Go - Slices -1

• Slice is declared as "var s []T"
• Declare a slice by make([]int,length,capacity)
• Slice looks like an array without size
• Pointer: point to the first element of an array that is reachable through a slice
• Length: the number of a slice. Length can't bigger than capacity
• Capacity: the number between syart of slice and ent of the underlying array.
  
• Multiple slices can share the same underlying array, may refer to overlapping parts of that array
  
• Slice can be extended, but can not exceed capacity