Throw ArgumentNullExceptions for non-nullable params to the CsvDefinition.Write()

Author: davetransom

CSharpVitamins.Tabulation/CSharpVitamins.Tabulation.nuspec

@@ -12,6 +12,7 @@
 `CharpVitamins.Tabulation` provides helpers to create tabular data with little fuss i.e. Tab or comma separated values (`CsvDefinition`), 
 or padded columns of plain text (via `PlainTextTable`).</description>
     <releaseNotes>
+* 1.0.3: Now throws `ArgumentNullException` for non-nullable params to the `CsvDefinition.Write()` method
 * 1.0.2: Meta data update
 * 1.0.1: Adds `PlainTextTable.Divide()` method as a quick way to append a new divider.
 * 1.0.0: Initial release

CSharpVitamins.Tabulation/CsvDefinition.cs

@@ -81,6 +81,12 @@ public bool Remove(string key, StringComparison comparison = StringComparison.Or
 		/// <param name="delimiter">The string to delimit column values with. A single character delimiter isare also used to escape the value, multi-character strings are not escaped.</param>
 		public void Write(TextWriter writer, IEnumerable<T> rows, string delimiter = ",")
 		{
+			if (writer == null)
+				throw new ArgumentNullException(nameof(writer));
+
+			if (rows == null)
+				throw new ArgumentNullException(nameof(rows));
+
 			if (delimiter == null)
 				throw new ArgumentNullException(nameof(delimiter));
 

CSharpVitamins.Tabulation/Properties/AssemblyInfo.cs

@@ -14,5 +14,5 @@
 [assembly: ComVisible(false)]
 [assembly: Guid("09a98341-8845-4307-b4e4-5235b3cf9191")]
 
-[assembly:     AssemblyVersion("1.0.2")]
-[assembly: AssemblyFileVersion("1.0.2")]
+[assembly:     AssemblyVersion("1.0.3")]
+[assembly: AssemblyFileVersion("1.0.3")]