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Parsing $USD from text


fildawg

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Try browsing this site - [url=http://regexlib.com/DisplayPatterns.aspx?cattabindex=2&categoryId=3]http://regexlib.com/DisplayPatterns.aspx?cattabindex=2&categoryId=3[/url] as they have a number of regular expressions already built, tested and commented.  On the bottom of the page linked above, there is a regex that should do what you want:

(?n:(^\$?(?!0,?\d)\d{1,3}(?=(?<1>,)|(?<1>))(\k<1>\d{3})*(\.\d\d)?)$)

or, another one I found:

^(\$)?((\d+)|(\d{1,3})(\,\d{3})*)(\.\d{2,})?$

check the site to read the descriptions of what each does.
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