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22 lines
749 B
22 lines
749 B
5 years ago
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#if NET20 || NET30 || NET35 || !NET_4_6
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namespace System
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{
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/// <summary>Defines a provider for push-based notification.</summary>
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/// <typeparam name="T">The object that provides notification information.</typeparam>
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#if NETCF
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public interface IObservable<T>
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#else
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public interface IObservable<out T>
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#endif
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{
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/// <summary>Notifies the provider that an observer is to receive notifications.</summary>
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/// <returns>A reference to an interface that allows observers to stop receiving notifications before the provider has finished sending them.</returns>
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/// <param name="observer">The object that is to receive notifications.</param>
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IDisposable Subscribe(IObserver<T> observer);
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}
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}
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#endif
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