| /Collections/Utilities/Extensions.cs |
|---|
| @@ -0,0 +1,58 @@ |
|---|
| /////////////////////////////////////////////////////////////////////////// |
| // Copyright (C) Wizardry and Steamworks 2013 - License: GNU GPLv3 // |
| // Please see: http://www.gnu.org/licenses/gpl.html for legal details, // |
| // rights of fair usage, the disclaimer and warranty conditions. // |
| /////////////////////////////////////////////////////////////////////////// |
| |
| using System.Collections.Generic; |
| using System.Linq; |
| |
| namespace wasSharp.Collections.Utilities |
| { |
| public static class Extensions |
| { |
| /////////////////////////////////////////////////////////////////////////// |
| // Copyright (C) 2016 Wizardry and Steamworks - License: GNU GPLv3 // |
| /////////////////////////////////////////////////////////////////////////// |
| /// <summary> |
| /// Returns true of an enumerable contains more than one element. |
| /// </summary> |
| /// <typeparam name="T">the type of the enumeration</typeparam> |
| /// <param name="e">the enumeration</param> |
| /// <returns>true if enumeration contains more than one element</returns> |
| /// <remarks>O(2) worst case</remarks> |
| public static bool Some<T>(this IEnumerable<T> e) |
| { |
| var i = 0; |
| using (var iter = e.GetEnumerator()) |
| { |
| while (iter.MoveNext()) |
| { |
| if (++i > 1) |
| return true; |
| } |
| return false; |
| } |
| } |
| |
| /// <summary> |
| /// Compares two dictionaries for equality. |
| /// </summary> |
| /// <typeparam name="TKey">key type</typeparam> |
| /// <typeparam name="TValue">value type</typeparam> |
| /// <param name="dictionary">dictionary to compare</param> |
| /// <param name="otherDictionary">dictionary to compare to</param> |
| /// <returns>true if the dictionaries contain the same elements</returns> |
| public static bool ContentEquals<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, |
| IDictionary<TKey, TValue> otherDictionary) |
| { |
| return |
| (dictionary ?? new Dictionary<TKey, TValue>()).Count.Equals( |
| (otherDictionary ?? new Dictionary<TKey, TValue>()).Count) && |
| (otherDictionary ?? new Dictionary<TKey, TValue>()) |
| .OrderBy(kvp => kvp.Key) |
| .SequenceEqual((dictionary ?? new Dictionary<TKey, TValue>()) |
| .OrderBy(kvp => kvp.Key)); |
| } |
| } |
| } |
