rpo meaning

Meaning of numbers after int (1) and varchar (4) Int (1), tinyint (4) which is larger.int big.Note the number in parentheses after the numeric type, which does not represent the length, represents the width of the display, which is different from the numeric meaning behind varchar and char.That is, regardless of the number behind the int, the range is always -2^31 to 2^31-1, but int (1) shows only single-d

Today, when you use _trename for file renaming, consider the possibility of renaming failures, and you need to log the errors corresponding to the error. From MSDN, the function fails to return a non-0, and the corresponding error code may be known through the errno macro. In order to locate the convenience of the problem, the error code corresponding to the meaning listed. 1, errno error code meaning

are really effective outside the chain (can be clicked directly into the site's link). Then those in the Forum signature Riga signature (non-hyperlink format), the role of Crazy post in the end how much can be imagined. The URL of the text format, will not guide the spider to come to your website. So personally think, domain this value to see just good, not too big meaning, do not have the meaning of the

define our own scanHigh availability: If scan corresponds to multiple IP addresses, Oracle attempts to use the second IP address in scan when the first IP address is attempted, and so on. If it fails, Oracle returns an error.(2.5) Background processClusterware runs on each node in the cluster, it is divided into two levels, the upper layer is: Cluster ready Services (CRSD), and the lower level is Oracle High Availability Services (OHASD)Each layer consists of a series of components that are rep

What this article brings to you is about PHP object-oriented. PHP Object-oriented meaning introduced, there is a certain reference value, the need for friends can refer to, I hope to help you. The meaning is summed up by Baidu. The key idea of object-oriented programming technology is that it puts the data and the operation behavior of the data together as an interdependent and indivisible whole-object. Cl

Label:See an index today, create INDEX index_name tableanme (colname,0), very strange, never seen before. After testing the discovery is a thing relative to the joint index, there is no meaning, is built wrong.Sql> select * from V$version;BANNER--------------------------------------------------------------------------------Oracle Database 11g Enterprise Edition Release 11.2.0.1.0-64bit ProductionPL/SQL Release 11.2.0.1.0-productionCORE 11.2.0.1.0 Prod

Label:Http://www.splaybow.com/post/mysql-prompt-introduce.htmlMysql>Be ready to accept the new command.Description: A prompt that normally waits for input.-Wait for the next line of the multiline command.Description: This is a hint when you are typing a SQL statement into multiple lines. If you enter an SQL statement that does not end with a semicolon.' >Wait for the next line, waiting for the end of the string to begin with single quotation marks ("'").Description: Before you should have entere

The meaning of the file color under Linuxblue indicates the directory;Green indicates executable file;red indicates compressed files;Light blue indicates a linked file;Grey indicates other documents;Flashing red indicates a problem with the linked file;Yellow is the device file, including block, Char, FIFO.Use Dircolors-p to see the default color settings, including various colors and "bold", underline, flashing and other definitions.If you need to ch

information.The/proc/kcore file provides access to the system's physical memory as a kernel file format and can be used by GDB to check the current state of any kernel data structure. If the source code is installed, you can get more information by looking at the/usr/src/linux/documentation/filesystems/proc.txt file.As can be seen from this, Proc is a very good access to the system information channels. If used well, it can provide a great help to the maintenance and management of Linux system.

In Java programming, we often use the System.out.println () method to output a string, and perhaps we have already guessed that println () is the method name, but what is the system and what is out?This involves the use of a static keyword. For example, the system is actually a class within the Java.lang.And out is a data member (also known as a field) inside the system, but this member is not the basic class, but the object of the Java.io.PrintStream class, and the Java.io.PrintStream class has

previous sibling node is previoussibling indicates what the next sibling node is nextsilbing Gets the value of the element property getattribute Sets the value of the element property SetattribiteIndicates that the replication node clonechild represents the deletion of child nodes removechlidInsert the NewNode node in front of TargetNode with what is represented InsertBeforeThe difference between childnodes and childrenChildNodes gets the element in the child node, the text, the comment node

