Wolfram Language & System 10.0 (2014)|Legacy Documentation

This is documentation for an earlier version of the Wolfram Language.View current documentation (Version 11.2)


splits into a list of substrings separated by whitespace.

splits into substrings separated by delimiters matching the string expression patt.

splits at any of the .

inserts val at the position of each delimiter.

inserts at the position of each delimiter .

splits into at most n substrings.

gives the list of results for each of the .

Details and OptionsDetails and Options

  • StringSplit[s] does not return the whitespace characters that delimit the substrings it returns.
  • Whitespace includes any number of spaces, tabs, and newlines.
  • The string expression patt can contain any of the objects specified in the notes for StringExpression.
  • StringSplit[s] is equivalent to StringSplit[s,Whitespace].
  • If s contains two adjacent delimiters, StringSplit considers there to be a zerolength substring between them.
  • StringSplit[s,patt] by default gives the list of substrings of s that occur between delimiters defined by patt; it does not include the delimiters themselves.
  • StringSplit[s,patt->val] includes val at the position of each delimiter.
  • StringSplit[s,patt:>val] evaluates val only when the pattern is found.
  • StringSplit["string",{p1->v1,,pa,}] includes at the position of delimiters matching , but omits delimiters matching .
  • By default, StringSplit[s,patt] drops zerolength substrings associated with delimiters that appear at the beginning or end of s.
  • StringSplit[s,patt,All] returns all substrings, including zerolength ones at the beginning or end.
  • Setting the option IgnoreCase->True makes StringSplit treat lowercase and uppercase letters as equivalent.
  • StringSplit["string",RegularExpression["regex"]] splits at delimiters matching the specified regular expression.
Introduced in 2004