hackerrank alternatives

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Switch software versions via update-alternatives in Ubuntu

http://persevere.iteye.com/blog/1479524Update-alternatives is a tool dedicated to maintaining the system command link in the Ubuntu system, which makes it easy to set which command the system uses by default, which software version, for example, we have both open jdk and Sun JDK Two versions installed in the system. And we want the system to use the sun JDK by default, what should we do? Through the update-alterna

Use the update-alternatives command in Linux, updatealternatives

Use the update-alternatives command in Linux, updatealternatives Personal blog address: http://www.cnblogs.com/wdfwolf3/ Update-alternatives is a command used by the ubuntu system to switch the software version. For example, if there are several jdk versions in the system, map the directories where these commands are located to a unified system directory as links, and then manage them through update-

Top 5 SSH clients for Windows (alternatives of PuTTY)

This blog post lists 5 tools that can replace putty, some of which do not implement putty. As follows:PuTTy is the most popular SSH clients for windows-based systems. It's very small is size and easy to use. Most of the people in the Linux world prefer to use putty. But they is aware that there is many tools available to provides many features which Putty doesn ' t has. I have used many SSH clients and adding 5 alternatives of PuTTY client below which

Linux System update-alternatives Command use

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-

SaaS Model breeds cloud computing alternatives

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

Dpkg tool update-alternatives in Linux enables switching of symbolic link software versions

I. Functional roleUpdate-alternatives is a utility for dpkg that maintains symbolic links to system commands to determine what commands the system uses by default.In the Debian system, we may install a number of similar programs and optional configurations, such as Web browser programs (firefox,konqueror), window managers (Wmaker, metacity), and different themes for the mouse. In this way, users can choose when they are using the system to meet their

Do not misinterpret "Ubuntu does not use DOS alternatives"

On June 18, MarkShuttleworth met with the chairman of the China OSS Promotion alliance and said: "Ubuntu is not a DOS alternative ". What does this sentence mean? Let's ask, what is Mark's purpose in China this time? The fact is that Mark's visit to China was not designed to visit the OSS alliance, but to negotiate with the Ubuntu OEM (I will not talk about it here. Only in this context can we correctly understand the exact meaning of "Ubuntu does not use DOS

RedHat released Enterprise Virtualization at 3.0 cost less than proprietary alternatives

February 15 message: Today, Red Hat officially announced the official launch of Red Hat Enterprise Virtualization 3.0. This product greatly expands its strength in server and desktop virtualization management tools and kernel-based Virtual Machine management programs. According to RedHat, RedHat Enterprise Virtualization 3.0 balances the virtualization management features, performance, and scalability of new enterprises under Linux and Windows loads, and the cost is much lower than that of propr

Use the update-alternatives command to modify the Java version-automatically switch Java version

When more than one Java is installed in a Linux system, we can switch the Java version automatically when the original configuration file is not modified:[Email protected] ~]# update-alternatives--config java650) this.width=650; "title=" 3118.tmp.jpg "style=" height:160px;width:737px "src=" http://s4.51cto.com/wyfs02/M00/ 89/20/wkiom1gicoew4dxbaaau_kx0tym965.jpg "width=" 881 "height=" 156 "alt=" Wkiom1gicoew4dxbaaau_kx0tym965.jpg "/>To maintain the cu

First install JDK 6 sudo apt-Get install sun-java6-jdk and then set the default Java program sudo Update-alternatives-confi

Install JDK 6 first Sudo apt-Get install sun-java6-jdk Then you need to set the default JavaProgramSudo Update-alternatives -- config JavaEnter the corresponding options as prompted, and set them to JDK 6. The following settingsSudo Vim/etc/environment Add the following two lines:Classpath =/usr/lib/JVM/Java-6-sun/libJava_home =/usr/lib/JVM/Java-6-sunIf classpath and java_home are already set, change them to the above format and press ZZ

Epplus Alternatives, Excel Operations (Npoi,poi (Java))

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

Efective C + + clause 35: Consider alternatives other than the virtual function

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

Effective C + + clause 35 Consider alternatives other than the virtual function

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();}

Alternatives to nsdictionaryofvariablebindings in Swift

)) (==\ (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

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

-WINRT launcher alternatives for Windows phone development

, 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

jquery1.9+ to remove live alternatives

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

Effective C + +-----clause 35: Consider alternatives other than the virtual function

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

Go Raspberry Pi Raspberry Pi wireless NIC configuration [multiple method alternatives]

/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

What are the alternatives to the HTML5 frameset label? Solutions for frameset Label substitution

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

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