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v4.2
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    中文EN
    v4.2

      head()

      Function head() returns the first element of the array, namely, the element with index [0].

      Arguments:

      • Array <array>

      Returns:

      • First element <string>

      Constant

      Example: Return the 1st element of array [[1,2,3],[4,5,6]]

      return head([[1,2,3],[4,5,6]])
      

      Function

      Example: Return the 1st element of each array in an array list

      uncollect [[1,2,3],[4,5,6]] as a
      return head(collect(a))
      

      Alias

      Example: Return the 1st element of each array in an array list

      uncollect [[1,2,3],[4,5,6]] as a
      return head(a)
      
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