IConvertible F# snippet (#7763)

Author: albert-du

snippets/fsharp/System/IConvertible/Overview/fs.fsproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Include="iconvertible.fs" />
+  </ItemGroup>
+</Project>

snippets/fsharp/System/IConvertible/Overview/iconvertible.fs

@@ -0,0 +1,77 @@
+// <snippet1>
+open System
+
+/// Class that implements IConvertible
+type Complex(x, y) =
+    member _.GetDoubleValue() =
+        sqrt (x * x + y * y)
+ 
+    interface IConvertible with
+        member _.GetTypeCode() =
+            TypeCode.Object
+
+        member _.ToBoolean(provider: IFormatProvider) =
+            (x <> 0.) || (y <> 0.)
+
+        member this.ToByte(provider: IFormatProvider) =
+            Convert.ToByte(this.GetDoubleValue())
+
+        member this.ToChar(provider: IFormatProvider) =
+            Convert.ToChar(this.GetDoubleValue())
+
+        member this.ToDateTime(provider: IFormatProvider) =
+            Convert.ToDateTime(this.GetDoubleValue())
+
+        member this.ToDecimal(provider: IFormatProvider) =
+            Convert.ToDecimal(this.GetDoubleValue())
+
+        member this.ToDouble(provider: IFormatProvider) =
+            this.GetDoubleValue()
+
+        member this.ToInt16(provider: IFormatProvider) =
+            Convert.ToInt16(this.GetDoubleValue())
+
+        member this.ToInt32(provider: IFormatProvider) =
+            Convert.ToInt32(this.GetDoubleValue())
+
+        member this.ToInt64(provider: IFormatProvider) =
+            Convert.ToInt64(this.GetDoubleValue())
+
+        member this.ToSByte(provider: IFormatProvider) =
+            Convert.ToSByte(this.GetDoubleValue())
+
+        member this.ToSingle(provider: IFormatProvider) =
+            Convert.ToSingle(this.GetDoubleValue())
+
+        member _.ToString(provider: IFormatProvider) =
+            $"({x}, {y})"
+
+        member this.ToType(conversionType: Type, provider: IFormatProvider) =
+            Convert.ChangeType(this.GetDoubleValue(), conversionType)
+
+        member this.ToUInt16(provider: IFormatProvider) =
+            Convert.ToUInt16(this.GetDoubleValue())
+
+        member this.ToUInt32(provider: IFormatProvider) =
+            Convert.ToUInt32(this.GetDoubleValue())
+
+        member this.ToUInt64(provider: IFormatProvider) =
+            Convert.ToUInt64(this.GetDoubleValue())
+
+let writeObjectInfo testObject =
+    let typeCode = Type.GetTypeCode(testObject.GetType())
+    match typeCode with
+    | TypeCode.Boolean ->
+        printfn $"Boolean: {testObject}"
+    | TypeCode.Double ->
+        printfn $"Boolean: {testObject}"
+    | _ ->
+        printfn $"{typeCode}: {testObject}"
+
+let testComplex = Complex(4, 7)
+
+writeObjectInfo testComplex
+writeObjectInfo (Convert.ToBoolean testComplex)
+writeObjectInfo (Convert.ToDecimal testComplex)
+writeObjectInfo (Convert.ToString testComplex)
+// </snippet1>

xml/System/IConvertible.xml

@@ -64,6 +64,7 @@
    
  :::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR_System/system.IConvertible/CPP/iconvertible.cpp" id="Snippet1":::
  :::code language="csharp" source="~/snippets/csharp/System/IConvertible/Overview/iconvertible.cs" interactive="try-dotnet" id="Snippet1":::
+ :::code language="fsharp" source="~/snippets/fsharp/System/IConvertible/Overview/iconvertible.fs" id="Snippet1":::
  :::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.IConvertible/VB/iconvertible.vb" id="Snippet1":::
 
  ]]></format>