit_on_tab": false,
	"auto_complete_delay": 50,
	"auto_complete_selector": "source - comment",
	"auto_complete_size_limit": 4194304,

vdw

Install Sublime Text 2 on Ubuntu

Add repository

sudo add-apt-repository ppa:webupd8team/sublime-text-2

Update

sudo apt-get update

vdw

Basic CSS beautification rules

1) Order attributes alphabetically (not rules)