public void benchmark()
{
const int HeapSize = 5000;
int[] randomValues = Enumerable.Range(0, 100000).Select(_ => _random.Next()).ToArray();
BenchmarkResult r1 = MicroBenchmark.MeasureTime(() =>
{
BestKeeper <int> sut = new BestKeeper <int>(HeapSize, (n1, n2) => n1 - n2);
for (int i = 0; i < randomValues.Length; i++)
{
sut.Add(randomValues[i]);
}
}, 100);
BenchmarkResult r2 = MicroBenchmark.MeasureTime(() =>
{
OrderedArrayBestKeeper <int> sut = new OrderedArrayBestKeeper <int>(HeapSize, (n1, n2) => n1 - n2);
for (int i = 0; i < randomValues.Length; i++)
{
sut.Add(randomValues[i]);
}
}, 100);
r1.IsSignificantlyBetterThan(r2).Should().BeTrue();
}
public void our_Concatenate_to_string_must_use_String_Join_since_it_is_faster()
{
string ConcatenateCandidate(IEnumerable <string> @this, string separator = ", ")
{
return(new StringBuilder().AppendStrings(@this, separator).ToString());
}
string text = File.ReadAllText(Path.Combine(TestHelper.SolutionFolder, "Tests/CK.Text.Tests/StringAndStringBuilderExtensionTests.cs"))
.NormalizeEOLToLF();
var lines = text.Split('\n');
var words = text.Split(' ', '\n');
var rJoinLines = MicroBenchmark.MeasureTime(() => String.Join(", ", lines));
var rJoinWords = MicroBenchmark.MeasureTime(() => String.Join(", ", words));
var rConcatLines = MicroBenchmark.MeasureTime(() => ConcatenateCandidate(lines));
var rConcatWords = MicroBenchmark.MeasureTime(() => ConcatenateCandidate(words));
rJoinLines.IsSignificantlyBetterThan(rConcatLines).Should().BeTrue();
rJoinWords.IsSignificantlyBetterThan(rConcatWords).Should().BeTrue();
var smallSet = lines.Take(20).ToArray();
var rConcatSmall = MicroBenchmark.MeasureTime(() => ConcatenateCandidate(smallSet));
var rJoinSmall = MicroBenchmark.MeasureTime(() => String.Join(", ", smallSet));
rJoinSmall.IsSignificantlyBetterThan(rConcatSmall).Should().BeTrue();
}
