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/***
 * Excerpted from "The Definitive ANTLR 4 Reference",
 * published by The Pragmatic Bookshelf.
 * Copyrights apply to this code. It may not be used to create training material, 
 * courses, books, articles, and the like. Contact us if you are in doubt.
 * We make no guarantees that this code is fit for any purpose. 
 * Visit http://www.pragmaticprogrammer.com/titles/tpantlr2 for more book information.
***/
import org.antlr.v4.runtime.*;
import org.antlr.v4.runtime.tree.ParseTree;

yydai

/** Grammars always start with a grammar header. This grammar is called
 *  ArrayInit and must match the filename: ArrayInit.g4
 */
grammar ArrayInit;

/** A rule called init that matches comma-separated values between {...}. */
init  : '{' value (',' value)* '}' ;  // must match at least one value

/** A value can be either a nested array/struct or a simple integer (INT) */
value : init

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<script src="//ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<script>
jQuery.ajax({
    type: 'GET',
    dataType:'json',
    
    url: 'https://api.github.com/repos/yydai/yydai.github.io/issues/1/comments',
    success: function(data){
		//marker = JSON.stringify(data);
        //alert(marker);

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var base_url = 'https://api.github.com';
var title = document.title;
var owner = 'yydai';
var repo = 'yydai.github.io';
var search_issues = base_url + '/search/issues?q=' + title + '+user:' + owner;


function test() {
  jQuery.ajax({
      type: 'GET',

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pub_date	= `date +'%y.%m.%d %H:%M:%S'`
messages	= "Auto published by yydai at $(pub_date)"


publish:
	@echo "======================================"
	@echo "Begin publish the site, please wait..."
	@echo "======================================"
	@git add .
	@-git commit -m $(messages)

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#coding:utf-8
import re
import requests
from bs4 import BeautifulSoup

def join_str(contents):
    strings = []
    for content in contents:
        if isinstance(content, basestring):
            strings.append(content)

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# from: https://github.com/dpkp/kafka-python/blob/master/example.py

import threading, logging, time
import multiprocessing

from kafka import KafkaConsumer, KafkaProducer


class Producer(threading.Thread):
    def __init__(self):

yydai

Python Code snippets

1. File

1. Reading specific lines only (Python)

https://stackoverflow.com/questions/2081836/reading-specific-lines-only-python

with open("file") as fp:
    for i, line in enumerate(fp):
        if i == 25:

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import matplotlib.pyplot as plt

x = np.linspace(-5, 5, 200)     # x data, shape=(100, 1)
y1 = 2 * x #...
y2 = x ** 2 + 2
y3 = sin(x)


plt.figure(1, figsize=(8, 6))
plt.subplot(221)

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#include <iostream>
#include <stdio.h>
#include <vector>
#include <string>
#define N 256

using namespace std;

struct TreeNode {
	bool isEnd;