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Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

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schema	type	description
id	number	id of current instance
created_at	date	when instance created?
updated_at	date	when instance updated?
status	[1,2,3]	life status of instance

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const value = Number(amount)

this.validateFaield = !isNaN(value) ? value > balance : true
  ||
  ||
this.validateFailed = !(value <= balance)

// compare NaN value always return false.

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const binary = 0b1111
//=> 15

const oct = 0o1111
//=> 585

const decimal = 1111
// => 1111

const hex = 0x1111

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const random = require('lodash/random')

const swap = (arr, a, b) => {
  const c = arr[a]
  arr[a] = arr[b]
  arr[b] = c
}

/**

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with open('file') as f:
    data = f.read()
    print(data)
# with expression construct a context

# class method，最关键的是，context 本质上就是 __enter__, __exit__ 这两个方法，with 会自动的运行这两个方法。
class CustomOpen(object):
    def __init__(self, filename):
        self.file = open('filename')
        

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# python built-in data types.

Boolean bool 值  True  or  Flase
String
Bytes  / bytes array
Number
dict  key/value pairs
tuple  immutable unorder data
list   ordered mutable data 
set  unorder mutable data, values is unique,

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Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

var Article = require('../../../models/article');

Those suck for maintenance and they're ugly.

Possible solutions

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#
# CORS header support
#
# One way to use this is by placing it into a file called "cors_support"
# under your Nginx configuration directory and placing the following
# statement inside your **location** block(s):
#
#   include cors_support;
#
# As of Nginx 1.7.5, add_header supports an "always" parameter which

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" This line should not be removed as it ensures that various options are
" properly set to work with the Vim-related packages available in Debian.
runtime! debian.vim

" Vim self configurations
set cindent
set incsearch
set backspace=2
set foldenable