, and if you directly want to instantiate an object from the parent class, the compiler complains, because the vtable of the parent class is incomplete and the compiler cannot safely create an abstract class object. While in the construction of the child object, although the part of the parent object contained in the construction child object, vptr temporarily points to the vtable of the parent class, but when the construction of the child object is completed, Vptr eventually points to the vtabl
Statement in advance: The article only records the porting process for your convenience.
The touch screen of the mini2440 Development Board is the NEC touch screen, while the Android kernel provided on the FriendlyArm is for the tongbao LCD. Therefore, you need to modify the touch screen driver.
1. Why should I correct the touch screen?
There is an error in pixel and touch coordinates.
Http://sys.firnow.com/linux/x8002010n08m/27s90182549.html details:
2. Specific modification method: (not veri
System: Centos6.0
Introduction:
NIS (Network Information Services) was first Sun Yellow Pages (yp );
In a large domain, what if multiple Linux Hosts require the same account and password for each host? If you can have an account server to manage the accounts of all hosts in the domain, and other hosts need to log on to the server to find user information such as accounts and passwords, in this way, if you want to add, modify, or delete user data, you
The full name of nis is network information system, and yp (yellow pages ). Nis or yp allow many different unix machines to have the same system information, such as the same user account and password, so that System Administrators and Users can easily move between different machines, inevitably, there will be security flaws, but security is not discussed here. And about nis Chinese and English books can be
ConfigurationNISService
SetNISServer. AsNIS server, which needs to be installedYpserv Software Package. Directly useYpserv-2.8-3.Step 1: SetYpservThe service is automatically started after it is started.[Root @ VM1 root] #Chkconfig ypserv on[Root @ VM1 root] #Chkconfig ypxfrd on[Root @ VM1 root] #Chkconfig yppasswdd onYou can alsoIn the setup command.Step 2: SpecifyNISDomain Name[Root @ VM1 root] # nisdomainname grid1To maintain this domain name after restart, modifyIn the/etc/sysconfig/network
This is the first time to participate in the provincial race, the second time to participate in the formal team game.Last night very early to sleep, early in the morning can not sleep awake, the heart is both nervous and excited (although before the game and teammates said to do their best, but still very afraid of the iron AH). Then ate breakfast followed the school large troop came to the big. Found a lot of schools are coming, a lot of Daniel also came. Before the start of the game, I went to
returns 0)Source code CompilationMake (Compile the source code as machine)SOURCE InstallationMake install (copy the compiled file to the installation directory)RMP Package ManagementHow to use:Mount the disc firstmount/dev/cdrom/mnt/Ls/mnt/packageRPM-IVH zip-3.0-1.el6.i686.rpm (Install zip-3.0-1.el6.i686.rpm pack)RPM-IVH--nodeps yp-tools-2.9-12.el6.i686.rpm (Skip package dependency, Force install YP-TOOLS-
The following is an analysis of tcomdatacu. cpp. This CPP is very important and should be analyzed several times. This is the analysis of tcomdatacu. cpp (1 ).
Void TComDataCU::getPartPosition( UInt partIdx, Int xP, Int yP, Int nPSW, Int nPSH){ UInt col = m_uiCUPelX; UInt row = m_uiCUPelY; switch ( m_pePartSize[0] ) { case SIZE_2NxN: nPSW = getWidth(0); nPSH = getHeight(0) >> 1; xP = col;
among UNIX systems. It was first named Yello Page, sun renamed the trademark as NIS due to trademark conflicts, but YP is widely used in many cases. Thanks to the emergence of NIS, UNIX network management has been greatly promoted, so now almost all UNIX systems support it. The FreeBSD system is no exception. FreeBSD currently provides NIS v2 and is compatible with NIS v1.We can see that if a user wants to work on multiple UNIX systems, most of them
, the right endpoint X1 in step =1 (pixels), calculates the corresponding The y-coordinate y=kx+b the pixel point (x, Y (x)) as the coordinates of the current point.Calculate yi+1 = Kxi+1+b= K1XI+B+KDX= YI+KDX where dx = 1; Yi+1 = Yi+k.1.1.2 Analysis
When x increments by 1,y increments K(that is, the linear slope);
Note that the above analysis algorithm only applies to | k| The situation of ≤1. In this case,x increments by 1 andy increases by up to 1.
