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原创 what is __init__.py for?

Python defines two types of packages. regular packages and namespace packages. Regular packages are traditional packages as they existed in python3.2 and earlier. A regular package is typically implem...

2020-02-06 18:39:28 2784

原创 Merging an upstream repository into your fork

If you don't have push (write) access to an upstream repository, then you can pull commits form that repository into your own fork1. open a terminal2. change the current working directory to your ...

2020-02-05 13:22:31 128

原创 堆排序的java实现

/*最大堆*/public class HeapSort { int heapsize; int[] heap; /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub HeapSort hp = new HeapSort()...

2018-09-02 20:07:29 125

原创 opencv核心操作笔记--图像的基础操作

图像的基础操作目标:1. 获取图像的像素值并修改2. 获取图像的属性信息3. 图像通道的拆分以及合并1. 获取图像的像素值并修改import cv2import numpy as npimg = cv2.imread('./xxx.png')px = img[100,100]print(px)#BGR图像blue = img[100,100,0]prin...

2018-08-30 13:58:37 167 1

原创 OpenCV中的GUI特性--如何读入、显示以及保存图像

1. 如何读入图像import cv2path = './xxx.jpg'img = cv2.imread(path, 0)其中cv2.imread()的第二个参数告诉函数如何读取这个图像,默认参数为cv2.IMREAD_COLOWR: 读入一幅彩色图像。图像的透明度会被忽略,这是默认参数。2. 如何显示图像2.1 使用cv2.imgshow()cv2.imgshow(...

2018-08-30 13:38:52 428

原创 java中的栈内存和堆内存(笔记)

当一个方法执行时,每个方法都会建立自己的内存栈,在这个方法内定义的变量将会逐个放入这块栈内存里,随着方法的执行结束,这个方法的内存栈也将自然销毁.因此所有在方法中定义的局部变量都是放在栈内存的;在程序中创建一个对象时,这个对象将被保存到运行时数据区中,以便反复利用(因为对象的创建成本通常较大),这个运行时数据区就是堆内存.堆内存中的对象不会因为方法的结束而销毁,即使方法结束后,这个对象还可能被另一

2017-09-08 14:33:57 173

转载 关于Java Collections的几个常见问题

转自http://linbingdong.com/2017/01/07/Stack%20Overflow%E4%B8%8A%E5%85%B3%E4%BA%8EJava%20Collections%E7%9A%84%E5%87%A0%E4%B8%AA%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98/列举几个关于Java Collections的常见问题并给出答案。

2017-08-10 21:49:17 317

原创 leetcode TwoSum

解法一:双重循环, 复杂度O(n^2)public class Solution { public static void main(String[] args){ int c[] = {3,3,6}; Solution so = new Solution(); int[] result=so.twoSum(c,9); System.out.println(result[0]

2017-08-10 14:25:09 224

MLIR C4ML CGO Workshop Talk.pdf

MLIR C4ML CGO Workshop Talk

2021-08-18

数字图像处理和opencv

数字图像处理,opencv3机器视觉Python语言实现_刘波和OpenCV3编程入门_毛星云编著_电子工业出版三本书。 链接是网盘链接,失效可以私信联系我

2019-08-28

Python基础教程第3版

Python基础教程第3版,某盘链接,失效请私信我

2018-11-19

实战Java高并发程序设计

实战Java高并发程序设计 链接失效请联系我

2018-10-26

计算机系统基础袁春风

计算机系统基础袁春风 某盘链接,失效请联系我

2018-10-26

Git教程廖雪峰带目录

Git教程廖雪峰带目录和书签,高清版本有书签和目录。

2018-08-25

NumPy Cookbook 第二版英文版

作者:Ivan Idris 出版时间:2015 页数:258 语言:English 格式:PDF

2017-09-27

java核心技术卷一第十版中文版

java经典书籍,不用多介绍。java核心技术卷一第十版中文版(网盘链接),真实有效,如果链接失效请私信我。

2017-09-18

Python基础教程第三版(英文版)

