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class Specification:

    def __and__(self, other):
        return And(self, other)

    def __or__(self, other):
        return Or(self, other)

    def __xor__(self, other):
        return Xor(self, other)

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import os
import asyncio
import sys

from asyncio.streams import StreamWriter, FlowControlMixin

reader, writer = None, None

@asyncio.coroutine
def stdio(loop=None):

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# import config.
# You can change the default config with `make cnf="config_special.env" build`
cnf ?= config.env
include $(cnf)
export $(shell sed 's/=.*//' $(cnf))

# import deploy config
# You can change the default deploy config with `make cnf="deploy_special.env" release`
dpl ?= deploy.env
include $(dpl)

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2 - Autos & Vehicles
1 -  Film & Animation
10 - Music
15 - Pets & Animals
17 - Sports
18 - Short Movies
19 - Travel & Events
20 - Gaming
21 - Videoblogging
22 - People & Blogs

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#/bin/sh
ffmpeg -i input -c:v libx264 -preset slow -profile:v high -crf 18 -coder 1 -pix_fmt yuv420p -movflags +faststart -g 30 -bf 2 -c:a aac -b:a 384k -profile:a aac_low output

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Latency Comparison Numbers
--------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD