.
├── index.ios.js
├── js
│ ├── actions
│ │ ├── ChatServerActionCreators.js
│ │ └── ChatThreadActionCreators.js
│ ├── components
│ │ ├── ChatScreen
│ │ │ ├── index.js
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http://stackoverflow.com/questions/22667401/postgres-json-data-type-rails-query | |
http://stackoverflow.com/questions/40702813/query-on-postgres-json-array-field-in-rails | |
#payload: [{"kind"=>"person"}] | |
Segment.where("payload @> ?", [{kind: "person"}].to_json) | |
#data: {"interest"=>["music", "movies", "programming"]} | |
Segment.where("data @> ?", {"interest": ["music", "movies", "programming"]}.to_json) | |
Segment.where("data #>> '{interest, 1}' = 'movies' ") | |
Segment.where("jsonb_array_length(data->'interest') > 1") |
Sometimes you need to iterate over a ton of items and you don't want the overhead of creating AR objects out of all of them. Hell, you only need a few things! Well, #pluck has your back.
But what if you want to iterate over many tonnes of items?
Pluck in batches to the rescue!
Enjoy!
The purpose of design is to allow you to do design later, and it's primary goal is to reduce the cost of change.
- Single Responsibility Principle: a class should have only a single responsibility
- Open-Closed Principle: Software entities should be open for extension, but closed for modification (inherit instead of modifying existing classes).
- Liskov Substitution: Objects in a program should be replaceable with instances of their subtypes without altering the correctness of that program.
- Interface Segregation: Many client-specific interfaces are better than one general-purpose interface.
##Google Interview Questions: Product Marketing Manager
- Why do you want to join Google? -- Because I want to create tools for others to learn, for free. I didn't have a lot of money when growing up so I didn't get access to the same books, computers and resources that others had which caused money, I want to help ensure that others can learn on the same playing field regardless of their families wealth status or location.
- What do you know about Google’s product and technology? -- A lot actually, I am a beta tester for numerous products, I use most of the Google tools such as: Search, Gmaill, Drive, Reader, Calendar, G+, YouTube, Web Master Tools, Keyword tools, Analytics etc.
- If you are Product Manager for Google’s Adwords, how do you plan to market this?
- What would you say during an AdWords or AdSense product seminar?
- Who are Google’s competitors, and how does Google compete with them? -- Google competes on numerous fields: --- Search: Baidu, Bing, Duck Duck Go