How to keep the delimiters of Regex.Split?

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Just put the pattern into a capture-group, and the matches will also be included in the result.

string[] result = Regex.Split("123.456.789", @"(\.)");

Result:

{ "123", ".", "456", ".", "789" }

This also works for many other languages:

  • JavaScript: "123.456.789".split(/(\.)/g)
  • Python: re.split(r"(\.)", "123.456.789")
  • Perl: split(/(\.)/g, "123.456.789")

(Not Java though)

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