updateCurrentMonth function
Implementation
Map<String,dynamic> updateCurrentMonth(Map<String,dynamic> currentMonth,List<Map<String,dynamic>> monthsList,String op){
int currentIndex = monthsList.indexOf(currentMonth);
if(op == 'add'){
if(currentIndex == monthsList.length - 1){
print("this is the last item");
return monthsList[0];
}
return monthsList[currentIndex + 1];
}else{
if(currentIndex == 0){
print("this is the last item");
return monthsList[monthsList.length - 1];
}
return monthsList[currentIndex - 1];
}
}