Methods and comments for strings
Capitalize ()
Change the first character of a string to uppercase
Casefold ()
Change all characters of the entire string to lowercase
Center (width)
Centers
Python escape characterPython uses a backslash (\) to escape characters when special characters are needed in characters. As the following table:
Escape Character
Description
\ (at end of line)
Line
Capitalize ()
Change the first character of a string to uppercase
Casefold ()
Change all characters of the entire string to lowercase
Center (width)
Centers the string and fills the new string with a space
One, parenthesis, parentheses ()1, single parenthesis ()① Command group . The commands in parentheses will be executed in a new sub-shell sequence, so the variables in parentheses cannot be used by the rest of the script. Multiple commands in
The string is the most commonly used data type in Python. We can use quotation marks (' or ') to create a string.Creating a string is simple, as long as you assign a value to the variable. Var1 = ' Hello world! ' var2 = "Python runoob" Python
Capitalize ()
Change the first character of a string to uppercase
Casefold ()
Change all characters of the entire string to lowercase
Center (width)
Centers the string and fills the new string with a space
A string is ‘ any text enclosed in single or double quotation marks " , such as ‘abc‘ , and "123" so on.Note that ‘‘ or "" itself is just a representation, not part of a string, so the string is ‘abc‘ only a , b c this 3 characters. If it ‘ is also
A data table is made up of multiple columns, and you must specify the data type of each column when you create the table. The following is a list of usage rules for common SQL Server data types .
Integer type
Int
The
We recommend that you use sp_executesql instead of EXECUTE statements to EXECUTE strings. Support Parameter replacement not only makes sp_executesql more common than EXECUTE, but also makes sp_executesql more effective because the execution plan it
1. Formatted currency (related to system environment, Chinese system default format RMB, English system format USD)String. Format ("{0:c}", 0.2) results are: ¥0.20 (English operating system results: $0.20)The default formatting retains two decimal
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Data Structure string of typical programming questions
A string is a sequence of several characters. Because strings are frequently used for programming, many languages have made special rules on strings for optimization. The following describes the
PythonstringThe string is the most commonly used data type in Python. We can use quotation marks to create strings.Creating a string is simple, as long as you assign a value to the variable. For example:=' Hello world! ' ="Python programming"
Sass BASICS (IV) and sass Basics
When you want to set the attribute value, you can use a string to insert it. Another usage is to build a selector.@ Mixin generate-sizes ($ class, $ small, $ medium, $ big ){. # {$ Class}-small {font-size: $ small ;}.
RecommendedSp_executesqlInstead of using the execute statement to execute a string. Support Parameter replacement not onlySp_executesql More common than execute, and also makeSp_executesqlIt is more effective because the execution plan generated by
Turn http://kwon.iteye.com/blog/1068255 http://blog.csdn.net/tvvbbb/article/details/47256943public static string decimaltostring (decimal D){Return d.tostring ("#0. ######");}This display is very simple to a few examples to understand, notice the
"Turn" http://blog.csdn.net/samsone/article/details/75567811. Formatted currency (related to system environment, Chinese system default format RMB, English system format USD)String. Format ("{0:c}", 0.2) results are: ¥0.20 (English operating system
Upload the file email. php and emailclass. php to the same directory, and create a subdirectory temp under this directory. set the permission to 0777, and execute email. php to send an email. This emailclass. php function is already quite complete. 1
String. Several definitions of the Format method:String.Format (String, Object) replaces the format item in the specified String with the text equivalent of the value of the specified Object instance.String.Format (String, object[]) replaces the
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