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v4.0
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    v4.0

      head() | Array Head (V4.1)

       V4.1 

      Parameters, Value

      Array Head function calculates the first element of the array, i.e. the element with index 0 <array>[0].

      Syntax:

      • Format: head(<array>)
      • Parameters: see table below
      • Value: ATTR (string, number, time)
      Name Category Specification Description
      array ARRAY / Array to be calculated

      Common Usage

      Example: Find a 3-step path from Card CA002 to CA005, and return the 1st edge of the path.

      n({_id == "CA002"}).e()[3].n({_id == "CA005"}).limit(1) as p
      return head(pedges(p))
      
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