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Add IsNull()/IsNotNull() helper extensions #5207

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merged 3 commits into from
May 29, 2022
Merged

Add IsNull()/IsNotNull() helper extensions #5207

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2233327
Add IsNull()/IsNotNull() helper extensions
smoogipoo May 27, 2022
1f72704
Annotate return value for consumers
smoogipoo May 27, 2022
635f9ae
Merge branch 'master' into nullable-support
peppy May 29, 2022
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15 changes: 13 additions & 2 deletions osu.Framework/Extensions/ObjectExtensions/ObjectExtensions.cs
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Original file line number Diff line number Diff line change
@@ -1,10 +1,11 @@
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.

using System.Diagnostics;

#nullable enable

using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;

namespace osu.Framework.Extensions.ObjectExtensions
{
/// <summary>
Expand All @@ -27,5 +28,15 @@ public static T AsNonNull<T>(this T? obj)
Debug.Assert(obj != null);
return obj;
}

/// <summary>
/// If the given object is null.
/// </summary>
public static bool IsNull<T>([NotNullWhen(false)] this T obj) => ReferenceEquals(obj, null);

/// <summary>
/// <c>true</c> if the given object is not null, <c>false</c> otherwise.
/// </summary>
public static bool IsNotNull<T>([NotNullWhen(true)] this T obj) => !ReferenceEquals(obj, null);
}
}