cmms meaning

The meaning of using the Apply function or the call function:In the face of object programming, when a object calls other objects instead of the A object method, all of the this references in the method point to the object in which the method resides, not the context of the current code, which is a object.To maintain the original point of this (that is, the A object), you need to use the Apply or call function.The difference between apply () and call

The most complete site metadata meta tag meaning and how to use itWith the popularity of HTML5 and the evolution of web technology, the META tag team is growing, from Windows XP IE6 to now Windows 7, Windows 8 IE9, IE10, IE11, HTML5 support is getting better. The function of HTML meta tags is becoming more and more powerful.First of all. Let's start with some of the first ones that are often used with meta tags.Start with the definition of meta tags.T

adapts to the position of the element and does not change the layout (this leaves a blank space where the element originally resides). Position:relative to Table-*-group, Table-row, Table-column, Table-cell, table-caption invalid. Absolute does not reserve space for elements, and the element position is determined by specifying its offset from the ancestor of its nearest non-static location. An absolutely positioned element can set margins (margins) and is not me

Transfer from http://www.jb51.net/article/51892.htmMany beginners just start to learn python often see python in __name__ = \ ' __main__\ ' such code, may be a lot of novice start learning at the time are more confused, python __name__ = ' __main__ ' role, What are you doing?There is a phrase that sums up the meaning of this code in a classic way:"Make a script both importable and executable"It means that the script module that you write can be import

After building the Linux environment, the meaning of each system directory and what kind of files are saved are described in detail as follows:1,/bin: Generally executable binary files, for all users.2,/sbin: Generally executable binary files, only for the administrator to use.3,/dev: device files, for example: Network card, disk, etc.4./etc: Configuration file5./home: User's House directory6./lib: Shared libraries and kernel modules7,/media and/mnt:

The meaning of the Linux command chmod 755chmod is Linux The following number represents the permissions for different users or groups of users under the command to set file permissions. It is usually three digits:The first number indicates the permissions of the file ownerThe second number indicates the permissions of other users who belong to the same user group as the file ownerThe third number represents the permissions of the other user groups .P

The meaning of shell variable $#,[email protected],$0,$1,$2 in Linux is explained:Variable Description:$$The PID of the shell itself (ProcessID)$!PID of the Shell's last running background process$?End code of the last Run command (return value)$-Flag at a glance using the SET command$*All parameter lists. such as "$*" in the Case of "" ", in the form of" $ $ ... $n "output all parameters.[Email protected]All parameter lists. such as "[email protected

The Bean class in Spring configuration uses the meaning of the factory bean to parseThe beautiful Life of the Sun Vulcan (http://blog.csdn.net/opengl_es)This article follows "Attribution-non-commercial use-consistent" authoring public agreementReprint Please keep this sentence: Sun Vulcan's Beautiful Life-this blog focuses on Agile development and mobile and IoT device research: IOS, Android, HTML5, Arduino, Pcduino , Otherwise, the article from thi

immediately initializes the optional type variable or constant to nil. Before calling the Init method.When accessing the optional Type property, if we determine that the property must have a value at this time, you can add "!" after the property name. "Tell the system," I'm sure this optional attribute has a value, force it out to use ", however, if the optional type attribute has a value of nil, then it will be crash. Oh. (If you access a property or call a function, you must use "!" Or "?", a

back down, then I let the wheel after the maintenance of balance, the principle should understand it! ( If this principle does not understand the proposal do not learn, but also do not control the direction, to avoid learning for a while to change the time to waste ) to continue, assuming that the car gyro angle 0 degrees when the car is balanced, if the angle is greater than 0 degrees I let the wheel forward, if the angle is less than 0 degrees I let the wheel turn, Obviously, the car is not b

