Hi, I am new to appian, how to duplicate this Java loop into Sail Expression?

Question

positionCollect[] = {1,2,3,4,5,6,7,8,9,10};

for (int i = 0; i < positionCollect.size(); i=i+2) { polygon[i/2] = new Point(positionCollect.get(i), positionCollect.get(i+1)); }

polygon is a Point Class type list, the Point class has two value x and y. 
 So basically I am using 10 numbers from List, create 5 object point (CDT) , and put into list polygon. 
 I am pretty new to appian I don't know expression rule can do the same thing? And unfortunately I can't use java plug-in to finished this so I have to write expression rules...

Danny Verb · Accepted Answer

a!localVariables(
 local!positionCollect: {1,2,3,4,5,6,7,8,9,10},
 local!polygonList: a!forEach(
 enumerate(length(local!positionCollect)/2)+1,
 type!Point(
 x: local!positionCollect[(fv!index*2)-1],
 y: local!positionCollect[(fv!index*2)]
 )
 ),
 local!polygonList
) 
 In Appian all functions and rules will return a value. In the code above, I have a list of positions defined as a list and then a polygonList which calls a!forEach() which will return a list. Also, the code above will only work if your positionCollect list is even.

Hi, I am new to appian, how to duplicate this Java loop into Sail Expression?

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