ASPL Guide to Operations v 1.00
© 2024 by SetSphere.COM


4. 10
   dD gets the subgroups symmetric difference

 

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dD a1 a2 [a3 .. aN]       where a1 a2 [a3 .. aN] are set variables

dD`mtm~ a1 a2 [a3 .. aN]

dD/mtm~ a1 a2 [a3 .. aN]

dD

When specified by itself then the operation is performed on the object on top of the stack and the one that is one below it, then the result is pushed on the stack

setop  setoid  2*  notcommu        ins:H_H_H  ous:H_H_H

●  Operator dD gets the subgroups symmetric difference

Use the operator dD to get the symmetric difference of subgroups between datasets represented by set variables.

 

dD EXAMPLE
In the following example we want to visualize the subdirectories contained in each directory without being found in any other directory. We start ASPL loading the sample workspace WS1 and issue the command dD on the set variables.

 

dD OPERATION

# aspl WS1
    (start ASPL loading the sample workspace WS1 )

①  aspl> v
    (print the symbol table showing the set variables)

②  aspl> dD a1 a2
    (get the group symmetric difference of subgroups between a1 a2)

③  aspl> dD a1 a2 a3
    (get the group symmetric difference of subgroups between a1 a2 a3)

④  aspl> dD a3 a4 a5
    (get the group symmetric difference of subgroups between a3 a4 a5)

 

● Tickable Predicates for dD

This dD is tickable with predicates that are shown in the following table:

       a yellow note
dD`_  gets the subgroups symmetric difference 
dD`mtm=  gets the subgroups symmetric difference such that they have the same make time 
dD`mtm~  gets the subgroups symmetric difference such that they have different make times 
dD`mtm~~  gets the subgroups symmetric difference such that they have all over different make times 
dD`ks=  gets the subgroups symmetric difference such that they have the same ksum 
dD`ks~  gets the subgroups symmetric difference such that they have different ksums 
dD`ks~~  gets the subgroups symmetric difference such that they have all over different ksums 
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