DateUtil (Flutter,Dart)

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I was stuck in a problem when I was write code for one of my project. The Problem was, for a given date you have to extract whole week in which the given date falls. Whole week means a list of length 7 of type DateTime. I came with the solution below.

List<DateTime> weekOfDate(DateTime date){
 print(date.weekday);
 var week = <DateTime>[];
 var suffixDays=7-date.weekday;
 var prefixDays=7-(suffixDays+1);
 for(int i=prefixDays;i>=1;i--){
 week.add(DateUtils.addDaysToDate(date, -i));
 }
 week.add(date);
 for(int i=1;i<=suffixDays;i++){
 week.add(DateUtils.addDaysToDate(date, i));
 }
 return week;
}