a934fb155e
git-svn-id: file:///srv/devel/repo-conversion/nusu@330 d2e56fa2-650e-0410-a79f-9358c0239efd
97 lines
3.5 KiB
C#
97 lines
3.5 KiB
C#
#region CPL License
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/*
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Nuclex Framework
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Copyright (C) 2002-2017 Nuclex Development Labs
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This library is free software; you can redistribute it and/or
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modify it under the terms of the IBM Common Public License as
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published by the IBM Corporation; either version 1.0 of the
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License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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IBM Common Public License for more details.
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You should have received a copy of the IBM Common Public
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License along with this library
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*/
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#endregion
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using System;
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namespace Nuclex.Support {
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/// <summary>Helper methods for enumerations</summary>
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public static class EnumHelper {
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/// <summary>Returns the highest value encountered in an enumeration</summary>
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/// <typeparam name="TEnumeration">
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/// Enumeration of which the highest value will be returned
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/// </typeparam>
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/// <returns>The highest value in the enumeration</returns>
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public static TEnumeration GetHighestValue<TEnumeration>()
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where TEnumeration : IComparable {
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TEnumeration[] values = GetValues<TEnumeration>();
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// If the enumeration is empty, return nothing
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if(values.Length == 0) {
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return default(TEnumeration);
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}
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// Look for the highest value in the enumeration. We initialize the highest value
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// to the first enumeration value so we don't have to use some arbitrary starting
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// value which might actually appear in the enumeration.
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TEnumeration highestValue = values[0];
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for(int index = 1; index < values.Length; ++index) {
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if(values[index].CompareTo(highestValue) > 0) {
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highestValue = values[index];
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}
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}
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return highestValue;
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}
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/// <summary>Returns the lowest value encountered in an enumeration</summary>
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/// <typeparam name="TEnumeration">
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/// Enumeration of which the lowest value will be returned
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/// </typeparam>
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/// <returns>The lowest value in the enumeration</returns>
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public static TEnumeration GetLowestValue<TEnumeration>()
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where TEnumeration : IComparable {
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TEnumeration[] values = GetValues<TEnumeration>();
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// If the enumeration is empty, return nothing
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if(values.Length == 0) {
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return default(TEnumeration);
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}
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// Look for the lowest value in the enumeration. We initialize the lowest value
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// to the first enumeration value so we don't have to use some arbitrary starting
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// value which might actually appear in the enumeration.
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TEnumeration lowestValue = values[0];
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for(int index = 1; index < values.Length; ++index) {
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if(values[index].CompareTo(lowestValue) < 0) {
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lowestValue = values[index];
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}
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}
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return lowestValue;
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}
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/// <summary>Retrieves a list of all values contained in an enumeration</summary>
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/// <typeparam name="TEnum">
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/// Type of the enumeration whose values will be returned
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/// </typeparam>
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/// <returns>All values contained in the specified enumeration</returns>
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/// <remarks>
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/// This method produces collectable garbage so it's best to only call it once
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/// and cache the result.
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/// </remarks>
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public static TEnum[] GetValues<TEnum>() {
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return (TEnum[])Enum.GetValues(typeof(TEnum));
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}
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}
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} // namespace Nuclex.Support |