public static Frame <c, a> frame <a, b, c>(IEnumerable <Tuple <TLeft, TRight> > columns) where b : ISeries <c>
{
Tuple <a[], b[]> tuple1 = ArrayModule.Unzip <TLeft, TRight>((Tuple <M0, M1>[])ArrayModule.OfSeq <Tuple <TLeft, TRight> >((IEnumerable <M0>)columns));
b[] values = tuple1.Item2;
a[] keys = tuple1.Item1;
Tuple <FSharpList <IVectorBuilder>, FSharpList <IIndexBuilder> > tuple2 = new Tuple <FSharpList <IVectorBuilder>, FSharpList <IIndexBuilder> >((FSharpList <IVectorBuilder>)ListModule.OfSeq <IVectorBuilder>(SeqModule.Distinct <IVectorBuilder>((IEnumerable <M0>)SeqModule.ToList <IVectorBuilder>((IEnumerable <M0>) new FFrameextensions.vbs <b, c>(values, default(b), (IEnumerator <b>)null, 0, (IVectorBuilder)null)))), (FSharpList <IIndexBuilder>)ListModule.OfSeq <IIndexBuilder>(SeqModule.Distinct <IIndexBuilder>((IEnumerable <M0>)SeqModule.ToList <IIndexBuilder>((IEnumerable <M0>) new FFrameextensions.ibs <b, c>(values, default(b), (IEnumerator <b>)null, 0, (IIndexBuilder)null)))));
Tuple <IVectorBuilder, IIndexBuilder> tuple3;
if (tuple2.Item1.get_TailOrNull() != null)
{
FSharpList <IVectorBuilder> fsharpList1 = tuple2.Item1;
if (fsharpList1.get_TailOrNull().get_TailOrNull() == null && tuple2.Item2.get_TailOrNull() != null)
{
FSharpList <IIndexBuilder> fsharpList2 = tuple2.Item2;
if (fsharpList2.get_TailOrNull().get_TailOrNull() == null)
{
tuple3 = new Tuple <IVectorBuilder, IIndexBuilder>(fsharpList1.get_HeadOrDefault(), fsharpList2.get_HeadOrDefault());
goto label_5;
}
}
}
tuple3 = new Tuple <IVectorBuilder, IIndexBuilder>(FVectorBuilderimplementation.VectorBuilder.Instance, FIndexBuilderimplementation.IndexBuilder.Instance);
label_5:
Tuple <IVectorBuilder, IIndexBuilder> tuple4 = tuple3;
IVectorBuilder vectorBuilder = tuple4.Item1;
return(FrameUtils.fromColumns <c, a, b>(tuple4.Item2, vectorBuilder, new Series <TLeft, TRight>(keys, values)));
}
