first version

Author: ignatandrei

v2/GeneratorData/Category.cs

@@ -47,5 +47,6 @@ public enum Category
     MCP= 42,
     Bool=43,
     Profiler=44,
+    Idempotency=45
 }
 

v2/RSCGExamplesData/GeneratorDataRec.json

@@ -1521,5 +1521,10 @@
     "Category": 4,
     "dtStart": "2025-12-18T00:00:00",
     "show": true
+  },
+  {
+    "ID":"RSCG_idempotency",
+    "Category":45,
+    "dtStart":"2026-01-28T00:00:00"
   }
 ]

v2/rscg_examples/RSCG_idempotency/description.json

@@ -0,0 +1,22 @@
+{
+   "generator":{
+      "name":"RSCG_idempotency",
+      "nuget":[
+         "https://www.nuget.org/packages/RSCG_idempotency/"
+      ],
+      "link":"https://github.com/ignatandrei/RSCG_idempotency",
+      "author":"Ignat Andrei",
+      "source":"https://github.com/ignatandrei/RSCG_idempotency"
+   },
+   "data":{
+      "goodFor":["Generating code for idempotency"],
+      "csprojDemo":"IdempotencyDemo.csproj",
+      "csFiles":["Program.cs","Purchase.cs"],
+      "excludeDirectoryGenerated":[""],
+      "includeAdditionalFiles":[""]
+   },
+   "links":{
+      "blog":"",
+      "video":""
+   }
+}

v2/rscg_examples/RSCG_idempotency/src/IdempotencyDemo.slnx

@@ -0,0 +1,3 @@
+<Solution>
+  <Project Path="IdempotencyDemo/IdempotencyDemo.csproj" />
+</Solution>

v2/rscg_examples/RSCG_idempotency/src/IdempotencyDemo/IdempotencyDemo.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Caching.Memory" Version="10.0.2" />
+    <PackageReference Include="RSCG_idempotency" Version="10.2026.127.2000" />
+  </ItemGroup>
+	<PropertyGroup>
+		<EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
+		<CompilerGeneratedFilesOutputPath>$(BaseIntermediateOutputPath)\GX</CompilerGeneratedFilesOutputPath>
+	</PropertyGroup>
+
+</Project>

v2/rscg_examples/RSCG_idempotency/src/IdempotencyDemo/Program.cs

@@ -0,0 +1,10 @@
+// See https://aka.ms/new-console-template for more information
+using IdempotencyDemo;
+
+Console.WriteLine("Hello, World!");
+Purchase p=  new Purchase();
+var uniq = Guid.NewGuid().ToString("D");
+var s= p.PurchaseNow(uniq, "Book1", 20);
+Console.WriteLine(s);
+s = p.PurchaseNow(uniq, "Book1", 20);
+Console.WriteLine(s);

v2/rscg_examples/RSCG_idempotency/src/IdempotencyDemo/Purchase.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace IdempotencyDemo;
+
+internal partial class Purchase
+{
+    public bool PurchaseNow([RSCG_IdemPotency.Idempotent]string UniqueId, string idProduct,int quantity)
+    {
+        if(PurchaseNow_ExistsBefore(UniqueId))
+            return false;
+
+        Console.WriteLine($"bought ! ");
+        return true;
+    }
+}

v2/rscg_examples_site/docs/Authors/AndreiIgnat.md

@@ -6,7 +6,7 @@ title: About
 ## Content 
 
 You will find here code examples 
-of 251 Roslyn Source Code Generator (RSCG)
+of 252 Roslyn Source Code Generator (RSCG)
 that can be useful for you. That means, you will write more elegant and concise code - even if the generators code is not always nice to look.
 
 ## Are those examples ready for production?

v2/rscg_examples_site/docs/about.md

@@ -4,7 +4,7 @@ import styles from './styles.module.css';
 
 const FeatureList = [
   {
-title: '251 Examples (16 from MSFT)',
+title: '252 Examples (16 from MSFT)',
     Svg: require('@site/static/img/undraw_docusaurus_mountain.svg').default,
     description: (
       <>