Loopextract command
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Loopextract command

LOOPEXTRACT word-parameter-list-name INTO parameter-list ORDERED | REVERSED {
statements
}

LOOPEXTRACT group-parameter-list-name. item INTO parameter-list ORDERED | REVERSED {
statements
}

LOOPEXTRACT group-parameter-list-name INTO parameter-list {
statements
}

where parameter-list is:
word 〚word〛r

LOOPEXTRACT works in the same way as the EXTRACT command except that if there are more valid words in the input parameter-list than available output words then event processing will loop over all combinations of input words for the associated statements.

Example

CREATELIST  LIST1  FROM  GE
   ...
LOOPEXTRACT  LIST1.E2  INTO  A B
    {
    INC MAT2(A,B)
    INC MAT2(B,A)
    }

So if there were 3 valid words in list LIST1, say x, y and z, then LOOPEXTRACT would be executed for the following parameter combinations (x,y), (x,z) and (y,z).


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