Python基础教程第三版(英文版)Magnus Lie Hetland 经典Python书籍 英文版beginning from novice to professional third edition

2017-09-15

JavaScript设计模式

JavaScript设计模式

2017-08-21

用EXCEL学数据挖掘

[用EXCEL学数据挖掘].(上田和明).孙英英.扫描版

2017-08-21

算法导论课后答案

算法导论答案

2017-08-21

离散数学及其应用

离散数学及其应用

2017-08-20

TensorFlow For Machine Intelligence

TensorFlow For Machine Intelligence

2017-08-20

TensorFlow Machine Learning Cookbook

TensorFlow Machine Learning Cookbook.pdf

2017-08-20

计算机网络释疑与习题解答

计算机网络释疑与习题解答 配套谢希仁教材 第5版

2017-08-20

Python算法教程

Python算法教程

2017-08-20

Data Structures and Algorithms with Python

Data Structures and Algorithms with Python

2017-08-20

Pro JavaScript Techniques

Pro JavaScript Techniques Apress

2017-08-20

Foundations of Python Network Programming 2nd

Foundations of Python Network Programming 第二版

2017-08-20

The Essential Guide to HTML5 and CSS3 Web Design

The.Essential.Guide.to.HTML5.and.CSS3.Web.Design,.Grannell,.Sumner,.Synodinos,.Apress

2017-08-20

Pro PHP Application Performance

Pro PHP Application Performance

2017-08-20

Beginning PHP and MySQL

Beginning PHP and MySQL: From Novice to Professional, Fourth Edition is a major update of W. Jason Gilmore’s authoritative book on PHP and MySQL. The fourth edition includes complete coverage of PHP 5.3 features, including namespacing, an update of AMP stack installation and configuration, updates to Zend Framework, coverage of MySQL Workbench, and much more. You’ll not only receive extensive introductions to the core features of PHP, MySQL, and related tools, but you’ll also learn how to effectively integrate them in order to build robust data-driven applications. Gilmore has seven years of experience working with these technologies, and he has packed this book with practical examples and insight into the real-world challenges faced by developers. Accordingly, you will repeatedly return to this book as both a valuable instructional tool and reference guide. What you’ll learn How to install and configure Apache, PHP 5.3, and MySQL PHP and object-oriented programming basics New PHP 5.3 features and how to use them How to move beyond basic PHP, including using the Zend Framework How to use MySQL to securely store your website's data How to use MySQL Workbench to manage your database Who this book is for Developers who want to harness PHP and MySQL to create powerful web applications Table of Contents Introducing PHP Configuring Your Environment PHP Basics Functions Arrays Object-Oriented PHP Advanced OOP Features Error and Exception Handling Strings and Regular Expressions Working with the File and Operating System PEAR Date and Time Forms Authenticating Your Users Handling File Uploads Networking PHP and LDAP Session Handlers Templating with Smarty Web Services Secure PHP Programming SQLite Building Web Sites for the World MVC and the Zend Framework Introducing MySQL Installing and Configuring MySQL The Many MySQL Clients MySQL Storage Engines and Datatypes Securing MySQL Using PHP with MySQL Introducing PDO Stored Routines MySQL Triggers MySQL Views Practical Database Queries Indexes and Searching Transactions Importing and Exporting Data

2017-08-19

Pro PHP and JQuery

This book is for intermediate programmers interested in building AJAX web applications using jQuery and PHP. Along with teaching some advanced PHP techniques, it will teach you how to take your dynamic applications to the next level by adding a JavaScript layer with jQuery., * Learn to utilize built

2017-08-19

数据结构与算法分析

数据结构与算法分析

2017-08-14

java核心技术第一卷第十版英文版

java核心技术第一卷第十版英文版

2017-08-14

算法导论(美国)Cormen.扫描版

算法导论

2017-08-11

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