CADataFrame 
 
#append(name) { INSTANCE_CONTEXT }    <- any carray
#lead(name) { INSTANCE_CONTEXT }      <- any carray
#execute { INSTANCE_CONTEXT }         => any object
#select(name...) { INSTANCE_CONTEXT } <- boolean carray
#reorder { INSTANCE_CONTEXT }         <- int32 carray (addresses for mapping)
#order_by { INSTANCE_CONTEXT }        <- Array of int32 carray or carray (addresses for mapping)

#calculate {|label, column| CALLER_CONTEXT } <- scalar
#resample {|label, column| CALLER_CONTEXT }  <- any carray