Add project+modules for F# String.IsNullOrEmpty snippets

Author: brenoafb

snippets/fsharp/System/String/IsNullOrEmpty/IsNullOrEmpty.fsproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Include="inoe.fs" />
+    <Compile Include="NullString1.fs" />
+    <Compile Include="NullString2.fs" />
+    <Compile Include="isnullorempty1.fs" />
+  </ItemGroup>
+
+</Project>

snippets/fsharp/System/String/IsNullOrEmpty/NullString1.fs

@@ -1,25 +1,19 @@
+namespace IsNullOrEmpty
 open System
 
-// <Snippet2>
-let (s: string) = null
+module NullString1 =
 
-printfn "The value of the string is '%s'" s
+    // <Snippet2>
+    let (s: string) = null
 
-try
-    printfn "String length is %d" s.Length
-with
-    | :? NullReferenceException as ex -> printfn "%s" ex.Message
+    printfn "The value of the string is '%s'" s
 
-// The example displays the following output:
-//     The value of the string is ''
-//     Object reference not set to an instance of an object.
-// </Snippet2>
+    try
+        printfn "String length is %d" s.Length
+    with
+        | :? NullReferenceException as ex -> printfn "%s" ex.Message
 
-
-// <Snippet3>
-let s = ""
-printfn "The length of '%s' is %d." s s.Length
-
-// The example displays the following output:
-//       The length of '' is 0.
-// </Snippet3>
+    // The example displays the following output:
+    //     The value of the string is ''
+    //     Object reference not set to an instance of an object.
+    // </Snippet2>

snippets/fsharp/System/String/IsNullOrEmpty/NullString2.fs

@@ -0,0 +1,12 @@
+namespace IsNullOrEmpty
+open System
+
+module NullString2 =
+
+    // <Snippet3>
+    let s = ""
+    printfn "The length of '%s' is %d." s s.Length
+
+    // The example displays the following output:
+    //       The length of '' is 0.
+    // </Snippet3>

snippets/fsharp/System/String/IsNullOrEmpty/inoe.fs

@@ -1,21 +1,24 @@
+namespace IsNullOrEmpty
 open System
 
-//<Snippet1>
-let test (s: string): string =
-    if String.IsNullOrEmpty(s)
-    then "is null or empty"
-    else $"(\"{s}\") is neither null nor empty"
+module Inoe =
 
-let s1 = "abcd"
-let s2 = ""
-let s3 = null
+    //<Snippet1>
+    let test (s: string): string =
+        if String.IsNullOrEmpty(s)
+        then "is null or empty"
+        else $"(\"{s}\") is neither null nor empty"
 
-printfn "String s1 %s" (test s1)
-printfn "String s2 %s" (test s2)
-printfn "String s2 %s" (test s3)
+    let s1 = "abcd"
+    let s2 = ""
+    let s3 = null
 
-// The example displays the following output:
-//       String s1 ("abcd") is neither null nor empty.
-//       String s2 is null or empty.
-//       String s3 is null or empty.
-//</Snippet1>
+    printfn "String s1 %s" (test s1)
+    printfn "String s2 %s" (test s2)
+    printfn "String s2 %s" (test s3)
+
+    // The example displays the following output:
+    //       String s1 ("abcd") is neither null nor empty.
+    //       String s2 is null or empty.
+    //       String s3 is null or empty.
+    //</Snippet1>

snippets/fsharp/System/String/IsNullOrEmpty/isnullorempty1.fs

@@ -1,16 +1,19 @@
+namespace IsNullOrEmpty
 open System
 
-// <Snippet1>
-let testForNullOrEmpty (s: string): bool =
-    s = null || s = String.Empty
+module IsNullOrEmpty1 =
 
-let s1 = null
-let s2 = ""
+    // <Snippet1>
+    let testForNullOrEmpty (s: string): bool =
+        s = null || s = String.Empty
 
-printfn "%b" (testForNullOrEmpty s1)
-printfn "%b" (testForNullOrEmpty s2)
+    let s1 = null
+    let s2 = ""
 
-// The example displays the following output:
-//    true
-//    true
-// </Snippet1>
+    printfn "%b" (testForNullOrEmpty s1)
+    printfn "%b" (testForNullOrEmpty s2)
+
+    // The example displays the following output:
+    //    true
+    //    true
+    // </Snippet1>

xml/System/String.xml

@@ -8388,7 +8388,7 @@ A string is empty if it  is explicitly assigned an empty string ("") or <xref:Sy
 :::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR_System/system.string.isnullorempty/cpp/NullString1.cpp" id="Snippet3":::
 :::code language="csharp" source="~/snippets/csharp/System/String/IsNullOrEmpty/NullString1.cs" interactive="try-dotnet-method" id="Snippet3":::
 :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.string.isnullorempty/vb/NullString1.vb" id="Snippet3":::
-:::code language="fsharp" source="~/snippets/fsharp/System/String/IsNullOrEmpty/NullString1.fs" interactive="try-dotnet-method" id="Snippet3":::
+:::code language="fsharp" source="~/snippets/fsharp/System/String/IsNullOrEmpty/NullString2.fs" interactive="try-dotnet-method" id="Snippet3":::
 
 ## Examples
  The following example examines three strings and determines whether each string has a value, is an empty string, or is `null`.