Gets an array of Exprs representing the arguments of this Expr.
A 0-length array is returned if this Expr is a function with zero arguments, or an atomic type (integer, real, string, symbol).
This property can be expensive to call if the Expr represents a large array of integers or reals. Such data is normally held within the Expr in an efficient format, and asking for it to be "unpacked" into many individual Expr objects is costly.Expr Class | Wolfram.NETLink Namespace | Head | Part