StringCases
 Usage
• StringCases["string", patt] gives a list of the substrings in "string" that match the string expression patt.
• StringCases["string", lhs -> rhs] gives a list of the values of rhs corresponding to the substrings that match the string expression lhs.
• StringCases["string", p, n] includes only the first n substrings that match.
• StringCases["string", { ,  , ... }] gives substrings that match any of the  .
• StringCases[{ ,  , ... }, p] gives the list of results for each of the  .
Notes
• String expressions can contain any of the objects specified in the notes for StringExpression. • Example: StringCases["abcadcacb", "a"~~_~~"c"]  . • Example: StringCases["abcadcacb", "a"~~x_~~"c" -> x] . • With the default option setting Overlaps -> False, StringCases includes only substrings that do not overlap. With Overlaps -> True it includes substrings that overlap. • With Overlaps -> All, multiple substrings that match the same string expression are all included. With Overlaps -> True, only the first such matching substring at a given position is included. • Setting the option IgnoreCase -> True makes StringCases treat lower- and upper-case letters as equivalent. • StringCases["string", RegularExpression["regex"]] gives substrings matching the specified regular expression. • StringCases[s, lhs :> rhs] evaluates rhs only when the pattern is found. • New in Version 5.1.
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