public static Task <long> LongCountAsyncLinqToDB <TSource>(
this IQueryable <TSource> source,
CancellationToken token = default)
=> AsyncExtensions.LongCountAsync(source.ToLinqToDB(), token);
public static Task <long> LongCountAsyncLinqToDB <TSource>(
this IQueryable <TSource> source,
Expression <Func <TSource, bool> > predicate,
CancellationToken token = default)
=> AsyncExtensions.LongCountAsync(source.ToLinqToDB(), predicate, token);
/// <summary>
/// Returns an System.Int64 that represents the number of elements in a sequence
/// that satisfy a condition
/// </summary>
/// <typeparam name="TSource">The type of the elements of source</typeparam>
/// <param name="source">An sequence that contains the elements to be counted</param>
/// <param name="predicate">A function to test each element for a condition</param>
/// <returns>
/// The number of elements in source that satisfy the condition in the predicate
/// function
/// </returns>
public static Task <long> LongCountAsync <TSource>(this IQueryable <TSource> source,
Expression <Func <TSource, bool> > predicate = null)
{
return(predicate == null?AsyncExtensions.LongCountAsync(source) : AsyncExtensions.LongCountAsync(source, predicate));
}
