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Undefined.cs
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38 lines (33 loc) · 1.09 KB
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
namespace Microsoft.ClearScript
{
/// <summary>
/// Represents an undefined value.
/// </summary>
/// <remarks>
/// Most script languages support one or more special values that represent nonexistent,
/// missing, unknown, or undefined data. The ClearScript library maps some such values to
/// <c>null</c>, and others to instances of this class.
/// </remarks>
public class Undefined
{
internal static readonly Undefined Value = new Undefined();
private Undefined()
{
}
#region Object overrides
/// <summary>
/// Returns a string that represents the current object.
/// </summary>
/// <returns>A string that represents the current object.</returns>
/// <remarks>
/// The <see cref="Undefined"/> version of this method returns "[undefined]".
/// </remarks>
public override string ToString()
{
return "[undefined]";
}
#endregion
}
}