invented cloning

Today to introduce a concept, object cloning. This article has certain difficulty, please prepare mentally. Do not understand the words can read more than two times, or do not understand the words, you can leave a message below, I will see the situation to modify and supplement.Cloning, the nature is to copy the object again, then why use cloning it? When do I need to use it? First look at a little chestnut

between multiple snapshot mirrors. The tree-like structure allows us to easily browse and use the generated snapshots. So what exactly does the new snapshot feature bring us? In fact, multiple snapshots do not simply save multiple states of a virtual machine, and by creating multiple snapshots, you can save multiple states for different jobs and do not affect each other.For example, when we do experiments on the virtual machine or test, inevitably encountered some unfamiliar places, at this tim

Oracle Database cloning is also called Oracle Database Replication. It can be achieved through user management or RMAN. In addition, Oracle recommends using RMAN because it is easy to use and hides its complicated logic. You can just run a duplicate command to drink tea. Of course, preparations in the early stage are indispensable, such as creating the corresponding dump directory, preparing the parameter file, and configuring the listener. This artic

The cloning of a KVM virtual machine is divided into two cases, the first KVM host on the virtual machine directly clonedThe second replication clone (for a static migration of a different machine)by copying a configuration file to a virtual machine with a disk file.Now I will separate the two KVM virtual machine cloning of the detailed operation process are recorded as follows:Method One: Direct

There are two large classes of data in JavaScript, the base type and the reference type. Because reference types use pointers, cloning is not possible at simple assignments, and two methods are described below to implement JavaScript deep cloning. 1. native JavaScript:functionclone (former) {if (! ( Formerinstanceofobject) | | former===null| | (FORMERNBSP;INSTANCEOFNBSP;REGEXP) | | (formerinstanceoffunct

Environment, P630 two units, one can not boot, a normal startup, hardware information:P630-1 (Unable to boot) p630-2 (boot hdisk7)Solt Solt1 HDISK6 12 Hdisk5 (BAD) 23 3 Hdisk54 HDISK8 4 Hdisk7There are 3 mirror on machine number 2nd, so take the demolition first.2#UNMIRRORVG ROOTVG2#lsvg-l ROOTVG can be viewed, is a copy.2#lspv-l Hdisk1 (because the front desk backstage hdisk number is not unified, 7=1;5=7)The discovery has been empty hdisk1, OK, now start cloningFirst, unplug the hard drive fro

First, shallow cloning of objectsObject Shallow clone to note the details: If an object needs to invoke clone's method clone, then the class to which the object belongs must implement the Cloneable interface. The Cloneable interface is just an identity interface, and there is no method. A shallow clone of an object is when an object is cloned, and if the object of another class is maintained in the cloned object, it is simply

This article introduces the object-oriented abstract methods in PHP and the use of abstract class __call cloning objects, and friends who need to be able to learn. Abstract methods and abstract classes In the OOP language, a class can have one or more subclasses, and each class has at least one public method that accesses its interface as an external code. and abstract methods are introduced for the convenience of inheritance, let us first look at the

Suddenly saw the object cloning this thing, and looked at it is the object class in the native method, feeling can improve the operation efficiency of the program. To study this thing.Part I. Briefly describe the cloning of an objectUsually when we use the object, as long as we get the reference of this object, the referrer can modify the properties of the object arbitrarily (first the object has the extern

is to start, Yes) nm_controlled=yesbootproto=static (the IP address is dynamically obtained or static, static) ipaddr=192.168.171.10 (IP address, This IP address must not be set to be the same as the gateway IP) netmask=255.255.255.0 (subnet mask) gateway=192.168.171.2 (default gateway)After the setup is complete, reboot the NIC, command:Service Network restartAfter the reboot is complete, you can ping the virtual gateway (the URL set above) and the physical gateway (the one that corresponds to

Clone in VMware's vm-manage option, clone an identical virtual machine 1, cloning a virtual machine, Baidu on this article has said. How VMware virtual machines are cloned 2, after cloning, can not be networked, how to set (if the virtual machine is a fixed IP, please first replace the fixed IP with the non-conflicting IP). Locate the file that ends with _persistent-net.rules in the directory/etc/udev/rules

Tags: linux cloning and server login1, the Linux server can clone the virtual machine, so that two convenient operation, the cloning steps are as follows:Open the virtual machine---Right-click-Manage = = Clone: To the following interface:650) this.width=650; "Src=" Https://s2.51cto.com/oss/201710/24/1c720aa57f8d5cadff78399abffb6586.png-wh_500x0-wm_3 -wmp_4-s_1279585888.png "title=" 1.png "alt=" 1c720aa57f8d

1, Linux server is actually able to clone the virtual machine, so that more than a new installation more convenient, you can operate on two convenient, cloning steps are as follows:Open the virtual machine---Right-click-Manage = = Clone: To the following interface:Clone the current state of the virtual machine:Create a complete clone to facilitate later operation:3. Show cloning Progress:4.

Record a common face question, a deep clone of the object in JavaScript, reprinted from: http://www.2cto.com/kf/201409/332955.htmlToday we will talk about a common written test, interview questions, JS object in depth cloning. Turned over this topic, in many places, has been an old problem, but the annual school recruit always test, in fact, think, this topic to examine the knowledge point is quite many, especially the basic knowledge of the examinati

I sorted out the following documents and analyzed why one sentence can be used to perform in-depth cloning of pure data json objects. If you are interested The Code is as follows: Var dataObjCloned = JSON. parse (JSON. stringify (dataObj )) This is what I saw on the big city chubby Weibo last night. At that time, I was very interested. I just marked it. Today, I sorted out the following documents and analyzed why a single sentence can achieve deep

",+),newperson ("Little Purple")}; Arrays.sort (a); for (inti=0; i System.out.print (A[i]); System.out.print ("\ r \ n"); Arrays.sort (b,newpersoncomparator ()); for (inti=0; i System.out.println (B[i]); } } Custom Classes class person { Public String name; Public intage; Public Person (String name,intage) { this. name=name; this. age=age; } @Override Public String toString () { return "person [name="+ name + ", age="+ Age + "]"; }

V. Cloning a virtual machinePremise:1. The UUID and MAC address of the card configuration file of the template machine have been deleted ( [email protected] ~]# Vim /etc/sysconfig/network-scripts/ifcfg-eth0 )2. The NIC configuration file has been emptied ( [email protected] ~]# >/etc/udev/rules.d/70-persistent-net.rules )3, the template machine is in the shutdown state650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M01/7F/3E/wKiom1cXR8niQuc1AAC

Write your own PHP Curl library to achieve the entire station cloning function, Phpcurl Sometimes the use of some online manuals, such as domestic or foreign, some are slow access, some are the author of the direct bar site is closed, some servers are always down, so or the overall cloning to their own server relatively cool. Library Features: Given an initial connection, all files are copied locally at th

Sometimes the use of some online manuals, such as domestic or foreign, some are slow access, some are the author of the direct bar site is closed, some servers are always down, so or the overall cloning to their own server relatively cool, Here to recommend to everyone touched a curl library, can achieve the whole station cloning function, for copying some manual site is very practical. Library Features:giv

Hard disk cloning, which is a disk clone, is used to copy all the data from one disk to another, and its purpose is embodied in the following areas: HDD Upgrade: Upgrade your old hard drive or small hard drive to a new large hard drive, and use disk cloning to upgrade your hard drive to avoid reloading the system and reinstalling the application. Migrate data: Quickly migrate all data from one disk to ano