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1. playground playground Public

   systems design lib

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2. nextjs nextjs Public

   practice for nextjs

   TypeScript

3. using multi to pick values in parallel using multi to pick values in parallel

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   from tornado.gen import multi

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   async def parallel_fetch(url1, url2):

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     resp1, resp2 = await multi([http_client.fetch(url1),

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                                http_client.fetch(url2)])

4. yield decorated coroutines yield decorated coroutines

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   # decorated coroutine

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   @gen.coroutine

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   def a():

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     b = yield c()

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     #return and yield can not be used in Python 2 so raise a special exception