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# To connect this middleware.rb file to your sinatra app
# add 'use JWTAuthorization' as one of your first lines in
# your Application class.
# e.g.
# require 'middlewares.rb'
# class Application < Sinatra::Base
#   use JWTAuthorization
#   ...
# end

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#
# This first version should work on Mac OS X and Linux, but it spawns a process
#
#     http://stackoverflow.com/questions/7220896/
#     https://github.com/rdp/os/blob/master/lib/os.rb#L127
#     http://www.ruby-doc.org/core-2.0/Process.html
#

# the real memory (resident set) size of the process (in 1_024 byte units).
def Process.rss() `ps -o rss= -p #{Process.pid}`.chomp.to_i ; end

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  class MyResource
    include HTTParty
    debug_output $stdout # <= will spit out all request details to the console
    
    #...
  end

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When are Python circular imports fatal?

In your Python package, you have:

• an __init__.py that designates this as a Python package
• a module_a.py, containing a function action_a() that references an attribute (like a function or variable) in module_b.py, and
• a module_b.py, containing a function action_b() that references an attribute (like a function or variable) in module_a.py.

This situation can introduce a circular import error: module_a attempts to import module_b, but can't, because module_b needs to import module_a, which is in the process of being interpreted.

But, sometimes Python is magic, and code that looks like it should cause this circular import error works just fine!

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# coding: utf-8
import json
import re

import requests

# 替换成你自己的经纬度数据
# 查询方式 打开饿了么官网 -> 开发者模式 -> 输入送餐地址 -> 观察请求 -> 找到经纬度数据
latitude = 31.23978
longitude = 121.49968

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import jinja2
from flask import Flask, render_template, request, redirect, url_for
from flask.ext.sqlalchemy import SQLAlchemy

from . import formatting
from .config import get_config


db = SQLAlchemy()

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Python Cheatsheet
=================

 ################################ Input & Output ###############################
name = input('please enter your name: ')
print('hello,', name)
ageStr = input('please enter your age: ')
age = int(ageStr)

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function smoothScroll(el, to, duration) {
    if (duration < 0) {
        return;
    }
    var difference = to - $(window).scrollTop();
    var perTick = difference / duration * 10;
    this.scrollToTimerCache = setTimeout(function() {
        if (!isNaN(parseInt(perTick, 10))) {
            window.scrollTo(0, $(window).scrollTop() + perTick);
            smoothScroll(el, to, duration - 10);

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Specs

• Mini PC + Arduino = pcDuino
• OS: Lubuntu 和 Android 4.0 ICS
• 本地输出: HDMI
• 硬件接口与Arduino兼容

Details

• 支持通过任何I/O接口来连接Arduino的盾板(shield), 允许使用在Arduino中一样的代码.
• 出厂默认系统安装Ubuntu在NAND flash上. Ubuntu可以从NAND flash或者一个可以启动的microSD卡上启动.

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一行 Python 实现树

使用 Python 内置的 defaultdict，我们可以很容易的定义一个树形数据结构：

def tree(): return defaultdict(tree)

就是这样！