As shown in the Reddit recommendation article. The followingCodeRun in the CMD window. If running in bash, single quotes and double quotation marks must be reversed.
Perl
-
Wle
"
Print 'prime 'if (1 X shift )!~ /^ 1? $ | ^ (11 + ?) \ 1 + $/
Str. Split andRegEx. Split. In my experience, it is a simple replacement of a single string, directly using a string. split ('single string'). Replace multiple strings with RegEx. split (string, @ "multiple strings ",Regexoptions. ignorecase). Here
C # regular expression,For a while, regular expression learning was very popular. At that time, I could see several regular expression posts in one day at CSDN, during that time, I learned some basic knowledge through the C # string and regular
For a while, regular expression learning was very popular. At that time, I could see several regular expression posts in one day at csdn, during that time, I learned some basic knowledge through the C # string and regular expression reference manual
For a while, regular expression learning was very popular. At that time, I could see several regular expression posts in one day at csdn, during that time, I learned some basic knowledge through the C # string and regular expression reference manual
Transferred from: http://www.cnblogs.com/KissKnife/archive/2008/03/23/1118423.htmlAlso recommended is an article on regular expressions: http://www.unibetter.com/deerchao/zhengzhe-biaodashi-jiaocheng-se.htm(1) "@" symbol"@" means that the string
1, IsMatch () method, the IsMatch () method is actually a return bool worthwhile method, if the test character satisfies the regular expression return true otherwise returns false.
Example:
Match the regular expression, minus @ does not affect the
1 overviewThis may be a confusing, even confusing topic, but that is why the discussion is necessary.
In regular, some characters that have special meaning, or sequences of characters, are called Meta characters, such as "?" Indicates that the
I (pcre_caseless)If this modifier is set , the letters in the pattern are case insensitive and match . m (pcre_multiline)By default, pcre that the target string is made up of one-line characters(However, it may actually contain multiple lines),
Data insertion, deletion, and other operations are often used in projects. Sometimes the data returned by the server is enclosed in Chinese single quotes. Therefore, direct insertion reports a syntax error. There are two solutions:
First:
Replace
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