Hi,

many OPL users asked me about range arrays.

They want to write something like

{string} centuries={"XIX","XX"};

range years[centuries]=[1800..1899,1900..1999];

execute
{
writeln(years);
}

But with CPLEX 12.9 that's not allowed and you get an error.

Instead you could write

{string} centuries={"XIX","XX"};

int yearsLB[centuries]=[1800,1900];
int yearsUB[centuries]=[1899,1999];

execute
{
for(var i in centuries) writeln(i, " : from ",yearsLB[i], " to ",yearsUB[i]);
}

which gives

XIX : from 1800 to 1899
XX : from 1900 to 1999

regards