obs broadcaster

) { foreach( $this->_observers as $obs ) $obs->onChanged( $this, $name ); } public function addObserver( $observer ) { $this->_observers []= $observer; }}class UserListLogger implements IObserver{ public function onChanged( $sender, $args ) { echo( "'$args' added to user list\n" ); }}$ul = new UserList();$ul->addObserver( new UserListLogger() );$ul->addCustomer( "Jack" );?> This code defines fo

default. Syntax: dd [option] If = input file (or device name ). Of = output file (or device name ). Ibs = bytes: the number of bytes read from the buffer zone. Skip = blocks skip the ibs * blocks block at the beginning of the read buffer. Obs = bytes: the number of bytes written to the buffer zone. Bs = bytes: set the number of bytes in the read/write buffer at the same time (equal to setting ibs and obs )

. 　　 $ Du-AB 　　 8./dev/cdrom 　　 L032./dev 　　 36064./var/rawrite. exe 　　 37088./var 　　 6229./s1ack 　　 1l0./aa 　　 L0./wei 　　 45493. 　　 Disk operation 　　 Dd command 　　 Function: copies the specified input file to the specified output file, and supports format conversion during the copy process. You can use this command to implement the diskcopy command in DOS. Use the dd command to write the data on the floppy disk as a storage file on the hard disk, and then write the storage file to the second di

command: If = input file or device name. Of = name of the output file or device. Ibs = bytes indicates that bytes are read at a time (that is, the size of a block is bytes ). Obs = bytes indicates writing bytes at a time (that is, the size of a block is bytes ). Bs = bytes, and set the size of read/write blocks, in bytes. this parameter can replace ibs and obs. Count = blocks only copies blocks. Skip = blo

the Observer pattern.Observer interfaceThis interface defines only one method, the update () method, which is called by the Notifyobservers () method of the Observer object when the state of the object being observed changes.Public interface Observer { void update (Observable o, Object arg);}Observable classThe Observer class is a subclass of the Java.util.Observable class. Java.util.Observable provides a public way to support the Observer object, where two of these methods are important for

Displayelement.java,weatherstation.java Ibid.Weatherdata.javaImportjava.util.Observable; Public class weatherdata extends Observable { Private floattemperature;Private floathumidity;Private floatpressure; Public float gettemperature() {returntemperature; } Public float gethumidity() {returnhumidity; } Public float getpressure() {returnpressure; } Public Weatherdata() { } Public void measurementschanged() {setchanged (); Notifyobservers (); } Public void setmeasurements(floatTemperature

objects and methods to access resources. Observer Mode The Observer Mode provides another way to avoid close coupling between components. This mode is very simple: an object is allowed by adding a method (this method allows another object, that isObserverRegister yourself. When an observed object changes, the message is sent to the registered observer. The operations performed by these observers using this information are irrelevant to the observed objects. The result is that objects can commun

Copy codeThe Code is as follows:/*** Vcode* Param $ w canvas width* Param $ h canvas height* Param $ fnum: Number of verification code elements* Param $ fontsize verification code element size* Param $ Number of obs interferon*/ Function vcode ($ w, $ h, $ fnum, $ fontsize, $ obs ){$ Img = imagecreatetruecolor ($ w, $ h );$ White = imagecolorallocate ($ img, 255,255,255 );$ Black = imagecolorallocate ($ img

, can be used? And?. (note) 1) sorting problems, can be used with mutual diagrams and affinity maps (inspiration) 2) to expand the policy objectives, you can use the tree-like method, matrix chart and the priority matrix method 3 to arrange the time progress, to use the PDPC method (Process decision procedure diagram method) and the Activity Network Diagram method Two, Project human Resource Management 1. What are the processes involved in human resources management? (remember) (1) Project HR

