public RangeEnumerator([NotNull] IEnumerable <T> enumerable)
{
bool assigned = false;
if (enumerable is IList <T> sourceList)
{
if (sourceList.Count > 0)
{
Minimum = sourceList[0];
Maximum = sourceList[sourceList.Count - 1];
assigned = true;
}
}
else
{
using (IEnumerator <T> enumerator = enumerable.GetEnumerator())
{
if (enumerator.MoveNext())
{
Minimum = enumerator.Current;
do
{
Maximum = enumerator.Current;
}while (enumerator.MoveNext());
assigned = true;
}
}
}
if (!assigned)
{
Minimum = Maximum = default(T);
IsIterable = false;
}
else
{
IsIterable = Minimum.IsLessThanOrEqual(Maximum);
}
}
public RangeLister(T minimum, T maximum)
{
Minimum = minimum;
Maximum = maximum;
IsIterable = Minimum.IsLessThanOrEqual(Maximum);
}
