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Text.index_of

index_oftermstart case_sensitivity

Group: Values

Documentation​

Find the first index of the term in the input. Returns Nothing if the term was not found in the input. Using locate is preferred as then you can also get the length of the match which may not necessarily be equal to the length of the searched term - not only in case of regex matching but also in case insensitive mode. See the Match Length section of locate for an explanation.

Arguments​

  • term: The term to find.
  • start: The index to start searching from. If the index is negative, it is counted from the end of the vector.
  • case_sensitivity: Specifies if the text values should be compared case sensitively.

Examples​

Finding location of a substring.​

      "Hello World!".index_of "J" == Nothing
      "Hello World!".index_of "o" == 4

Remarks​

What is a Character?​

A character is defined as an Extended Grapheme Cluster, see Unicode Standard Annex 29. This is the smallest unit that still has semantic meaning in most text-processing applications.