sonos explained

(application.applicationstate = = uiapplicationstateactive) { NSLog (@ "active"); The program is currently in the foreground} else if (application.applicationstate = = uiapplicationstateinactive) { NSLog (@ " Inactive "); The program is in the background }}about the structure of userinfo, the official structure of Apple: { "APS": { "Alert": "You got your emails.",

textOnly to True will only output the text of the element and ignore its original element label. Template code: Page effect: You can see that the strong element has no bold effect but only text.SummarizeIn fact, in the use of the process is not often used in the template of some of the advanced features, this article is only a few about the jquery Tmpl basic things. The use of this plug-in can give us a lot of benefits, before I in the dynam

implementation is very simple, that is, through the netstat command to get the number of waiting links in the Linux system (waitting_connections) if more than 1000 alarm, less than 1000 is normal).Nagios can identify 4 status return information,0 (OK) indicates the status is normal/green,1 (WARNING) indicates a warning/huangs color (System auto-harmony to write pinyin)2 (CRITICAL) indicates a very serious error/red3 (UNKNOWN) indicates unknown error/deep Huangs Nagios depending on the value ret

, including other users ' programs. 2) ps-a Show All Programs. 3) PS C lists the program, displays the actual instruction name of each program, and does not include the path, parameter or the indication of the resident service. 4) Ps-e The effect of this parameter is the same as specifying the "A" parameter. 5) When listing the program, PS e displays the environment variables used by each program. 6) PS F Displays the tree structure with ASCII characters, expressing the relationship between the

abbrev=none. The default is abbrev=all.-eraw= to refer to the parameters for the system call in hexadecimal. -esignal= Specifies the system signal for the trace. The default is all. such as signal=! SIGIO (or Signal=!io), which means that the SIGIO signal is not traced .-eread= output reads data from the specified file. For example: NBSP;-ENBSP;READ=,NBSP;-E write= output writes data to the specified file .-ofilename writes the output of Strace to a file filename-ppid Tracks the specified pr

0.000.000.0044.60 0.009.14419.82 1.6336.460.361.62dm-1 0.000.000.00 0.000.000.00 0.000.000.000.000.00For the example output above, we can obtain the following information:Write about 30M data (wkb/s value) to disk per second91 IO operations per second (R/S+W/S), with write as the principalAverage per IO request waits 120.57 milliseconds, processing time is 6.33 millisecondsIn the queue of IO requests waiting to be processed, there are an average of 11.79 requests residingThere is also a connect

0.000.000.00 0.000.000.000.000.00For the example output above, we can obtain the following information:Write about 30M data (wkb/s value) to disk per second91 IO operations per second (R/S+W/S), with write as the principalAverage per IO request waits 120.57 milliseconds, processing time is 6.33 millisecondsIn the queue of IO requests waiting to be processed, there are an average of 11.79 requests residingThere is also a connection between the above values, and we can calculate other values by s

0.000.000.0044.60 0.009.14419.82 1.6336.460.361.62dm-1 0.000.000.00 0.000.000.00 0.000.000.000.000.00For the example output above, we can obtain the following information:Write about 30M data (wkb/s value) to disk per second91 IO operations per second (R/S+W/S), with write as the principalAverage per IO request waits 120.57 milliseconds, processing time is 6.33 millisecondsIn the queue of IO requests waiting to be processed, there are an average of 11.79 requests residingThere is also a connect

Python version, the different version of the compiled PYc file is different, 2.5 compiled PYC files, 2.4 version of Python is not executable. Why need PYC file: This demand is very obvious, because the py file can be directly see the source code, if you are developing commercial software, it is impossible to release the source code too? So it needs to be compiled into PYc and then released. Of course, PYC files can also be anti-compilation, different versions of the compiled PYC file is dif

thrown and processed by the statement in the method body.The throws statement is used after the method declaration, which means that the exception is thrown and handled by the caller of the method.Throws primarily declares that this method throws an exception of this type so that its caller knows to catch the exception.Throw is a specific action that throws an exception, so it is throwing an exception instance.Throws shows that you have that possibility, inclination.Throw the word, that is, you

