public void TestSingleComparer()
{
string propName = "SingleProp";
_boCol[0].SetPropertyValue(propName, 3.1);
_boCol[1].SetPropertyValue(propName, 5.2);
_boCol[2].SetPropertyValue(propName, 3.0);
SingleComparer <MultiPropBO> comparer = new SingleComparer <MultiPropBO>(propName);
_boCol.Sort(comparer);
Assert.IsNull(_boCol[0].GetPropertyValue(propName));
Assert.AreEqual((Single)3.0, _boCol[1].GetPropertyValue(propName));
Assert.AreEqual((Single)3.1, _boCol[2].GetPropertyValue(propName));
Assert.AreEqual((Single)5.2, _boCol[3].GetPropertyValue(propName));
}
public static int DuplicateBinarySearch <T, TTarget>(
[NotNull] this IList <T> values,
[NotNull] SingleComparer <TTarget> comparer,
[NotNull] Func <T, TTarget> converter)
{
if (comparer == null)
{
throw new ArgumentNullException(nameof(comparer));
}
if (values.Count == 0)
{
return(-1);
}
int start = 0;
int end = values.Count - 1;
int midIndex = end / 2;
int firstOccuranceIndex = -1;
TTarget midItem = converter.Invoke(values[midIndex]);
int compareResult = comparer.Compare(midItem);
while (start <= end)
{
if (compareResult < 0)
{
start = midIndex + 1;
}
else
{
end = midIndex - 1;
if (compareResult == 0)
{
firstOccuranceIndex = midIndex;
}
}
midIndex = (start + end) / 2;
midItem = converter.Invoke(values[midIndex]);
compareResult = comparer.Compare(midItem);
}
return(firstOccuranceIndex);
}
public void TestSingleComparer()
{
string propName = "SingleProp";
_boCol[0].SetPropertyValue(propName, 3.1);
_boCol[1].SetPropertyValue(propName, 5.2);
_boCol[2].SetPropertyValue(propName, 3.0);
SingleComparer<MultiPropBO> comparer = new SingleComparer<MultiPropBO>(propName);
_boCol.Sort(comparer);
Assert.IsNull(_boCol[0].GetPropertyValue(propName));
Assert.AreEqual((Single)3.0, _boCol[1].GetPropertyValue(propName));
Assert.AreEqual((Single)3.1, _boCol[2].GetPropertyValue(propName));
Assert.AreEqual((Single)5.2, _boCol[3].GetPropertyValue(propName));
}
