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initially i tried that but mongo throws an error , if i use $ it takes first matched element . { MongoError: cannot use the part (body of body.viewed.main) to traverse the element ({body: [ { type: "in", message: "yes", _id: ObjectId('587e2be40456010a3f4e3b8a'), createDate: new Date(1484663780842), hidden: false, viewed: { sub: false, main: false } }, { type: "in", message: "yes", _id: ObjectId('587e2be40456010a3f4e3c8a'), createDate: new Date(1484663780842), hidden: false, viewed: { sub: false, main: false } } ]})
api/database layer : I might go with nodejs + aws services or elixir/erlangVM. Database : I might go with mongodb/sql . And elastic search for fulltext searching application Layer : i might go with python or GO. web frontend : React js or phoenix elixir mobile : react native or traditional ios/android devlopemnt
Well it actually depends on what you want to build.I asked this question myself, I am a Javascript developer working in nodejs,react,angular etc. I answered this question myself by thinking what I want to build/learn in coming year . Finally I came with below list. Python : python is a great language for machine learning if you want to build some recommendation system etc. Basically all machine learning stuff from NLP to Neural networks. Javascript : Since I know js I can build a web app TO mobile app with javascript. React js is one the most popular languages of 2015-2016.So if you don't know js and want to build mobile/web apps go for it .From career point also it makes sense because js is on FIRE elixir-erlangVM : I love functional programming .And elixir is new functional lang with great syntax i guess most ruby developers will love it . I want to learn elixir because it runs on erlangVM by far the most robust ,fault tolerence,high availablity .Have a look at whatsapp stats https://blog.whatsapp.com/196/1-million-is-so-2011. GO : Google's open source project has become very popular recently. You can expect the community to talk more Go in 2017.
There is no error , 400 bad request is coming in response , If i send a request with above options in postman i am getting 200 OK status But through request module its giving 400 bad request and i tried setting json : true and JSON.stringify(response). 400 '<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n'