public static IEnumerable <int> WhereFalse(
this TranslatedArray <GRBVar> array,
Func <GRBVar, double> valueSelector = null)
{
foreach (var i in array.Indices)
{
if (array[i].ToDouble(valueSelector) < 0.5)
{
yield return(i);
}
}
}
public static IEnumerable <int> WhereNonZero(
this TranslatedArray <GRBVar> array,
Func <GRBVar, double> valueSelector = null)
{
var comparer = NumericComparer.Default;
foreach (var i in array.Indices)
{
if (comparer.AreEqual(array[i].ToDouble(valueSelector), 0.0) == false)
{
yield return(i);
}
}
}
public static bool TryWhereNonZero(
this TranslatedArray <GRBVar> variables,
out int index,
Func <GRBVar, double> valueSelector = null)
{
var comparer = NumericComparer.Default;
index = default;
foreach (var i in variables.Indices)
{
if (comparer.AreEqual(variables[i].ToDouble(valueSelector), 0.0) == false)
{
index = i;
return(true);
}
}
return(false);
}