I. PreambleCore: Server (Nginx-rtmp-module) + push-to-stream (OBS) + Accept-end (Jwplayer)Second, the service side 1. Download Nginx-rtmp-module ModuleAddress: Https://github.com/arut/nginx-rtmp-module2. Compile and install NginxCD./nginx-1.10.0/./configure--add-module=/path/to/nginx-rtmp-module--with-http_ssl_modulemakemake InstallNote: Modify the two code paths according to the actual situation3. Configure the nginx3.1 join nodertmp { server {

observers using this information are irrelevant to the observed objects. The result is that objects can communicate with each other without understanding the cause. A simple example is the user list in the system. The code in listing 4 shows a user list. when a user is added, it sends a message. When a user is added, the list can be observed by the log observer who sends the message.Listing 4. Observer. php _observers as $obs ) $

resources.Observer Mode The Observer Mode provides another way to avoid close coupling between components. This mode is very simple: an object becomes observability by adding a method (this method allows another object, that is, the Observer registers itself. When an observed object changes, the message is sent to the registered observer. The operations performed by these observers using this information are irrelevant to the observed objects. The result is that objects can communicate with eac

implemented, and changes can be obtained. */ { Private floattemperature; Private floathumidity; PrivateSubject Weatherdata; Publiccurrentconditionobserver (Subject weatherdata) { This. Weatherdata = Weatherdata;//The constructor requires the Weatherdata object to be used as a registration. Weatherdata.registerobserver ( This); } @Override Public voidUpdatefloatTempfloatHumidity,floatpressure) { This. temperature=temp; This. humidity=humidity; Display (); } Public voiddisplay

Addcustomer ($name){ foreach ($this->_observers as $obs) $obs->onchanged ($this, $name);}Public Function Addobserver ($observer){ $this->_observers []= $observer;}}Class Userlistlogger implements IObserver{Public Function onChanged ($sender, $args){ Echo ("' $args ' added to User list\n");}}$ul = new UserList ();$ul->addobserver (New Userlistlogger ());$ul->addcustomer ("Jack");?> This code

mode. It is only a compilation rule, while hardfloat indicates that FPU is used for floating point operations. Soft abi and softfp Abi are collectively referred to as the standard mode Abi. Therefore, when a floating point function is called, Apps or libraries compiled with-mfloat-Abi = soft can be run in OS compiled with-mfloat-Abi = softfp; Apps or libraries compiled with-mfloat-Abi = softfp cannot be run in OS compiled with-mfloat-Abi = soft. -Mfloat-Abi = softfp/soft and-mfloat-

Java language support for the Observer pattern.Observer interfaceThis interface defines only one method, the update () method, which is called by the Notifyobservers () method of the Observer object when the state of the object being observed changes.Public interface Observer { void update (Observable o, Object arg);}Observable classThe Observer class is a subclass of the Java.util.Observable class. Java.util.Observable provides a public way to support the Observer object, where two of these

the object's changes, from which the observed object and a reserved parameter void are passed Update (Observable o, Object arg);}The following is the class of the observer.Import java.util.vector;//is the Observer class public class Observable {//This is a change identifier to mark whether the observed person has changed the private Boolean changed = FALSE; Holding a list of observers private Vector obs; Public Observable () {

/1/20077 7 8/5/1947 1/1/20078 8 4/14/2005 1/1/20079 9 6/23/1961 1/2/200710 10 1/10/1949 1/2/2007>Sep parameter Setting separator symbol:> Data #制表符 use \ tThe characters that are read are as follows: China is recognized as a factor, so Stringsasfactors=falsei.e.:> data > Data$sex #转换为因子> str (DATA)' Data.frame ': Ten Obs. of 3 variables:$ column1:int 1 2 3 4 5 6 7 8 9 10$ column1:factor W/10 Levels "1/10/1949", "1/24/1972",..: 5 2 8 7 4 3 10 6 9 1$ co

The Viterbi algorithm can solve the most likely state sequence problem of the Hidden Markov Model. On Wikipedia, a python example is provided for the Viterbi algorithm. The original Article address is as follows: Http://zh.wikipedia.org/wiki/%E7%BB%B4%E7%89%B9%E6%AF%94%E7% AE %97%E6%B3%95 Since we are learning Ruby recently, we have migrated this algorithm from Python to Ruby. the syntax of these two languages is very close, so it is not difficult to move forward, I hope you can understand the b

[Switch] use dd tool to back up data reposted from 9812658 final edit 9812658 I. Introduction to dd commandsDd is a very useful command in Linux/Unix. It is used to copy an object with a specified size block andAt the same time, the specified Conversion========================================================== ======================================Ii. dd command usage1. Syntax formatDd [operand]Dd [Option]2. Option Parameters Explanation of DD Command Options