The difference and meaning of/i,/g,/ig,/gi,/m in regular expressions, Iggi
The difference and meaning of/i,/g,/ig,/gi,/m in regular expressions
/I (Ignore case)/g (full-text lookup occurrences of all matching characters)/m (Multi-line lookup)/gi (full-text lookup, ignore case)/ig (full-text lookup, ignore case)
http://www.bkjia.com/PHPjc/1077539.html www.bkjia.com true http://www.bkjia.com/PHPjc/10
"Statement" The content of this post is copy, the source is the stack overflow.It has several meanings in Scala and all related to its mathematical meaning as implication.
In a value, it introduces a function literal, or lambda. e.g. the bit inside the curly braces inList(1,2,3).map { (x: Int) => x * 2 }
In a type, with symbols on both sides of the arrow (e.g. a = t , (b) + t , (a,b,c) = + T , etc.) It's sugar for function, that's, A Funct
An error occurred while reading a regular expression on the webpage. Let's take a look at the error. It is best to explain the meaning of each symbol. I am learning an example of a regular expression on the webpage, and an error has occurred. Let's take a look at the error. It is best to explain the meaning of each symbol. the div tag is being extracted and the content with the ID of PostContent is stored i
The meaning of the DiscuzX-custom function lies in getgpc () in function_core.php. what is the meaning of this function? Why use this function to obtain form parameters? Thank you ------ solution ------------------ In my opinion, it is mainly convenient to get variables that may be uncertain for get or post! Because $ _ REQUEST is not good ------ solution -------------- DiscuzX-
Perhaps read too many successful books, perhaps is surrounded by too many successful people, so that everyone is selling pointed head to the success of drilling, they unscrupulous, hard work, the steal, hardships to torture themselves desperately, just to let themselves in the community, get more names, get more benefit.If you think about it, the life of man is like a bucket to history, and our so-called glorious life is like a blip. There are so many great men in history who remember their name
Since high school has been thinking about the meaning of the so-called life, then came to the conclusion that it is not too late to go to college. Then I went to college in a strange sense.Actually thought before, but did not draw any conclusion, now think, this did not draw any conclusion is correct.Because for me personally, life has no meaning, often hanging in the mouth of the realization of life goals,
Parse the meaning of the XHProf Report field and the xhprof Report field. Parse the meaning of the XHProf Report field. the xhprof Report field FunctionName: method name. Cils: the number of times a method is called. Cils %: number of methods called at the same level of the total number of methods called XHProf resolution of the meaning of the reported field, xhp
PHP common error hint meaning explanation (practical!) Worth collecting), error tips worth collecting
This article explains the meaning of common PHP error hints. Share to everyone for your reference, as follows:
In the learning of PHP, often encountered a variety of error hints, today see this error hints and explanations feel very good, now turn around, for us to learn. Oh.....
1. notice:undefined variab
November, the winter solar term is just the relay stage of autumn and winter, the intensity of Siberian cold and Mongolian high pressure is obviously strengthened, and the cold front is the vanguard force, which affects most parts of our country. At this time the cold air brings us the weather feeling, in the normal year, is no longer the autumn wind send cool, but with the winter significance of the wind cooling. But if the climate is warmer, this season of transition, the intensity of cold air
Today in doing JMeter stress test also appeared before the usual anomalies, such as, for a long time do not get this, and a little overwhelmed, so simply to summarize the problem:I have written two articles before, and have studied this question, see the following connection:Connection 1:http://www.cnblogs.com/garinzhang/archive/2013/03/20/2970901.htmlConnection 2:http://www.cnblogs.com/garinzhang/p/jvisualvm_resolve_permgen_space.htmlThis time in the online search, want to completely solve this
The meaning of volatile is "volatile, easy to change". The meaning of this qualifier is to indicate to the compiler that the contents of a variable may change as a result of another program's modification. Usually when a variable is declared in a program, the compiler tries to store it in a general-purpose register, such as EBX. When the CPU puts its value in the EBX, it will no longer care about the value
The meaning of void
Void is "no type" and void * is "no type pointer" and can point to any data type.void specification for use of pointersThe ①void pointer can point to any type of data, that is, the null pointer is assigned to a pointer of any data type. For example:int * PINT;void *pvoid;PVOID = pint; * * But can not pint= pvoid; */If you want to assign pvoid to other types of pointers, you need to force type conversions such as: pint= (int
Label: This paper first introduces the meaning of Ken_len in the query plan of MySQL, then introduces the calculation method of Key_len, and finally, through a fake example, shows how to see how many columns of the federated index are used by Key_len.The meaning of Key_lenIn MySQL, you can view the path to the SQL statement through explain, as shown here:
Mysql> CREATE TABLE t (a int primary key,
working directory, and the role of her and the built-in command pwd is the same.# echo ~+/var/log~-Last working directoryThis symbol represents the last working directory.# echo ~-/etc/httpd/logs; Semicolon (Command separator)In the shell, the symbol that functions as a "continuous instruction" is the semicolon. such as the following exampleCD ~/backup; mkdir startup; CP ~/.* startup/.;; Continuous semicolon (Terminator)Dedicated in case options, assume the role of Terminator.Case ' $fop ' inHe
In pom4, the scope element is introduced into the dependency element, which is a very important attribute. In Maven projects, jar package conflicts and type conversion exceptions are caused by improper use of scope elements.The role of the scope element: controls the scope of use of the dependency element. In general, it is to control the scope in which jar packages are loaded and used.Scope contains five values, which are described as follows:Compile (Compilation)
leads to Frankel's most important point in this book: what is the meaning of life and what is the meaning of living. In practicing medicine, Frankel often asks patients who have undergone great pain: "Why don't you kill yourself?" "Now that you can sit in a clinic in Frankel, these people are certainly overcoming the difficulties they face in their lives and can answer his questions." Some people say that
the profound meaning of the C-language void keyword1. Overview This article explains the deep meaning of the void keyword and details the use and techniques of void and void pointer types. 2The meaning of void is literally "untyped",void* is "no type pointer",void*can point to any type of data. Void is almost only "annotated" and restricts the function of the pro
Php + ajax + json provincial/municipal drop-down lists are linked. json transmission is used to verify that parameters are transmitted during login.The following code is reserved as a mark:Function (data ){// Alert (data );Var data1 = data. replace (/\ s/gm ,"");Var data2 = data. match (/\ [(. *) \]/g ,"");// Alert (data2 );.............}The key is to understand the differences between the following pattern modifiers: www.2cto.comPerl-style Regular Expressions allow you to place a single charact
What is the meaning of the character icon on the Win10 disk? How can I disable win10 disk sharing ?, Win10 icon
What is the meaning of the character icon on the Win10 disk? How can I disable win10 disk sharing? In the disk location of the Windows 10 system, we can see two icons of small people. This indicates that the current disk is in the shared state, and other users can access the current disk through
In the C language, for definitions and declarations, perhaps we are very familiar with, but not necessarily really understand!Definition means: The definition is to create a (compiler) an object, to allocate a memory space for this object and name, that is, the name of the variable or object that we normally call, once this is a memory space match, then in the definition of this object or variable life cycle, The variable name created cannot be changed, and the location of the memory space will
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