public static List <T> Choose <T>(this IRandom rand, int count, IList <T> items)
{
var selection = new List <T>(count);
for (int i = 0; i < count; ++i)
{
selection[i] = rand.Choose(items);
}
return(selection);
}
public IReadOnlyList <int> SelectNodeCount()
{
var selection = _uniqueCounts[_random.Choose(_uniqueCounts.Count)];
/*
* var selection = _uniqueCounts
* .OrderBy(x => x.Sum(y => (long)y))
* .First();
*/
return(selection.Select(b => (int)b).ToList());
}
public Variable ChooseVariable(IScope scope, VariableOptions options = VariableOptions.None)
{
_candidates.Clear();
if (options.Has(VariableOptions.ForWriting))
{
PrepareForWriting(scope, options);
}
else
{
PrepareForReading(scope, options);
}
var count = _candidates.Count;
if (count > 0)
{
return(_rand.Choose(_candidates));
}
return(null);
}