/// <summary>Returns first days in range.</summary>
/// <param name="range">The date range.</param>
/// <returns>First days of months in range</returns>
public static IEnumerable <DateTime> DaysBetween(this Range <DateTime> range)
{
range = range.MakeInclusive();
if (range.IsEmpty)
{
yield break;
}
var startDate = range.FromValue;
var endDate = range.ToValue;
while (startDate <= endDate)
{
yield return(startDate);
startDate = startDate.NextDay();
}
}
/// <summary>Returns first days of years in range.</summary>
/// <param name="range">The date range.</param>
/// <returns>First days of years in range</returns>
public static IEnumerable <DateTime> YearsBetween(this Range <DateTime> range)
{
range = range.MakeInclusive();
if (range.IsEmpty)
{
yield break;
}
var startDate = range.FromValue.FirstDayOfYear();
var endDate = range.ToValue;
// if range.FromValue is not first date of year, the years is skipped.
if (startDate < range.FromValue)
{
startDate = startDate.NextYear();
}
while (startDate <= endDate)
{
yield return(startDate);
startDate = startDate.NextYear();
}
}
/// <summary>Returns delta between two dates measured in months.</summary>
/// <param name="range">The date range.</param>
/// <returns>Delta between two dates measured in months.</returns>
public static int DifferenceInMonths(this Range <DateTime> range)
{
range = range.MakeInclusive();
return(DifferenceInMonths(range.FromValue, range.ToValue));
}
/// <summary>Replaces exclusive boundaries with inclusive ones.</summary> /// <param name="range">The date range.</param> /// <returns>A range with inclusive boundaries.</returns> public static Range <DateTime> MakeInclusive(this Range <DateTime> range) => range.MakeInclusive(d => d.NextDay(), d => d.PrevDay());