bo.zhu BoZhuM

## binary_tree.rb
# https://www.cs.cmu.edu/~adamchik/15-121/lectures/Trees/trees.html
module BinaryTree
  class Node
    attr_accessor :value, :left, :right, :parent
    def initialize(v, parent = nil)
      @value = v
      @left  = EmptyNode.new(self)
      @right = EmptyNode.new(self)
      @parent = parent
    end

## nested_attributes_uniqueness_validator.rb
class NestedAttributesUniquenessValidator < ActiveModel::EachValidator
  def validate_each(record, attribute, value)
    value = value.reject(&:_destroy) # let's ignore the items to be destroyed here
    unless value.map(&options[:field]).uniq.size == value.size
      record.errors[attribute] << "must be unique"
      duplicates = value - Hash[value.map{|obj| [obj[options[:field]], obj]}].values
      duplicates.each { |obj| obj.errors[options[:field]] << "has already been taken" }
    end
  end
end

## a-modern-frontend-dev.md

      
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                BoZhuM
                / a-modern-frontend-dev.md
            
            
              Created
              January 25, 2016 15:05
                — forked from dwayne/a-modern-frontend-dev.md
            
              
                Articles, tutorials and tools for modern front-end development.
              
          
    Problem: What does a Modern Front-End Development Workflow Look Like?

I want to start writing libraries and large applications using the JavaScript language. However, I don't know how to setup the project and which build tools to use. What I do know is that the JavaScript community has moved way beyond using browser developer tool plugins and strategically-placed console.log() statements to debug, test, and build code.
I need help.
Below, I will keep track of articles, tutorials and tools I come across as I search for a way to bring my front-end development chops up-to-date.
The Ultimate Resource


## index.html
<body>
  <div class="container">
    <div class='row'>
      <div class='col-md-3 col-sm-3 col-xs-3 text-center text-success'>
        <span class="fa-stack fa-lg">
          <i class="fa fa-circle fa-stack-2x"></i>
          <i class="fa fa-shopping-cart  fa-stack-1x fa-inverse"></i>
        </span>
        <p>hello1</p>
      </div>

## .vimrc
if !isdirectory($HOME."/.vim/bundle/Vundle.vim")
    silent !mkdir -p ~/.vim/bundle
    silent !git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim
endif

set nocompatible              " be iMproved, required
filetype off                  " required

" set the runtime path to include Vundle and initialize
set rtp+=~/.vim/bundle/Vundle.vim

## .vimrc
set nocompatible              " be iMproved, required
filetype off                  " required

" set the runtime path to include Vundle and initialize
set rtp+=~/.vim/bundle/Vundle.vim
call vundle#begin()
" alternatively, pass a path where Vundle should install plugins
"call vundle#begin('~/some/path/here')

" let Vundle manage Vundle, required

## cvimrc
" Settings
set nohud
set nosmoothscroll
set noautofocus " The opposite of autofocus; this setting stops
                " sites from focusing on an input box when they load
set typelinkhints
let searchlimit = 30
let scrollstep = 70
let barposition = "bottom"

## si.rb
require 'RMagick'

$scale_size = 256.0
$img_fn1 = ARGV[0]
$img_fn2 = ARGV[1]
$scale_size = ARGV[2].to_f if ARGV[2]

def calculate_threshold(img_fn)
   dir_name = File.dirname(img_fn)

## Hacker_News_Ranking_Algorithm.sql
-- (p - 1) / (t + 2)^1.5
CREATE FUNCTION SP_POINTS(P SMALLINT(5), CREATED TIMESTAMP)
 RETURNS TINYINT(3)
	RETURN (P - 1) / POW(TIMESTAMPDIFF(HOUR, CREATED, NOW()) + 2, 1.5);

## IE-hack
selector{
  property:value; /* 所有浏览器 */
  property:value9; /* 所有IE浏览器 */
  +property:value; /* IE7 */
  _property:value; /* IE6 */
}
	# https://www.cs.cmu.edu/~adamchik/15-121/lectures/Trees/trees.html
	module BinaryTree
	class Node
	attr_accessor :value, :left, :right, :parent
	def initialize(v, parent = nil)
	@value = v
	@left = EmptyNode.new(self)
	@right = EmptyNode.new(self)
	@parent = parent
	end
	class NestedAttributesUniquenessValidator < ActiveModel::EachValidator
	def validate_each(record, attribute, value)
	value = value.reject(&:_destroy) # let's ignore the items to be destroyed here
	unless value.map(&options[:field]).uniq.size == value.size
	record.errors[attribute] << "must be unique"
	duplicates = value - Hash[value.map{\|obj\| [obj[options[:field]], obj]}].values
	duplicates.each { \|obj\| obj.errors[options[:field]] << "has already been taken" }
	end
	end
	end
	<body>
	<div class="container">
	<div class='row'>
	<div class='col-md-3 col-sm-3 col-xs-3 text-center text-success'>
	<span class="fa-stack fa-lg">
	<i class="fa fa-circle fa-stack-2x"></i>
	<i class="fa fa-shopping-cart fa-stack-1x fa-inverse"></i>
	</span>
	<p>hello1</p>
	</div>
	if !isdirectory($HOME."/.vim/bundle/Vundle.vim")
	silent !mkdir -p ~/.vim/bundle
	silent !git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim
	endif

	set nocompatible " be iMproved, required
	filetype off " required

	" set the runtime path to include Vundle and initialize
	set rtp+=~/.vim/bundle/Vundle.vim
	" Settings
	set nohud
	set nosmoothscroll
	set noautofocus " The opposite of autofocus; this setting stops
	" sites from focusing on an input box when they load
	set typelinkhints
	let searchlimit = 30
	let scrollstep = 70
	let barposition = "bottom"
	require 'RMagick'

	$scale_size = 256.0
	$img_fn1 = ARGV[0]
	$img_fn2 = ARGV[1]
	$scale_size = ARGV[2].to_f if ARGV[2]

	def calculate_threshold(img_fn)
	dir_name = File.dirname(img_fn)
	-- (p - 1) / (t + 2)^1.5
	CREATE FUNCTION SP_POINTS(P SMALLINT(5), CREATED TIMESTAMP)
	RETURNS TINYINT(3)
	RETURN (P - 1) / POW(TIMESTAMPDIFF(HOUR, CREATED, NOW()) + 2, 1.5);
	selector{
	property:value; /* 所有浏览器 */
	property:value9; /* 所有IE浏览器 */
	+property:value; /* IE7 */
	_property:value; /* IE6 */
	}