remove whitespace

********************OS module:Os.remove () deleting filesOs.unlink () deleting filesOs.rename () Renaming filesOs.listdir () lists all files in the specified directoryOs.chdir () Change the current working directoryOS.GETCWD () Gets the current file

1 string 1.1 Subscript and slice1.2 Slices1.3 Common String OperationsIf there are strings mystr = ‘hello world itcast and itcastcpp‘ , the following are common operationsfindDetects if STR is included in MyStr, or returns 1 if the index value is

Basic data types and common methods in PythonCommon data types in Python are: string (str), list, tuple (tuple), dictionary (DITC), collection (set)(a) stringCommon methods of strings:1, index, the character of the corresponding position is output

SQL Statement Collection --statement function --data Operation SELECT--Retrieve data rows and columns from a database table INSERT--Add new data rows to a database table Delete--delete data rows from a database table UPDATE-- Update data in a

VariableThe variable name consists of a letter, a number (not the first character), an underscore, and cannot use the keywordThe following keywords cannot be declared as variable names [' and ', ' as ', ' assert ', ' Break ', ' class ', ' Continue ',

First of all, the original JS does not contain a trim () method. If you think so, it must be written in Java.The workaround is as follows:1. Use the $.trim provided by jquery ([object to manipulate]);2. Encapsulate a method to intercept the

Share some of the common functions in the PHP collection program, save the ground to find, want to come here to see, haha.//the current script URLfunctionGet_php_url () {if(!Empty($_server["Request_uri"])){ $scriptName=$_server["Request_uri"];

String output:%s print string;%d print digit;%f print decimal;%u print positive numberExample: Print ("Name:%s"%name)%2d occupies two bytes, by default right-aligned%-2d occupies two bytes, left justifiedString input:UserName = input ("Please enter

Protocol buffers is a new data interchange format proposed by Google. The English definition of it is: a language-neutral, platform-neutral, extensible way of serializing structured data for use in communications Protocols, data storage, and more.

1. Access to individual charactersIn PHP, you can use a string as an array of characters to access the string directly using an array's access method. such as $str[0].Notice here that if the character is outside of the ASCII code, there is a problem

Tag: ATI expression returns a specific square root ABS trim BCD charindex----Statistical functions----AVG--averagingCount--Number of statisticsMax--Max valueMin--Find the minimum valueSum--sum--avgUse PanguSelect AVG (e_wage) as Dept_avgwageFrom

One, Spring MVC view ParserThe workflow of the view parser is roughly the same: when a controller's method executes, it returns a view (for example: Listuser), and the job of the view parser is to find an objectTo finish rendering the view, or jump

Website performance optimization[email protected] 1.? Cache Conditional get- default comes with →if-modified-since:wed,22,2006,4:15pm ←last-modified: expires:wed,22,2006,4:15pm- need

Php//=============================== Time Date ===============================//y returns the last two digits of the year, Y year four digits, m month number, M month English. D Month Date number, D week a few English$date =Date ("y-m-d");$date

=============================== Time Date ===============================Y returns the last two digits of the year, the Y-year four digits, the M-month number, and the M-month English. D Month Date number, D week a few English$date =date

Prettify () can return a Unicode string of well-formed HTML:Markup ='i linked to example.com'Soup=BeautifulSoup (markup) soup.prettify ()#' \n \n \n \n \n ... 'Print(Soup.prettify ())######I linked to##example.com####But you just want a string

Encoding and decoding of JSON dataCode: Json.dumps ()Decoding: Json.loads ()The humanistic care of JSON1, Data sort: sort_keys=true/false (default)2, Indent display: indent=x (number of spaces)3, if it is used for network transmission, such as form

function Description Addcslashes () Returns a string that adds a backslash before the specified character. Addslashes () Returns a string that adds a backslash before a predefined character.

1. The $ () reference element through jquery includes methods such as the ID, class, element name, and the hierarchy of elements and Dom or XPath conditions, and the returned object is a JQuery object (collection Object) and cannot be called

related knowledge points for String:1.String Method of construction: String () creates an empty content string object. String (byte[] bytes) constructs a string object using a single byte arrayString (byte[] bytes, int offset, int length)Bytes: the