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## python_socket.md

      
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                ssdemajia
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              April 9, 2018 02:02
            
              
                Python socket编程
              
          
    udp

首先是udp客户端：
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.sendto("lalala".encode("utf-8"),("127.0.0.1",9000))
socket.SOCK_DGRAM表示udp的数据报式通信，socket.AF_INET表示IPv4协议族。sendto是无连接的数据发送函数，在函数中第一个参数表示你的payload，
在python3中需要的是Bytes类型，所以需要将字符串encode编码为bytes，第二个参数是一个元组，分别是地址和端口号。

  
## clock_deco.py
"""time.perf_counter()用于python3,如果实在python2中需要改为time.clock()"""
import time
import functools
def clock(func):
    @functools.wraps(func)
    def clocked(*args, **kwargs):
        t0 = time.perf_counter()
        result = func(*args)
        elapsed = time.perf_counter() - t0
        name = func.__name__

## coroutine.py
from functools import wraps

def coroutine(func):
  """
  装饰器，用来预激活协程，协程用之前需要用next来激活
  """
  @wraps(func)
  def primer(*args, **kwargs):
    gen = func(*args, **kwargs)
    next(gen)   # 激活

## bind.js
function bind(func, obj) {
  return function() {
    return func.apply(obj, arguments);
  };
}
// 使用
// 比如一开始有一个函数
function foo(something) {
  console.log(this.a, something);
  return this.a + something;

## doublelinklist.py
class Node:
    def __init__(self, prev=None, nex=None, val=None):
        self.prev = prev
        self.next = nex
        self.val = val


class DoubleLinkList:
    def __init__(self):
        self.head = Node()

## index.html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
</head>
<body>
  <div id="drag">

## index.html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
</head>
<body>
  <div class="container">

## selectAndShare.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>

## index.html
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

## LRU.py
# coding:utf-8
class Node:
    def __init__(self, prev=None, nex=None, val=None):
        self.prev = prev
        self.next = nex
        self.val = val


class DoubleLinkList:
    def __init__(self):
	"""time.perf_counter()用于python3,如果实在python2中需要改为time.clock()"""
	import time
	import functools
	def clock(func):
	@functools.wraps(func)
	def clocked(args, *kwargs):
	t0 = time.perf_counter()
	result = func(*args)
	elapsed = time.perf_counter() - t0
	name = func.__name__
	from functools import wraps

	def coroutine(func):
	"""
	装饰器，用来预激活协程，协程用之前需要用next来激活
	"""
	@wraps(func)
	def primer(args, *kwargs):
	gen = func(args, *kwargs)
	next(gen) # 激活
	function bind(func, obj) {
	return function() {
	return func.apply(obj, arguments);
	};
	}
	// 使用
	// 比如一开始有一个函数
	function foo(something) {
	console.log(this.a, something);
	return this.a + something;
	class Node:
	def __init__(self, prev=None, nex=None, val=None):
	self.prev = prev
	self.next = nex
	self.val = val


	class DoubleLinkList:
	def __init__(self):
	self.head = Node()
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>Document</title>
	</head>
	<body>
	<div id="drag">
	# coding:utf-8
	class Node:
	def __init__(self, prev=None, nex=None, val=None):
	self.prev = prev
	self.next = nex
	self.val = val


	class DoubleLinkList:
	def __init__(self):