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List.index_of

index_ofconditionstart

Group: Values

Documentation​

Returns the index of the element in the list. Returns Nothing if the element is not found.

Arguments​

  • condition: Either the element to search for, a Filter_Condition or a predicate function to test each element.
  • start: The index to start searching from. If the index is negative, it is counted from the end of the list.

Examples​

Finding a first element of the vector that is larger than 3.​

      [1, 2, 3, 4, 5].find (> 3)