Merge pull request #18 from osstotalsoft/feature/contravariance

pipeline contravariance
osstotalsoft · Jul 12, 2019 · 18482a5 · 18482a5
2 parents fc72e1b + f6db517
commit 18482a5
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/src/Core/NBB.Core.Pipeline/IPipelineMiddleware.cs b/src/Core/NBB.Core.Pipeline/IPipelineMiddleware.cs
@@ -11,7 +11,7 @@ namespace NBB.Core.Pipeline
     /// A middleware for a pipeline that processes data/context of type <typeparamref name="T"/>
     /// </summary>
     /// <typeparam name="T">The type of data/context processed in the pipeline</typeparam>
-    public interface IPipelineMiddleware<T>
+    public interface IPipelineMiddleware<in T>
     {
         /// <summary>
         /// Perform processing for the current <paramref name="data"/> next middleware data.

diff --git a/src/Core/NBB.Core.Pipeline/PipelineDelegate.cs b/src/Core/NBB.Core.Pipeline/PipelineDelegate.cs
@@ -9,5 +9,5 @@ namespace NBB.Core.Pipeline
     /// <typeparam name="T">The type of data/context processed in the pipeline.</typeparam>
     /// <param name="data">The data/context used as input in the pipeline.</param>
     /// <param name="cancellationToken">The cancellation token.</param>
-    public delegate Task PipelineDelegate<T>(T data, CancellationToken cancellationToken);
+    public delegate Task PipelineDelegate<in T>(T data, CancellationToken cancellationToken);
 }