[성현모] CPXV2 Init

SystemX.Net.CP.Platform/SystemX.Net.Platform/SystemX.Common/Extension/EmComparable.cs

@@ -0,0 +1,75 @@
+using System;
+using System.Diagnostics.Contracts;
+using System.Linq;
+
+namespace SystemX.Net.Platform.Common.ExtensionMethods
+{
+    public static class EmComparable
+    {
+        /// <summary>
+        /// [min, max]
+        /// value 값이 from, to 사이에 존재하는지를 검사한다.
+        /// http://stackoverflow.com/questions/8776624/if-value-in-rangex-y-function-c-sharp
+        /// </summary>
+        [Pure]
+        public static bool InClosedRange<T>(this T val, T min, T max) where T : IComparable<T>
+        {
+            Contract.Requires(min.CompareTo(max) <= 0);
+            return min.CompareTo(val) <= 0 && val.CompareTo(max) <= 0;
+        }
+
+        [Pure]
+        public static bool InRange<T>(this T val, T min, T max) where T : IComparable<T>
+        {
+            return val.InClosedRange(min, max);
+        }
+
+        /// <summary> [min, max) </summary>
+        [Pure]
+        public static bool InClampRange<T>(this T val, T min, T max) where T : IComparable<T>
+        {
+            Contract.Requires(min.CompareTo(max) <= 0);
+            return min.CompareTo(val) <= 0 && val.CompareTo(max) < 0;
+        }
+
+        /// <summary> (min, max) </summary>
+        [Pure]
+        public static bool InOpenRange<T>(this T val, T min, T max) where T : IComparable<T>
+        {
+            Contract.Requires(min.CompareTo(max) <= 0);
+            return min.CompareTo(val) < 0 && val.CompareTo(max) < 0;
+        }
+
+
+        [Pure]
+        public static bool EpsilonEqual(this double value1, double value2, double epsilon = Double.Epsilon)
+        {
+            return Math.Abs(value1 - value2) < epsilon;
+        }
+
+        [Pure]
+        public static bool EpsilonEqual(this float value1, float value2, float epsilon = Single.Epsilon)
+        {
+            return Math.Abs(value1 - value2) < epsilon;
+        }
+
+        /// <summary> Key 값이 set 에 포함되는지 여부를 검사한다. </summary>
+        [Pure]
+        public static bool IsOneOf(this IComparable key, params IComparable[] set)
+        {
+            return set.Any(e => e.CompareTo(key) == 0);
+        }
+
+
+        public static bool IsOneOf(this object key, params object[] set)
+        {
+            return set.Any(e => e == key);
+        }
+
+        public static bool IsOneOf(this Type type, params Type[] set)
+        {
+            return set.Any(t => t.IsAssignableFrom(type));
+        }
+
+    }
+}