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1. How to use a duplicate number in Word
In word, we can place a duplicate number on the toolbar. Open the "tool-custom" Command Option and open the "Custom" dialog box. Select "All commands" in the "category" column under the "command" tab.. All
Friends who often do word processing will not reject the higher, faster and stronger experience that Word2003 brings to us, so let's see what practical tips don't get your attention. Some people say, "Lose" can be a coincidence, but some skills,
Basic knowledge
CharacterPOSIX Extended Regular Expression functionsPerl-compatible Regular expression functionsFrom the message verification.
The format of the message:
Tenssun@163.com
Where Tenssun is the user name, 163.com is the server name
CSS Text properties Define the appearance of text.With text properties, you can change the color of the text, the spacing of characters, the alignment text, the decoration, the indentation of the text, and so on.Indent textIndents the first line of
Mode 1//set Cookiefunction setcookie (name, value)//two parameters, one is the name of the cookie, one is the value { var days = 30;//This cookie will be saved for 30 day var E XP = new Date (); New Date ("December, 9998"); Exp.settime
PHP Date-time function date ()1, year-month-day
Copy Code code as follows:
echo Date (' y-m-j ');
2007-02-6
echo Date (' y-n-j ');
07-2-6
Capital Y represents a four-digit year, while lowercase y represents a
1. Variables and data types
1.1 Variables
1. Each variable stores a value-the information associated with the variable.
2. A variable can be not only an integer or a floating-point number, but also a string, which can be any data type.
Naming and
1. Statements and statement blocksStatement: Java is a delimiter, and each sentence with a delimiter is a statement.Statement BLOCK: The collection of statements inside the {}.2. NotesA.//single-line commentB./* Multiline Comment */c./** Document
1: "Byte" is byte, "bit" is bit;2:1 byte = 8 bit;Char is 2 bytes in Java. Java uses unicode,2 bytes (16 bits) to represent one character.ButString str = "compilation";byte[] bytes = Str.getbytes (); I wonder why it takes 3 bytes here?3 byte is 3*8=24
MapReduce and Spark compare the current big data processing can be divided into the following three types:1, complex Batch data processing (Batch data processing), the usual time span of 10 minutes to a few hours;2, based on the historical Data
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