Regular Expressions
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Go to this page Regular Expressions
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A Regular Expression is a compact way to express a text search or replacement. | A Regular Expression is a compact way to express a text search or replacement. | ||
| - | Regular expression calculator: [http://www.homemarketeer.com/sbs/regular_expression.html Regular Expression Calculator] | + | * Regular expression calculator: [http://www.homemarketeer.com/sbs/regular_expression.html Regular Expression Calculator] |
| - | Regular expression | + | * Regular expression text calculator: [http://www.homemarketeer.com/tools/text_processor Regular Expression Text Processor] |
| + | * Regular expression information: [http://www.homemarketeer.com/sbs/regexp.htm Regular Expression Information] | ||
| - | A Regular Expression is a search | + | * Using Regular Expressions in PeopleSoft - [[PeopleSoft Regular Expressions]] |
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| + | [[Regular Expression Examples]] | ||
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| + | ==About Regular Expressions == | ||
| + | A Regular Expression is a compact way of expressing patterns to search for and, optionally, a replace. It started life within Unix grep, but has now been implemented in many different technologies, for example: | ||
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| + | Languages: AWK, Perl, Java, JavaScript | ||
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| + | Text Editors: TextPad, UltraEdit | ||
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| + | Over the years, there have been extensions to the Regular Expression syntax, but there is a core which all implementations accept. | ||
==Search String Rules== | ==Search String Rules== | ||
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(ab|cd) - matches ab or cd | (ab|cd) - matches ab or cd | ||
| - | * - matches zero or any number of the previous character/expression | + | <nowiki>* - matches zero or any number of the previous character/expression</nowiki> |
+ - matches one or more of the previous character/expression | + - matches one or more of the previous character/expression | ||
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& - replace with entire matched string | & - replace with entire matched string | ||
| - | $1 ... $ | + | $1 ... $99 - replace with first ... ninety-ninth matched bracketed () expression (provided there are that many in the match expression) |
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| + | ==Other Links== | ||
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| + | [[NI Number Validation]] | ||
