/// <summary>
/// Returns a new Query representing the original elements but in reverse order.
///
/// For example:
/// (1, 2, 3).Query().Reverse()
/// Would result in:
/// (3, 2, 1)
/// </summary>
public static Query <T> Reverse <T>(this Query <T> query)
{
T[] array;
int count;
query.Deconstruct(out array, out count);
KhalreonUtility.Reverse(array, 0, count);
return(new Query <T>(array, count));
}
/// <summary>
/// Returns a new Query with the elements of the original query in reverse sorted order.
/// </summary>
public static Query <T> SortDescending <T>(this Query <T> query) where T : IComparable <T>
{
T[] array;
int count;
query.Deconstruct(out array, out count);
Array.Sort(array, 0, count);
KhalreonUtility.Reverse(array, 0, count);
return(new Query <T>(array, count));
}
/// <summary>
/// Returns a Query containing integers that range from one value to another. You can
/// optionally specify the step to used when moving along the range, as well as specifying
/// whether or not the final value of the range should be included or not.
///
/// For Example:
/// Range(0, 10) = 0,1,2,3,4,5,6,7,8,9
/// Range(0, 10, 2) = 0,2,4,6,8
/// Range(0, 10, 2, false) = 0,2,4,6,8,10
/// Range(10, 0) = 10,9,8,7,6,5,4,3,2,1
/// Range(-1,1,false) = -1,0,1
/// </summary>
public static Query <int> Range(int from, int to, int step = 1, bool endIsExclusive = true)
{
if (step <= 0)
{
throw new ArgumentException("Step must be positive and non-zero.");
}
List <int> values = LightPool <List <int> > .Spawn();
try
{
int value = from;
int sign = KhalreonUtility.Sign(to - from);
if (sign != 0)
{
while (KhalreonUtility.Sign(to - value) == sign)
{
values.Add(value);
value += step * sign;
}
}
if (!endIsExclusive && value == to)
{
values.Add(to);
}
return(new Query <int>(values));
}
finally
{
values.Clear();
LightPool <List <int> > .Recycle(values);
}
}
