writing

来源于:https://www.mkyong.com/java/apache-poi-reading-and-writing-excel-file-in-java/ In this article, we will discuss about how to read and write an excel file using Apache POI 1. Basic definitions for Apache POI library This section briefly describe a

I.Titles a precise description of the contents 1.Elements the main,general subject that the author is writing about; a detailed narrowing down of the topic into the particular,limited area of the research the purpose of one's writing(for a scientific

Overview Docker can build images automatically by reading the instructions from aDockerfile, a text file that contains all the commands, in order, needed to build a given image. Dockerfiles adhere to a specific format and use a specific set of instru

最近花了一些时间看了这本书,书名是 <Writing Clean Code ── Microsoft Techniques for Developing Bug-free C Programs> 这里主要总结了一些里面的编程思想. 为空语句加上NULL 当需要使用空语句的时候,最好写上NULL, 比如: if (music_on()) NULL; else turn_it_on(); 参数类型相同的问题 如果函数中两个参数的类型相同,如果用户调用这个函数时错误替换了参数的顺序,就会出现问题.

? 应用程序端碰到错误提示,MySQLNonTransientConnectionException:Got an error writing communication packets.与packet有关,之前一直都没有碰到过这个问题.数据库error日志也未见半点异常,到底是怎么一回事呢? 1.故障现象故障环境:$ cat /etc/issueCentOS release 5.9 (Final)Kernel \r on an \m [[email protected] ~]$ mysql -

In my previous post, I have already defined how you can inherit from an existing control and define your own reusable chunk. The reusable XAML code that I have defined there is actually a composition of one of more existing elements in a common desig

As a graduate, it's a shame that i do not have my technical blog. Actually, the thought of having my own blog last for long and i even wrote my personal home page. However, since the design of my home page is terrible, it's not easy for me to upload

Revisiting the code after some time has passed requires: ? Time to relearn and understand the problem ? Time to understand the code that is supposed to solve the problem As the application matures, many other things happen that require your code to b

Quick install guide 1.1   Install Python, it works with Python2.6, 2.7, 3.2, 3.3. All these version of Python include a lightweight database SQLite, so you don't need to setup a database 1.2   Remove any old versions of Django: if you are upgrading y

出现E212: Can't open file for writing的问题是由于权限问题导致的,解决方法有以下思路: 1.使用root进行登录,然后再操作. 2.在使用命令时,前面加sudo. 3.如果是多级文件夹的文件时,由于这个文件夹没有创建,所以要先创建这个文件夹,再来操作这个文件. Linux下使用vi新建文件保存文件时遇到错误:E212: Can't open file for writing