review comment

artidoro · artidoro · commit 9c418e7cc15d · 2019-03-22T13:49:44.000-07:00
diff --git a/src/Microsoft.ML.Data/Transforms/ExtensionsCatalog.cs b/src/Microsoft.ML.Data/Transforms/ExtensionsCatalog.cs
@@ -29,7 +29,7 @@ public sealed class InputOutputColumnPair
         /// <param name="inputColumnName">Name of the column to transform. If set to <see langword="null"/>, the value of the <paramref name="outputColumnName"/> will be used as source.</param>
         public InputOutputColumnPair(string outputColumnName, string inputColumnName = null)
         {
-            InputColumnName = inputColumnName;
+            InputColumnName = inputColumnName ?? outputColumnName;
             OutputColumnName = outputColumnName;
         }
     }

Original file line number	Diff line number	Diff line change
`@@ -29,7 +29,7 @@ public sealed class InputOutputColumnPair`
`29`	`29`	`/// <param name="inputColumnName">Name of the column to transform. If set to <see langword="null"/>, the value of the <paramref name="outputColumnName"/> will be used as source.</param>`
`30`	`30`	`public InputOutputColumnPair(string outputColumnName, string inputColumnName = null)`
`31`	`31`	`{`
`32`		`- InputColumnName = inputColumnName;`
	`32`	`+ InputColumnName = inputColumnName ?? outputColumnName;`
`33`	`33`	`OutputColumnName = outputColumnName;`
`34`	`34`	`}`
`35`	`35`	`}`