Question on converting array into sub-arrays

Question

Given an array {"a","b","c","d","e","f", "g","h","i"} Is there a way to convert it to an equal size sub-arrays as follows (say by specifying 3 in this case): {{"a","b","c"}, {"d","e","f"}, {"g","h","i"}} 
 OriginalPostID-227719 
 OriginalPostID-227719

Gregor Gisler-Merz · Answer

Use the following code snippet. Just add a arbitrary array and define the split size. Comes in extremely handy if you have massive data to tackle and want to save memory. 
 
load( 
 local!loops: tointeger(length(ri!Ids)/10)+1, 
 local!indexIndicator: (enumerate(local!loops)+1)*10, 
 
 a!forEach( 
 local!indexIndicator, 
 with( 
 local!lowerIndex:fv!item-10, 
 local!upperIndex:fv!item, 
 a!forEach(ri!Ids, 
 if(and(fv!index>local!lowerIndex,fv!index<=local!upperIndex), 
 fv!item, 
 {}) 
 ) 
 ) 
 ) 
)