I have CSV string like HK1, Hk2, Hk3......, SG1, SG2 & so on. depending on size of list I need to call REST call to back end system but problem is that, back end system wants multiple calls if String is too long, like if String have 8 values then divide in 2 calls.
So we decided to use flatMap in play framework, our problem is that string is dyanmic some time it have 10 values sometime 20 sometime 25, in this case how to use flatMap.
I can devide the list in multiple of 4 but how we need to call flatMap dynamically so that all sublist cover.