//[Obsolete("experimental")]
public static TElement FirstOrDefault <TElement>(this IQueryStrategy <TElement> source)
{
// will it work for jvm?
var t = new StackTrace(0, true);
var s = Stopwatch.StartNew();
Console.WriteLine();
// X:\jsc.svn\examples\javascript\linq\test\TestSelectAndSubSelect\TestSelectAndSubSelect\ApplicationWebService.cs
// X:\jsc.svn\examples\javascript\LINQ\test\TestSelectFirstOrDefault\TestSelectFirstOrDefault\ApplicationWebService.cs
// X:\jsc.svn\examples\javascript\LINQ\test\TestSelectMember\TestSelectMember\ApplicationWebService.cs
var value = source.Take(1).AsGenericEnumerable().FirstOrDefault();
var caller = t.GetFrame(1);
Console.WriteLine(
Process.GetCurrentProcess().Id.ToString("x4") + ":"
+ Thread.CurrentThread.ManagedThreadId.ToString("x4")
+ " FirstOrDefault " + new { s.ElapsedMilliseconds, Debugger.IsAttached, caller = caller.ToString() });
return(value);
}
public static TElement FirstOrDefault <TElement>(this IQueryStrategy <TElement> source, IDbConnection cc)
{
// X:\jsc.svn\examples\javascript\LINQ\test\auto\TestSelect\TestXMySQL\Program.cs
// make sure the reader will be closed
// Additional information: Fatal error encountered during command execution.
var a = source.Take(1).AsEnumerable(cc).ToArray();
return(a.FirstOrDefault());
}
public static async Task <TElement> FirstOrDefaultAsync <TElement>(this IQueryStrategy <TElement> source, IDbConnection cc)
{
var x = await source.Take(1).AsEnumerableAsync(cc);
return(x.FirstOrDefault());
}