douMax

Data Structure & Algorithms

Basic javascript algorithms toolbox: starter kit - hackernoon

Introduction to Algorithms with Ruby -Thomas Roest

Tackling JavaScript Algorithm Challenges(Data Structures and Common Algorithms)

Common Data Structures and Algorithms

douMax

{title: "每天日语十分钟",
  description: "",
  start: "2018-2-1",
  end: "2018-2-22",
  members: [{id: 1, nickname:"走路兜风", avatar:"", wechat_ref:""},{id: 1, nickname:"走路兜风", avatar:"", wechat_ref:""}]}

douMax

rails new YOUR-APP-NAME-GOES-HERE --skip-turbolinks --skip-spring -d postgresql -T
cd YOUR-APP-NAME-GOES-HERE
rails g scaffold PostOrSomething title:string content:text author:string  # add other fields here as needed
rails db:drop  # make sure there is no existing DB to cause conflicts
rails db:create
rails db:migrate
rails g controller pages app                             # create a new controller with a single app action, where your app lives
# edit config/routes.rb to add the correct route line for "pages#app"
rails s   # good to go!

douMax

   @places = Place.where('lower(name) like ?', "%#{params[:q].downcase}%").all
   
   

douMax

number_to_currency(1234567890.50)                    # => $1,234,567,890.50
number_to_currency(1234567890.506)                   # => $1,234,567,890.51
number_to_currency(1234567890.506, precision: 3)     # => $1,234,567,890.506
number_to_currency(1234567890.506, locale: :fr)      # => 1 234 567 890,51 €
number_to_currency("123a456")                        # => $123a456

number_to_currency("123a456", raise: true)           # => InvalidNumberError

number_to_currency(-1234567890.50, negative_format: "(%u%n)")
# => ($1,234,567,890.50)

douMax

in React Native

We can use the numberOfLines(https://facebook.github.io/react-native/docs/text.html#numberoflines) parameter on a Text component: long long long long text Will produce:

long long long…

douMax

{%- form 'product',
  product,
  id: any_unique_form_id, 
  class: 'form',
  novalidate: 'novalidate',
  data-type: 'add-to-cart-form'
-%}
  <input