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Q: what is gypsum
A: Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O.
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Asked 2/11/2008 2:50:44 PM
Updated 6/17/2014 5:33:26 AM
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Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O.
Added 6/17/2014 5:33:26 AM
This answer has been confirmed as correct and helpful.
Confirmed by selymi [6/17/2014 5:35:37 AM]
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what is regex
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Updated 6/1/2014 12:12:05 AM
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In theoretical computer science and formal language theory, a regular expression (abbreviated regex or regexp) is a sequence of characters that forms a search pattern, mainly for use in pattern matching with strings, or string matching, i.e. "find and replace"-like operations.
Added 6/1/2014 12:12:05 AM
This answer has been confirmed as correct and helpful.
Confirmed by Janet17 [6/17/2014 5:37:32 AM]
what are regular expressions
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Updated 10/13/2015 12:03:02 PM
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A regular expression (regex or regexp for short) is a special text string for describing a search pattern.
Added 10/13/2015 12:03:02 PM
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