bestbarcoder.com

Delimiters in .NET Encoding Code 128A in .NET Delimiters

Delimiters use vs .net code128 integrating topaint code 128 for .net Visual Studio .NET 2003 A character c Code 128 for .NET alled a delimiter usually marks the beginning and end of a regular expression. The delimiter is always a special character for the regular expression it delimits (that is, it does not represent itself but marks the beginning and end of the expression).

Although vim permits the use of other characters as a delimiter and grep does not use delimiters at all, the regular expressions in this appendix use a forward slash (/) as a delimiter. In some unambiguous cases, the second delimiter is not required. For example, you can sometimes omit the second delimiter when it would be followed immediately by RETURN.

. Simple Strings The most basi code 128 code set c for .NET c regular expression is a simple string that contains no special characters except the delimiters. A simple string matches only itself (Table A-1).

In the examples in this appendix, the strings that are matched are underlined and look like this.. Table A-1. Regular expression /ring/ /Thursday/ /or not/. Simple strings Matches ring Thursday or not Examples ring, spring, ringing, stringing Thursday, Thursday s or not, poor nothing Special Characters You can use s pecial characters within a regular expression to cause the regular expression to match more than one string. A regular expression that includes a. Special Characters special chara cter always matches the longest possible string, starting as far toward the beginning (left) of the line as possible.. Periods A period (.) matches any character (Table A-2)..

Table A-2. Regular expression / .alk/ /.ing/.

Periods Matches All strings c VS .NET code 128a onsisting of a SPACE followed by any character followed by alk All strings consisting of any character preceding ing. Examples will talk, may balk sing song, ping, before inglenook Brackets Brackets ( [] .net vs 2010 code128b ) define a character class1 that matches any single character within the brackets (Table A-3). If the first character following the left bracket is a caret (^), the brackets define a character class that matches any single character not within the brackets.

You can use a hyphen to indicate a range of characters. Within a character-class definition, backslashes and asterisks (described in the following sections) lose their special meanings. A right bracket (appearing as a member of the character class) can appear only as the first character following the left bracket.

A caret is special only if it is the first character following the left bracket. A dollar sign is special only if it is followed immediately by the right bracket..

Table A-3. Regular expression /[bB]ill/ /t[ aeiou].k/ /# [6 9]/ /[^a zA Z]/. Brackets Matches Member of the character class b and B followed by ill t followed by a lowercase vowel, any character, and a k # followed by a SPACE and a member of the character class 6 through 9 Any character that is not a letter (ASCII character set only). Examples bill, Bill, b illed talkative, stink, teak, tanker # 60, # 8:, get # 9 1, 7, @, ., }, Stop!. 1. GNU docume Code 128 Code Set B for .NET ntation calls these List Operators and defines Character Class operators as expressions that match a predefined group of characters, such as all numbers (page 1074).

. 1026 Appendix A Regular Expressions Asterisks An asterisk c an follow a regular expression that represents a single character (Table A-4). The asterisk represents zero or more occurrences of a match of the regular expression. An asterisk following a period matches any string of characters.

(A period matches any character, and an asterisk matches zero or more occurrences of the preceding regular expression.) A character-class definition followed by an asterisk matches any string of characters that are members of the character class..

Table A-4. Regular expression /ab*c/ /ab.*c code 128c for .NET / /t.

*ing/ /[a zA Z ]*/ /(.*)/ /([^)]*)/. Asterisks Matches a followed by Visual Studio .NET barcode 128 zero or more b s followed by ac ab followed by zero or more characters followed by c t followed by zero or more characters followed by ing A string composed only of letters and. SPACEs Examples ac, abc, abbc , debbcaabbbc abc, abxc, ab45c, xab 756.345 x cat thing, ting, I thought of going 1. any string without numbers or punctuation! Get (this) and (that); (this), Get (this and that).

As long a str .NET barcode code 128 ing as possible between ( and ) The shortest string possible that starts with ( and ends with ).
Copyright © bestbarcoder.com . All rights reserved.