common variables, have a Python interpreter to help you recycle,and like some resources like the operating system borrowing need you to perform a recycling method to release yourself;Like file handles, close operations, and some network resources;3. Computer internal implementation of some small common sense:A: Apply a space the operating system will assign to you B: everything within this space is managed by your Python interpreter;So when you borrow the operating system resources, you have t

should only appear in the copy constructor and assignment operators in order to implement the move semantics.x x::operatorconst// General implementation x X::operator= (x RHS) { // move semantics, exchange this and RHS contents return * this;}Overloading of a copy constructor that implements an Rvalue-based reference is also similar. Important : There are still some minor flaws in the fact that the first look is correct, which often happens in C + +. It turns out that in some case

refactored.So in a sense, we're going to be stuck here in the mire of uncertainty: Once a variable is allocated, but the object held by that variable is still in place. Only the destructor of that object is feasible when there are no side effects on the outside. But at some point, destructors do have this side effect. One example is releasing a lock in a destructor. Therefore, any part of the destructor that may contain side effects should be clearly represented in the Rvalue reference overload

#!/usr/bin/pythonSpecify what interpreter to use to run the script and where the interpreter is located#-*-Coding:utf-8-*-Used to specify that the file is encoded as Utf-8.This stuff is commonly used in CGI scripts, where Apache launches CGI scripts to know that this is a Python script and where to execute the Python interpreter path it needs.Sometimes writing #!/usr/bin/python or not, very simple, because the Python interpreter is not installed in the/usr/bin/directory, change to its directory

using the C character Delimited X column collationUniq command: Remove duplicate front and back rows from inputuniq [option] ... [File] ...-C: Shows the number of occurrences per line-D: Show only rows that have been repeated-U: Displays only rows that have not been duplicated, continuous and identical as duplicatesCommonly used with the sort command:Sort Userlist.txt | Uniq-c[[email protected] ~]# Sort-r txt | Uniq-c4 ssssss1 eeeeee1 dddddd4 AAAAAADiff command compares the differences of two f

# line from the number of lines that the cursor containsywCopy a word where the cursor is located#ywCopy the # Word where the cursor is locatedYyCopy a row where the cursor is located#yyCopy the # line from the number of lines where the cursor is locatedPPasteUCancel operationcwChange a word in the position of your cursor#cwChange the # Word where the cursor is locatedThe following table lists some of the instructions in the line command modeW filenameSave the file you are editing as filenameWQ

corresponding dynamic library when installing the programStatic library file: A static library cannot be shared as a dynamic library, it is contained within a program and can only be called by that program. Unable to save memory as a dynamic library/proc: Pseudo File system: Contains the kernel's mapping file. Our systems, such as CPU information, are in there./sys: Another pseudo file system: it contains hardware mappings/tmp: Temp file/OPT: Optional directory: Previously used for storage of t

corresponding dynamic library when installing the programStatic library file: A static library cannot be shared as a dynamic library, it is contained within a program and can only be called by that program. Unable to save memory as a dynamic library/proc: Pseudo File system: Contains the kernel's mapping file. Our systems, such as CPU information, are in there./sys: Another pseudo file system: it contains hardware mappings/tmp: Temp file/OPT: Optional directory: Previously used for storage of t

(user); Result:{' age ': ' + ', ' password ': ' 123 '}Items(): Get all the values of the dictionary user={ " Username ": " Dylan " " age " : " 18 " , password " : " 123 " }values =user.values (); print (values); Results:dict_values (['], ' Dylan ', ' 123 ')del keyword-deletes the specified item according to the specified keyUser={ "username":"Dylan", " Age":" -", "Password":"123"}deluser["username"]Print(user);Result:{' age ': ' + ', ' password ': ' 123 '}-----

to help us reduce the time it takes to develop Web applications using the MVC design model. Struts is a good choice if we want to mix the benefits of Servlets and JSPs to build scalable applications. Struts is an open source project sponsored by the Apache Software Foundation (ASF). It was originally a subproject in the Jakarta Project and became the top-level project for ASF in March 2004. Using javaservlet/jsp technology, it realizes the application framework of MVC design pattern based on Ja