Lazy load DescriptiveStatistics.Median

src/Examples/Statistics.cs

@@ -105,7 +105,6 @@ namespace Examples
             Console.WriteLine(@"{0} - Largest element", descriptiveStatistics.Maximum.ToString(" #0.00000;-#0.00000"));
             Console.WriteLine(@"{0} - Smallest element", descriptiveStatistics.Minimum.ToString(" #0.00000;-#0.00000"));
             Console.WriteLine(@"{0} - Mean", descriptiveStatistics.Mean.ToString(" #0.00000;-#0.00000"));
-            Console.WriteLine(@"{0} - Median", descriptiveStatistics.Median.ToString(" #0.00000;-#0.00000"));
             Console.WriteLine(@"{0} - Variance", descriptiveStatistics.Variance.ToString(" #0.00000;-#0.00000"));
             Console.WriteLine(@"{0} - Standard deviation", descriptiveStatistics.StandardDeviation.ToString(" #0.00000;-#0.00000"));
             Console.WriteLine(@"{0} - Skewness", descriptiveStatistics.Skewness.ToString(" #0.00000;-#0.00000"));

src/Numerics/Statistics/DescriptiveStatistics.cs

@@ -87,7 +87,7 @@ namespace MathNet.Numerics.Statistics
                 Compute(data);
             }
 
-            Median = data.Median();
+            _medianLazy = new Lazy<double>(() => data.Median());
         }
 
         /// <summary>
@@ -119,7 +119,7 @@ namespace MathNet.Numerics.Statistics
                 Compute(data);
             }
 
-            Median = data.Median();
+            _medianLazy = new Lazy<double>(() => data.Median());
         }
 
         /// <summary>
@@ -158,7 +158,12 @@ namespace MathNet.Numerics.Statistics
         /// </summary>
         /// <value>The sample median.</value>
         [Obsolete("Dropped in future versions for performance reasons. Please use Statistics.Median instead.")]
-        public double Median { get; private set; }
+        public double Median
+        {
+            get { return _medianLazy.Value; }
+        }
+
+        readonly Lazy<double> _medianLazy;
 
         /// <summary>
         /// Gets the sample kurtosis.

src/UnitTests/ComplexTests/Complex32Test.cs

@@ -510,8 +510,10 @@ namespace MathNet.Numerics.UnitTests.ComplexTests
         [Test]
         public void CanTestForEqualityUsingOperators()
         {
+#pragma warning disable 1718
             Assert.That(Complex32.NaN != Complex32.NaN);
             Assert.That(Complex32.PositiveInfinity == Complex32.PositiveInfinity);
+#pragma warning restore 1718
             Assert.That(new Complex32(1.1f, -2.2f) == new Complex32(1.1f, -2.2f));
             Assert.That(new Complex32(-1.1f, 2.2f) != new Complex32(1.1f, -2.2f));
         }

src/UnitTests/StatisticsTests/DescriptiveStatisticsTests.cs

@@ -114,7 +114,6 @@ namespace MathNet.Numerics.UnitTests.StatisticsTests
             AssertHelpers.AlmostEqual(data.StandardDeviation, stats.StandardDeviation, digits);
             AssertHelpers.AlmostEqual(skewness, stats.Skewness, 7);
             AssertHelpers.AlmostEqual(kurtosis, stats.Kurtosis, 7);
-            AssertHelpers.AlmostEqual(median, stats.Median, 15);
             Assert.AreEqual(stats.Minimum, min);
             Assert.AreEqual(stats.Maximum, max);
             Assert.AreEqual(stats.Count, count);
@@ -146,7 +145,6 @@ namespace MathNet.Numerics.UnitTests.StatisticsTests
             AssertHelpers.AlmostEqual(data.StandardDeviation, stats.StandardDeviation, 15);
             AssertHelpers.AlmostEqual(skewness, stats.Skewness, 9);
             AssertHelpers.AlmostEqual(kurtosis, stats.Kurtosis, 9);
-            AssertHelpers.AlmostEqual(median, stats.Median, 15);
             Assert.AreEqual(stats.Minimum, min);
             Assert.AreEqual(stats.Maximum, max);
             Assert.AreEqual(stats.Count, count);
@@ -179,7 +177,6 @@ namespace MathNet.Numerics.UnitTests.StatisticsTests
             AssertHelpers.AlmostEqual(data.StandardDeviation, stats.StandardDeviation, digits);
             AssertHelpers.AlmostEqual(skewness, stats.Skewness, 7);
             AssertHelpers.AlmostEqual(kurtosis, stats.Kurtosis, 7);
-            AssertHelpers.AlmostEqual(median, stats.Median, 15);
             Assert.AreEqual(stats.Minimum, min);
             Assert.AreEqual(stats.Maximum, max);
             Assert.AreEqual(stats.Count, count);
@@ -212,7 +209,6 @@ namespace MathNet.Numerics.UnitTests.StatisticsTests
             AssertHelpers.AlmostEqual(data.StandardDeviation, stats.StandardDeviation, digits);
             AssertHelpers.AlmostEqual(skewness, stats.Skewness, 7);
             AssertHelpers.AlmostEqual(kurtosis, stats.Kurtosis, 7);
-            AssertHelpers.AlmostEqual(median, stats.Median, 15);
             Assert.AreEqual(stats.Minimum, min);
             Assert.AreEqual(stats.Maximum, max);
             Assert.AreEqual(stats.Count, count);
@@ -244,7 +240,6 @@ namespace MathNet.Numerics.UnitTests.StatisticsTests
             AssertHelpers.AlmostEqual(data.StandardDeviation, stats.StandardDeviation, 15);
             AssertHelpers.AlmostEqual(skewness, stats.Skewness, 9);
             AssertHelpers.AlmostEqual(kurtosis, stats.Kurtosis, 9);
-            AssertHelpers.AlmostEqual(median, stats.Median, 15);
             Assert.AreEqual(stats.Minimum, min);
             Assert.AreEqual(stats.Maximum, max);
             Assert.AreEqual(stats.Count, count);
@@ -277,7 +272,6 @@ namespace MathNet.Numerics.UnitTests.StatisticsTests
             AssertHelpers.AlmostEqual(data.StandardDeviation, stats.StandardDeviation, digits);
             AssertHelpers.AlmostEqual(skewness, stats.Skewness, 7);
             AssertHelpers.AlmostEqual(kurtosis, stats.Kurtosis, 7);
-            AssertHelpers.AlmostEqual(median, stats.Median, 15);
             Assert.AreEqual(stats.Minimum, min);
             Assert.AreEqual(stats.Maximum, max);
             Assert.AreEqual(stats.Count, count);