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migration function. Command format YIIC migrate [action] [parameter] The action parameter is used to define which migration task to perform. Can be used as a Up, down, to, create, history, new, mark. These commands If there is no action parameter, the default is up The parameter varies depending on the action. The above example gives a description. The official also gives a detailed example. Http://www.yiiframework.com/doc/guide/1.1/zh_cn/database.migration#creating-migrations There is no longe

be used. For example m/jewel/i The above regular expression will match the Jewel,jewel, or Jewel, in the target object. In Perl, you use the specialized operator "=~" to specify a matching object for a regular expression. For example: $flag =~ s/abc/abc/ The above regular expression will replace the string ABC in the variable $flag with ABC. Below, we will add a regular expression to the Perl program to verify the validity of the user's email address format. The code is as follows: #!/usr/bin/p

// Define a class like this Function Person (name, gender ){ // Add object properties like this This . Name = Name; This . Gender = Gender ;} // Add methods like this. All person objects will be able to invoke this Person. Prototype. Speak = Function () {Alert ( "Howdy, my name is" + This . Name );} // Instantiate new objects with 'new' VaR Person = New Person ("Bob", "M" ); // Invoke methods like this Person. Speak (); // Alerts "Howdy, my name is Bob" See detail:

password is yyyyyyyyyyy. In this case, an IP address starting with "5" is not configured. This is the virtual IP address of the machine in the virtual LAN created by hamachi for us. 3. enable hamachi in another LAN, connect to the power, select to join the existing network, and enter the xxxxxxx password, yyyyyyyyyy, in this way, you can see your own virtual network and the computers in this network. You can use the IP address starting with 5 allocated by hamachi to directly communicate with

Http://mechanitis.blogspot.com/2011/06/dissecting-disruptor-whats-so-special.html author is Trisha Gee, a female engineer at Lmax. Recently we open-source Lmax disruptor, which is the key to making our transaction process so fast. Why open source? Because we are aware that there is something wrong with the traditional perception of high-performance programming. We have found a better and faster way to share data between threads. If we don't share it

. it's not a conspiracy to keep the TPL folks down, trust me Learn more Attributes of these features are supported ented on http://silverlight.net/learnvia an increasing number of tutorials. In addition to that, if you're looking for a one-stop shop for learning Silverlight 5, consider my book Silverlight 5 in action, to be released in print near the end of this year. it's currently in meap, with purchasers able to download chapters as I make them available. Http://10rem.net/blog/2011/

Still hungry and unsutisfied, you is looking for more. Some more, unique un heard dishes. Then you can find the it your self. Its he Dish. He has his own website which are he describes as "a social home for each of our passions". The link to He website is on his Google + page. Whats the name of his site. By the the-the-loves and hogs on "Onion kheer". Have you heard of "Onion Kheer"?Search by Google: A social home for every of our passions, arrive at

wonderful answers on StackOverflow,Http://stackoverflow.com/questions/6771258/whats-the-difference-if-meta-http-equiv-x-ua-compatible-content-ie-edge-eI've added a sentence.And then we can.The kernel controls meta tags, because the current domestic mainstream browser is dual core, so add meta tag to tell the browser what kernel to use to render the page4.IE8 does not support several properties of containerIE8 does not fully support Box-sizing:border-

(data); - } the - //called when a previously created loader is reset, making the data unavailable - Public voidOnloaderreset (loaderloader) { - //This was called when the last Cursor provided to onloadfinished () + //Above is on to being closed. We need to make sure we is no - //longer using it. +Madapter.swapcursor (NULL);Reference: http://stackoverflow.com/questions/11093380/ What-to-set-cursoradaptercontext-context-cursor-c-int-flags-to-in-order-to-mhttp://www.blogc.at/2014/03/03/swapcurso

://stackoverflow.com/questions/6771258/whats-the-difference-if-meta-http-equiv-x-ua-compatible-content-ie-edge-eI've added a sentence.And then we can.The kernel controls meta tags, because the current domestic mainstream browser is dual core, so add meta tag to tell the browser what kernel to use to render the page4.IE8 does not support several properties of containerIE8 does not fully support Box-sizing:border-box and Min-width, Max-width, Min-height

