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Flood Regions and Arrays
•Flood regions recognize that reducing into a specific column over specifies the situation •Need a generic column -- or a column that does not have a specific position … use ‘*’ as value
•
•region FlCol = [1..m, *];  -- Flood regions
•       FlRow = [*, 1..n];
•var   MaxCol : [FlCol] double; -- An m length col
•         Row : [FlRow] double; -- An n length row
•[1..m,*] MaxCol := max<< [1..m,1..n] A; -- Better
•
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Think of column in every position