1. Tdscdma_op_plmn_list4,100,240,0,100,240,32,100,240,112,100,240,128, change to 16 binary Yes0x03 0x64 0xf0 0x00 0x64 0xf0 0x20 0x64 0xf0 0x70 0x64 0xf0 0x80Reference: Http://www.cnblogs.com/bastard/archive/2013/05/09/3068602.html, which mentions 0x03 0x64 0xf0 0x00 0x64 0xf0 0x20 0x64 0xf0 0x70 (46000, 46002, 46007)Then the whole representation: 4 items, respectively 46000, 46002, 46007, 46008Nv65602:location–/nv/item_files/modem/nas/ehplmnDefault value–0x03 0x64 0xf0 0x00 0x64 0xf0 0x20 0x64

Interpolator is used to modify the animation effect, define the rate of change of the animation, can make the existing animation effect accelerated (acceleration), decelerated (deceleration), repeated (repetition), bounced (bounce) and so on.The contents of the document in Android are as follows:Acceleratedecelerateinterpolator rate changes at the beginning and end of the animation are slower, accelerating in the middleAccelerateinterpolator at the beginning of the animation the rate change is s

-party table and placed in the Student table. Course Abandon Maintenance*/@ManyToManyPrivatesetNewHashset(); @ManyToOnePrivateTeacher Teacher; @Entity @table (name = "T_course" ) Span style= "color: #0000ff;" >public class Course {@Id @GeneratedValu E private Integer ID; private String Coursedesc; // course description private String Courseno; // course code // course abandons the maintenance foreign key. @ManyToMany (mappedby= "courses" ) setnew hashset@Entity @table

Assign: Simple assignment, not changing index count-(void) Setmyobject: (ID) newvalue{_myobject=NewValue;} Copy: Create an object with an index count of 1 and then release the old object-(void) Setmyobject: (ID) newvalue{if(_myobject! =newvalue) {[_myobject release]; _myobject=[newvalue Copy]; }retain: Frees the old object, assigns the value of the old object to the input object, and then increases the index count of the input object to 1-(void) Setmyobject: (ID) newvalue{if(_myobject! =

Values begin with a # sign.The first 2 digits represent the transparency of the color, 00~FF, 00 indicates that the color is completely transparent, and FF indicates that the color is completely opaque.The latter 6 digits represent the RGB value of the color. such as: 000000 for Black, ffffff for white, ff0000 for red, 00ff00 for Green, 0000ff for blue, ffff00 for yellow.The following is an example of the background color of the slide-by menu (set to yellow here), which describes transparency.1

android:drawable attribute in the color_selector.xml above, Know that Android should be based on the folder to determine, in the Color folder file has the Android:color property, the file under the Drawable folder has the Android:drawable propertyIt is also important to note that the files referenced by the TextColor and background properties cannot be referenced in a random way, such as textcolor references Drawable_selector.xml,background references Color_ Selector.xml will make an error. So

index count of the input object to 1Use assign: for underlying data types (nsinteger,cgfloat) and C data types (int, float, double, char, and so on)Using copy: On NSStringUse retain: For other nsobject and its subclassesNonatomic, non-atomic access, no synchronization, multi-threaded concurrent access improves performance. Note that if you do not add this property, the default is two access methods are atomic transaction access@property (nonatomic, retain) Uitextfield *username automatically ge

contribution of different factors to a phenomenon is the so-called detailed analysis model. A lot of things that we seem to be unchanged, in fact, the internal composition of the proportion of the great changes have taken place. And some seemingly changing things, the relative relationship in fact there is no change, but a simple number of fluctuations. 　　 The website says average daily IP/PV visit volume is about 600/2400 means, today visit first page number is 2,400 times, Access IP is 600. T

Class A, and another class B inherits Class A. The following code is available:A = new B (); This is called the parent class's reference A to the subclass object, new B ();If your A is an interface, or an abstract class, then it is not possible to create an object, so that writing can also be used to refer to his subclass or to the object that implements the class. It's not obvious that this sentence is written here. In fact, it is mainly used in the parameters of the method, that is, polymorphi