Transferred from: http://www.cnblogs.com/fhefh/archive/2011/04/15/2017613.htmlThe meaning of shell variable $#,[email protected],$0,$1,$2 in Linux is explained:Variable Description:$$The PID of the shell itself (ProcessID)$!PID of the Shell's last running background process$?End code of the last Run command (return value)$-Flag at a glance using the SET command$*All parameter lists. such as "$*" in the Case of "" ", in the form of" $ $ ... $n "output

The meaning of several variables in a common shell with a $ symbol:Difference:@">@ * Same point: All parameters are referenced Different points: only in double quotes. Suppose that three parameters were written when the script was run (stored in1">123#xFF09;#x5219;quot;">3) "*" is equivalent to "1">123quot;#xFF08;#x4F20;#x9012;#x4E86;#x4E00;#x4E2A;#x53C2;#x6570;#xFF09;#xFF1B;#x800C;#x201C;">3"（Mass transferHanded a parameter number )

C#. NET Verification Code Intelligent Recognition Learning Note---03#. The meaning of the @ symbol in netTechnical QQ Exchange Group: javadream:251572072Tutorials Download, online exchange: it.yunsit.cn@ is the de-signifier in the cancellation string. Like a string that doesn't add @,"\\a\n" C # will be interpreted as a \ and a and a plus a newline, if you add @,@ "\\a\n" C # will be interpreted as two \ plus a plus a \ plus an nC#. NET Verification C

The status code consists of three digits, and the first number defines the category of the response, divided into five categories:1XX: Indication information--Indicates that the request has been received and continues processing2XX: Success-Indicates that the request has been successfully received, understood, accepted3XX: Redirect--further action is required to complete the request4XX: Client Error--Request syntax error or request not implemented5XX: Server-side error-the server failed to imple

1. Esri NamespaceAll objects are under the Esri namespace, and Esri has its own properties and methods.such as Esri.version returns the version number of the current JavaScript API. Esri.hide (Element) hides HTML elements, such as DIV or TABLE elements.2. Graphic ObjectIf you have done arcserver ADF development or Arcserver API for Silverlight development, you should be familiar with Graphic objects. This is a representation of an image that exists in memory and is used when we need to highlight

Excerpt from: Abs_guide: http://www.tldp.org/LDP/abs/abs-guide.pdf The meaning of shell variable $#,[email protected],$0,$1,$2 in Linux is explained:Variable Description:$$The PID of the shell itself (ProcessID)$!PID of the Shell's last running background process$?End code of the last Run command (return value)$-Flag at a glance using the SET command$*All parameter lists. such as "$*" in the Case of "" ", in the form of" $ $ ... $n "ou

Hello, I'm a little panda.Reprint Please specify source: http://blog.csdn.net/a237653639/article/details/45766101First summary, then prove.Summarize:The purpose of disabling the script is to make the script "not executed", and the purpose of enabling it is to "execute" the script. The above is my original idea, in fact, this understanding is biased. To be precise, even if the script is disabled, other scripts can successfully invoke the members of the disabled script ( It will be shown later .

HTTP Response Code code meaning 200 Created, the request succeeds, and the server has created a new resource. 201 Show only app instances in the warning state 301 Redirect, the requested page has been permanently moved to the new location. When the server returns this response, the requestor is automatically forwarded to the new location. 60W Redirect, the requeste

After the reading of the two articles, "extension of the string" and "the Things of character encoding", the meaning of the result of the Codepointat method in JS is probably understood.var str='??';console.log(str.codePointAt(0))//输出134071So how did this 134071 come from? We can understand it according to this passage.In http://tool.chinaz.com/tools/unicode.aspx This website can be "??" Converted to "\ud842\udfb7".1. Removing the \u will give you two

performed. Currently, parsing a pattern is only useful for non-anchored patterns that do not have a single fixed starting character. U (pcre_ungreedy) This modifier reverses the matching number of values so that it is not the default repetition, and becomes followed by the "?" to become repetitive. This is not compatible with Perl. It can also be set in the pattern (? U) modifier to enable this option. X (Pcre_extra) This modifier enables an additional feature that is incompatible with Perl