public static object SolverIDictsGroupBy(IList args)
{
var rows = (IList <IIndexedDict>)args[0];
var grpBy = (IList)args[1];
if (rows.Count == 0)
{
return(rows); // return empty list
}
var row0 = (IIndexedDict)rows[0];
var k2n = new Dictionary <string, int>(row0.Key2Ndx, StringComparer.OrdinalIgnoreCase);
var keyNdxs = grpBy.Cast <object>().Select(o => k2n[Convert.ToString(o)]).ToArray();
{
var lst = rows.ToArray();
IIndexedDictExtensions.SortByKeyTimed(lst, keyNdxs);
rows = lst;
}
int n = row0.ValuesList.Length;
var valNdxs = Enumerable.Range(0, n).Except(keyNdxs).ToArray();
var results = new OPs.ListOf <IIndexedDict>();
foreach (IIndexedDict row in rows)
{
var vals = row.ValuesList;
int i = IIndexedDictExtensions.BinarySearch(results, keyNdxs, vals);
if (i < 0)
{
var grp = new object[n];
foreach (int j in keyNdxs)
{
var to = vals[j] as ITimedObject;
grp[j] = (to == null) ? vals[j] : to.Object;
}
foreach (int j in valNdxs)
{
var lst = new List <object>();
lst.Add(vals[j]);
grp[j] = lst;
}
results.Insert(~i, ValuesDictionary.New(grp, k2n));
}
else
{
var grp = results[i].ValuesList;
foreach (int j in valNdxs)
{
var lst = (IList)grp[j];
lst.Add(vals[j]);
}
}
}
return(results);
}
public static object IDictsGroupByFirstOrderedField([CanBeVector] object arg)
{
var rows = (IList)arg;
if (rows.Count == 0)
{
return(rows); // return empty list
}
var results = new OPs.ListOf <IIndexedDict>();
var keyNdxs = new int[] { 0 };
foreach (IIndexedDict row in rows)
{
var vals = row.ValuesList;
int n = vals.Length;
int i = IIndexedDictExtensions.BinarySearch(results, keyNdxs, vals);
if (i < 0)
{
var grp = new object[n];
{
var to = vals[0] as ITimedObject;
grp[0] = (to == null) ? vals[0] : to.Object;
}
for (int j = 1; j < n; j++)
{
var lst = new List <object>();
lst.Add(vals[j]);
grp[j] = lst;
}
results.Insert(~i, ValuesDictionary.New(grp, row.Key2Ndx));
}
else
{
var grp = results[i].ValuesList;
for (int j = 1; j < n; j++)
{
var lst = (IList)grp[j];
lst.Add(vals[j]);
}
}
}
return(results);
}
