/// <summary>
/// Creates a new query that generates a sequence that contains one repeated value.
/// </summary>
/// <param name="element">The value to be repeated.</param>
/// <param name="count">The number of sequential integers to generate.</param>
/// <returns>A query that contains a repeated value.</returns>
public static IQueryExpr <IEnumerable <TResult> > Repeat <TResult>(TResult element, int count)
{
if (count < 0)
{
throw new ArgumentOutOfRangeException("count");
}
else
{
return(new QueryExpr <IEnumerable <TResult> >(QExpr.NewRepeatGenerator(Expression.Constant(element, typeof(TResult)), Expression.Constant(count))));
}
}
/// <summary>
/// Creates a new query that generates a sequence of integral numbers within a specified range.
/// </summary>
/// <param name="start">The value of the first integer in the sequence.</param>
/// <param name="count">The number of sequential integers to generate.</param>
/// <returns>A query that contains a range of sequential integral numbers.</returns>
public static IQueryExpr <IEnumerable <int> > Range(int start, int count)
{
if (count < 0 || ((long)start + (long)count) - 1L > Int64.MaxValue)
{
throw new ArgumentOutOfRangeException("count");
}
else
{
return(new QueryExpr <IEnumerable <int> >(QExpr.NewRangeGenerator(Expression.Constant(start), Expression.Constant(count))));
}
}
/// <summary>
/// Creates a query that applies a specified function to the corresponding elements of two sequences, producing a sequence of the results.
/// </summary>
/// <param name="first">The first sequence to merge.</param>
/// <param name="second">The first sequence to merge.</param>
/// <param name="resultSelector">A function that specifies how to merge the elements from the two sequences.</param>
/// <returns>A query that contains merged elements of two input sequences.</returns>
public static IQueryExpr <IEnumerable <TResult> > Zip <TFirst, TSecond, TResult>(IEnumerable <TFirst> first, IEnumerable <TSecond> second, Expression <Func <TFirst, TSecond, TResult> > resultSelector)
{
return(new QueryExpr <IEnumerable <TResult> >(QExpr.NewZipWith(Expression.Constant(first), Expression.Constant(second), resultSelector)));
}