When | k| >1, you must swap
corresponding y-coordinate y=kx+b, and takes the pixel point (x, Y (x)) as the coordinates of the current point.Calculate yi+1 = Kxi+1+b= K1XI+B+KDX= YI+KDX when dx = 1; Yi+1 = Yi+k.1.2 Analysis
When x increments by 1,y increments K(that is, the linear slope);
Note that the above analysis algorithm only applies to | k| The situation of ≤1. In this case,x increments by 1 andy increases by up to 1.
When | k| >1, you must swap x,y position
It is divided into 8 quadrants accord
xright direction search, if there are non-boundary and unfilled pixels, then find these adjacent pixels in the rightmost one, and press it as a seed point into the stack, and then return to step (2);Three, Circle generation algorithm: Draw a circle by clicking the circle radius given the circle center.1. Through the definition of the circle: (X-XC) ^2 + (Y-YC) ^2 = r^2;2. Assuming that the equation for the circle is: X2+Y2=R2, then there is a function: F (x, y) =x2+y2-r2When f (x, y) >0, the co
indicates the data type of the variable that this pointer variable points to * * Pointer variable assignment: * The address operator is provided in C""To represent the address of a variable * to give the address of an integer variable A to P can have the following two ways: * (1) pointer variable initialization method *intA *int *p= a; * (2) Method of assignment statement *intA *int *p* p = a; * * The meta-calculation of the pointer variable: *1: pointer Operation method * (1) Take address oper
NIS (Network Information System) is designed to allow many computers on the Network to share a set of user data, a bit like MS Windows NT domain. NIS was first used by SUN Microsystems in its sun OS and later widely used on Various UNIX platforms. In the past, NIS were not called NIS, but YP (Yellow Pages). However, they were changed to NIS due to trademark issues. However, YP is often used. For example, we
the world coordinates, first rotate and then translate. The translation matrix is the inverse matrix of the matrix with the world coordinates of the camera as the translation volume, and the rotation matrix is the transpose matrix of the rotation matrix between the camera and the corresponding axis. For each frame, you only need to manually calculate the transformation matrix once.
4 (optional), 3D cropping: You can crop a body (straight line or polygon) that is not completely inside the video
interface and Channel 5 (YP or ain5) as the Y coordinate input for the touch screen interface. In the "Development of ADC Driver instances on S3C2440", the analog signal of the AD conversion is generated by a potentiometer on the Development Board and input through channel 1 (ain0, the analog signal here is the X coordinate and Y coordinate analog signals generated by the touch screen, which are input through Channel 7 and Channel 5 respectively. The
Article Title: configure the NIS service in linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
NIS Server Configuration]
Step 1: Install related software install the ypserv-2.19-3 and portmap-4.0-65.2.2.1 in the third disc, install the yp-tools-2.9.0.1 and ypbind-1.19-7.e15 In the second disc. Ypserv is the ser
The NIS (Network Information Service) is used to share information that needs to be used on all hosts on the network. NIS origin is Sun Microsystems Yellow Page, but YP has registered the company, so took the name NIS, NIS server Management account information, if all clients are in the domain, then only need one NIS server storage users can be, No need to store every machineSoftware Installation [[email protected] ~]# yum install ypserver[[email prot
I. Modification of authorizationGo to the Tomcat Bin directory and modify the authorization? pwd/Users/yp/Documents/workspace/apache-tomcat-7.0.68/bin? sudo755 *.sh
sudo is the system Super Administrator privilege.
chmod changing the access mode of one or more files
755 means that the user has read, write, and execute permissions on the file, and other people in the same group have permission to execute and read, no write permission
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