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npoi Edit Npoi is the. NET version of the POI project. Poi is an open source Java program that reads and writes Microsoft OLE2 component documents such as Excel, Word, and so on. Chinese name Npoi Advantage Traditional Operations Excel encounters problems Constitute Read and write OLE2 documentation Based on Littleendian bytes Read and write H

to encapsulate the logic (algorithm) into a class and take a combination (delegate) approach to solve the problem.To implement an abstract interface, inheritance is a way: we declare an abstract interface in a base class and place specific implementations in a specific subclass. A combination (delegate) is another way: we place the implementation of the interface in the combined object, placing the abstract interface in the composition class.3. completed strategy mode by Std:functionthroughstd

specific use of function class templates and bind functions templates, see:http://blog.csdn.net/xiucaijiang/article/details/5999441Http://www.cplusplus.com/reference/functional/bind/?kw=bind5. "Classical Strategy Mode"Traditional strategy practice will make fun into a separate virtual function in the inheritance system, namely:class fun{public: virtualvoid fun (int num) {...} ... Private : ...} class base{public: Base (fun *para):p TR (para) {... } void Fun () {ptr-> fun();}

)) (==\ (namefor (view2)))][\ (namefor (view2))]-|Assuming that there is any merit in this writing, I think there should be at least two points, one is to avoid the pure handwritten string caused by the input error, the second is to change the variable name by refactoring to eliminate the trouble of string substitution ~ at the time of writing because the methods and variables are smart hints, write not look so troublesome ~ In addition to become longer than others are very good ~ How to write a

Provides Lightweight alternatives for dropshadowbitmapeffect in WPF Zhou yinhui WPF has an exciting new feature: We can easily provide bitmapeffect for visual elements, such as shadows. however, it is frustrating that bitmap results consume a lot of CPU resources. From the usual development, we can come up with two experiences: 1. Use bitmap effects as little as possible, because it is calculated by the CPU rather than the GPU. 2. Do not use bitmap

, Explorer.burnselection, Explorer.closesession, Explorer.erasedisc, Explorer.zipselection, File, Iehistory, Ierss, Javascript, Jscript, LDAP, Res, Rlogin, Stickynotes, Telnet, TN3270, Vbscript, Windowsmediacenterapp, Windowsmediacenterssl, Windowsmediacenterweb, WMP11. Assocprotocol.mmsAccording to the agreement name can understand the launch of the app, using the same way:await Windows.System.Launcher.LaunchUriAsync (Thenew Uri ("maps:"));3. Uri protocol associated with the storeApp Store jump

http://blog.csdn.net/aya19880214/article/details/39998117http://blog.csdn.net/pipi0714/article/details/7951752For dynamically created labels, if the event is mapped. Use live before the 1.7 release. Version 1.8 is recommended for use on.Use the following methodPrior to version 1.7$ ("#ajaxTable tbody tr"). Live ("Click", Function () {});If a simple replacement is taken for granted$ ("#ajaxTable tbody tr"). On ("click", Function () {}); Oh, not good use. We have to follow the following methods to

The alternative scheme of virtual function includes NVI technique and strategy design mode. The NVI technique itself is a special form of template method design mode.One drawback of moving functions from member functions to class external functions is that non-member functions cannot access the Non-public members of class.The Tr1::function object behaves like a generic function pointer. Such an object can accept all the callable objects (callable entities) that are compatible with the given targ

/wpa_supplicant/wpa_supplicant.confPost-down Killall-q Wpa_supplicantAfter the modification is complete, restart the network using the following commandsudo/etc/init.d/networking restartAfter success, you can see the wlan0 device with the Ifconfig command, and have the IP address (connected)Note: Both of these methods we are using DHCP dynamic IP, if you want to set the static IP method and the method to connect the hidden SSID AP:(1) Set the static IP:Modify Files sudo nano/etc/network/interfac

using the IFRAME, and the IFRAME is incompatible with different browsers. 2. Use jquery's OnLoad method to load the page, but after this method jumps to multiple pages, clicking back Forward on the top of the browser is not valid, but you can think of adding a back button. So the more popular is this approach: Take a look at the code example description for the frameset tag: The code above works as follows: These are the alternatives to the HTML5 f

By default, even with Java 1.6 version Java script jdk-6u31-linux-i586.bin, when Java is installed, it will automatically upgrade to a 1.7 version state. For some applications that need to be run based on version 1.6, a downgrade of 1.6 is required. There are two specific ways to do this:1. Use the alternatives command to implement.Alternatives is a powerful command under Linux, and can only be executed under root authority. If there are several comma

Since the development of Linux, there have been a lot of available software. In this way, some software functions are basically the same. For example, there are nvi, Vim, emacs, and nano in the editor. What I'm talking about is only part of it. In most cases, software with similar functions is installed in the system at the same time and can be executed using their names. For example, to execute vim, you only need to input Vim in the terminal and press Enter. However, in some cases, we need to u

Use update-alternatives to switch the default java commands in ubuntuSky @ sky-VGN-CR23-B :~ $ Cd/usr/java/jdk1.7.0 _ 21/Sky @ sky-VGN-CR23-B:/usr/java/jdk1.7.0 _ 21 $ cd ..Sky @ sky-VGN-CR23-B:/usr/java $ sudo ln-s./jdk1.7.0 _ 21./jdk1.7Sky @ sky-VGN-CR23-B:/usr/java $ sudo rm jdk-7u21-linux-i586.tar.gz.Sky @ sky-VGN-CR23-B:/usr/java $ sudo update-alternatives -- install/usr/bin/java/usr/java/jdk1.7/bin/ja

Article 35: Consider alternatives other than the virtual function Article 35 consider alternatives other than the virtual function Realizing template method mode by Non-virtual interface technique Implementing strategy mode with function pointers Complete strategy mode with Tr1function The classical strategy model Summary Virtual func

SPRINGMVC configuration of alternatives custom Dispatherservlet configurationThe three methods we wrote earlier in Spittrwebappinitializer are simply the abstract methods that must be overloaded. However, there are many more ways to overload, allowing for additional configuration.For example, Customizeregistration (). This method is called after Abstractannotationconfigdispatcherservletinitializer will dispatcherservlet the main lane servlet container

Personal blog Address: http://www.cnblogs.com/wdfwolf3/Update-alternatives is a command that Ubuntu systems use for software version switching. For example, there are several versions of the JDK in the system that map the directories of these commands to a system directory as a link, then manage them through update-alternatives and set the default startup version. With update-

As the saying goes, same. Just as former independent software developers (independent Software VENDOR,ISV) have extended the software portfolio from a single product to an integration suite in an effort to gain a stronger market position, today's software is the service (software-as-a-service, SaaS) Vendors are also leveraging a range of new SaaS platforms to launch the same strategy. As more and more organizations are willing to adopt SaaS alternatives