#if net45

Author: wallymathieu

src/FSharpPlus/Extensions/HashSet.fs

@@ -66,7 +66,9 @@ module HashSet =
     /// <returns><c>true</c> if the set contains <c>value</c>; otherwise, <c>false</c>.</returns>
     [<CompiledName("Contains")>]
     let contains (value: 'T) (source: HashSet<'T>) : bool =
+        #if !NET45
         raiseIfNull (nameof source) source
+        #endif
         source.Contains value
 
     /// <summary>Determines whether the first set is a subset of the second set.</summary>
@@ -75,6 +77,8 @@ module HashSet =
     /// <returns><c>true</c> if <c>source1</c> is a subset of <c>source2</c>; otherwise, <c>false</c>.</returns>
     [<CompiledName("IsSubset")>]
     let isSubset (source1: HashSet<'T>) (source2: HashSet<'T>) : bool =
+        #if !NET45
         raiseIfNull (nameof source1) source1
         raiseIfNull (nameof source2) source2
+        #endif
         source1.IsSubsetOf source2