public static WeekDTO CreateForWeekId(int weekId)
{
return(weeksByWeekId.GetOrAdd(weekId, (id) =>
{
var candidate = new WeekDTO(WeekEpoch);
var candidateWeekId = 0;
while (candidateWeekId != weekId)
{
candidate = candidate.Next();
++candidateWeekId;
}
return candidate;
}));
}
private int GetWeekId()
{
return(weekIdsByWeek.GetOrAdd(this, (week) =>
{
var candidate = new WeekDTO(WeekEpoch);
var weekId = 0;
while (candidate != this)
{
candidate = candidate.Next();
++weekId;
}
return weekId;
}));
}