StringCases["string", patt]
gives a list of the substrings in 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", {p1, p2, ...}]
gives substrings that match any of the .

StringCases[{s1, s2, ...}, p]
gives the list of results for each of the .

Details and OptionsDetails and Options

  • String expressions can contain any of the objects specified in the notes for StringExpression.
  • 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 lowercase and uppercase 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.
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