Http://stackoverflow.com/questions/7596364/whats-the-difference-between-cancelbubble-and-stoppropagationConclusion:Cancelbubble is a Boolean-type property (non-method) that IE8 and the following browsers block bubbles, and stoppropagation () is another standard browser and IEversion 9 and above IE browsera way to block bubblescancelbubble non-standard, will gradually be eliminated, so advocated the use of stoppropagation () method, and cancelbubble on

, see the wonderful answers on StackOverflow,Http://stackoverflow.com/questions/6771258/whats-the-difference-if-meta-http-equiv-x-ua-compatible-content-ie-edge-eI've added a sentence.And then we can.The kernel controls meta tags, because the current domestic mainstream browser is dual core, so add meta tag to tell the browser what kernel to use to render the page4.IE8 does not support several properties of containerIE8 does not fully support Box-sizin

issues, see note 1 link)The next time you log in, you get root access.Note:1. Security issuespermituserenvironment ~/.ssh/environment ~/.ssh/authorized_keys environment= The default value is "no". Set to "Yes" may cause users to have the opportunity to bypass access control using certain mechanisms (such as ld_preload)Reference Connection http://www.2cto.com/os/201401/272738.html Http://serverfault.com/questions/527638/security-risks-of-permituserenvironment-in-ssh

You want to duplicate the behavior of a old HP calculator, there is both options: You write the draws the calculator's display and keys, and when the user clicks on the keys, your programs do Es what the old calculator did. This is a Simulator You get a dump of the calculator's firmware, then write a program that loads the firmware and interprets it the same t He microprocessor in the calculator did. This was an Emulator The Simulator tries to duplicate the behavior of the device.The

How do you choose the usual Between the outer key and the table link Reply content: How do you choose the usualBetween the outer key and the table link Look at the situation, for example, you have a table to store product data, another table for the product type, this time with foreign keys and nothingIf you have a table that holds order data, another table that stores customer information, a table that stores product information, and a table that stores information about the store, then

16 Best Tutorials for learning web development technologies websites and blogs : http://bbs.html5cn.org/thread-8886-1-1.html Online Editor: http://jsbin.com/http://runjs.cn/available Google search URLs: Https://github.com/greatfire/wiki http://www.xiexingwen.com/Super Marker (online diagram tool): http://barretlee.github.io/SuperMarker/index_cn.htmlD3 (powerful visual data JS Library): http://d3js.org/Echarts (pure JavaScript Chart Library): http://echarts.baidu.com/doc/doc.htmlAli official vect

Http://www.discuz.net/viewthread.php? Tid43133 sidG4jizDNovember18, 2003 MySQLsQueryCacheByIanGilfillanAtypicalscenarioBoss: Ournewwebsiteiscrawling! Howcanitbe, weha http://www.discuz.net/viewthread.php?tid=43137sid=G4jizDNovember 18,200 3 MySQLs Query CacheBy Ian GilfillanA typical scenarioBoss: Our new website is crawler! How can it be, we have four state-of-the-art web servers-whats the problem? You: Well, the web servers are fine-its the databa

libraries. higher level makefiles specify the services they want. when the libraries for a service change only the lower level makefiles will have to change. keep a Repository Most companies have no idea what code they have. and most programmers still dont communicate what they have done or ask for what currently exists. the solution is to keep a repository of whats available. in an ideal world a programmer cocould go to a web page, browse or search

multiple search-replace operations within the global scope of the target object, you can use the parameter "g", that is, s/love/lust/g. In addition, if we do not need to restrict the matching case format, we can use the parameter "I ". For example, M/JewEL/I The above regular expression will match jewel, Jewel, or JEWEL in the target object. In Perl, the special operator "= ~" is used ~" Specifies the matching object of the regular expression. For example: $ Flag = ~ S/abc/ABC/ The above regula

, the load failure is displayed. The statistical data above shows that the same behavior in Chrome, FF, and IE is loaded with invalid Datauri Scheme. The delay is also relatively short and stable. So jsdeffered uses this approach to speed up asynchronous execution!Iv. SummaryThis is only the IMG element loading HTTP, JavaScript and data URI scheme, and so on, coupled with experimental methods and other issues, inevitably lead to statistical data is not comprehensive, if there is a mistak