Regular Expressions - Revision history

Laura: moved Regular expressions to Regular Expressions

2013-10-16T18:44:13Z

moved Regular expressions to Regular Expressions

← Older revision	Revision as of 18:44, 16 October 2013
(No difference)

Laura at 19:51, 15 July 2013

2013-07-15T19:51:00Z

← Older revision		Revision as of 19:51, 15 July 2013
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	In computing, '''regular expressions''' provide a concise and flexible means for identifying strings of text of interest, such as particular characters, words, or patterns of characters. Regular expressions (abbreviated as '''regex''' or '''regexp''', with plural forms '''regexes''', '''regexps''', or '''regexen''') are written in a formal language that can be interpreted by a regular expression processor, a program that either serves as a parser generator or examines text and identifies parts that match the provided specification.		In computing, '''regular expressions''' provide a concise and flexible means for identifying strings of text of interest, such as particular characters, words, or patterns of characters. Regular expressions (abbreviated as '''regex''' or '''regexp''', with plural forms '''regexes''', '''regexps''', or '''regexen''') are written in a formal language that can be interpreted by a regular expression processor, a program that either serves as a parser generator or examines text and identifies parts that match the provided specification.

	Many programs support regular expression based searching. For a list of some of these programs see the [[Category:Supports Regular Expression\|Supports Regular Expressions Category]].		Many programs support regular expression based searching. For a list of some of these programs see the [[:Category:Supports Regular Expression\|Supports Regular Expressions Category]].


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	find any line that contains print and list		find any line that contains print and list
	.print.list.*		.print.list.*

			[[Category:Supports Regular Expression]]

Laura: Created page with "In computing, '''regular expressions''' provide a concise and flexible means for identifying strings of text of interest, such as particular characters, words, or patterns of ..."

2013-07-15T19:48:01Z

Created page with "In computing, '''regular expressions''' provide a concise and flexible means for identifying strings of text of interest, such as particular characters, words, or patterns of ..."

New page

In computing, '''regular expressions''' provide a concise and flexible means for identifying strings of text of interest, such as particular characters, words, or patterns of characters. Regular expressions (abbreviated as '''regex''' or '''regexp''', with plural forms '''regexes''', '''regexps''', or '''regexen''') are written in a formal language that can be interpreted by a regular expression processor, a program that either serves as a parser generator or examines text and identifies parts that match the provided specification.

Many programs support regular expression based searching. For a list of some of these programs see the [[Category:Supports Regular Expression|Supports Regular Expressions Category]].

==External Resources==
*[http://www.codeproject.com/KB/dotnet/regextutorial.aspx The 30 Minute Regex Tutorial]
*[http://en.wikipedia.org/wiki/Regular_expression Regular Expressions on wikipedia]
*[http://gskinner.com/RegExr/ RegExr: Online Regular Expression Testing Tool]

==Handy Cheat Sheet==
I've done only a little basic research with regular expressions, but this should serve as a quick start for later research.

I hope every thing shows up okay here. If not refer to [http://businessrules.jottit.com/regular_expressions the old jottit wiki].

find all whole lines that have FNNUM in them 
^.*FNNUM.*$

find all whole lines that have FNNUM$ in them 
^.*FNNUM[$].*$
or
(^.*FNNUM\$$.*$)

find all whole lines that have FNNUM$( in them 
^.*FNNUM[$]\(.*$

find all matching lines ... from the beginning to the end of FNNUM$( 
^.*FNNUM[$]\(

find all matching lines from FNNUM$( to the end of the line 
FNNUM[$]\(.*$

finds all matching FNNUM$( entries (ends at "(") 
FNNUM[$]\(.*$

find all matching FNNUM$( and the first letter after it which may be A-Z or " or ' or a-z 
FNNUM[$]\([a-zA-Z'"]

find entire FNUM$ call ... all the way to the first closing parenthesis... including A-Z, a-z,',",_,1-9, and ,(comma). 
FNNUM[$]\([a-zA-Z'"$,_1-9]*$ 
(something funny with that last one...)

find any line that contains print and list
.*print.*list.*