diff --git a/research/try.cpp b/research/try.cpp
index 95b323296..cea4acedb 100644
--- a/research/try.cpp
+++ b/research/try.cpp
@@ -69,6 +69,7 @@
  * real implementation this will have to be supplied at usage site through a traits template,
  * otherwise it would not be possible to integrate seamlessly with custom data sources (as
  * happens in the intended use case, where actually a Node is the data source)
+ * @note transformed into a generic library component for usage by vault::gear::TestChainLoad
  */
 
 typedef unsigned int uint;
diff --git a/src/lib/random-draw.hpp b/src/lib/random-draw.hpp
new file mode 100644
index 000000000..517267cc7
--- /dev/null
+++ b/src/lib/random-draw.hpp
@@ -0,0 +1,304 @@
+/*
+  RANDOM-DRAW.hpp  -  randomly pick limited values
+
+  Copyright (C)         Lumiera.org
+    2023,               Hermann Vosseler <Ichthyostega@web.de>
+
+  This program is free software; you can redistribute it and/or
+  modify it under the terms of the GNU General Public License as
+  published by the Free Software Foundation; either version 2 of
+  the License, or (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+// 8/07  - how to control NOBUG??
+//         execute with   NOBUG_LOG='ttt:TRACE' bin/try
+// 1/08  - working out a static initialisation problem for Visitor (Tag creation)
+// 1/08  - check 64bit longs
+// 4/08  - comparison operators on shared_ptr<Asset>
+// 4/08  - conversions on the value_type used for boost::any
+// 5/08  - how to guard a downcasting access, so it is compiled in only if the involved types are convertible
+// 7/08  - combining partial specialisation and subclasses
+// 10/8  - abusing the STL containers to hold noncopyable values
+// 6/09  - investigating how to build a mixin template providing an operator bool()
+// 12/9  - tracking down a strange "warning: type qualifiers ignored on function return type"
+// 1/10  - can we determine at compile time the presence of a certain function (for duck-typing)?
+// 4/10  - pretty printing STL containers with python enabled GDB?
+// 1/11  - exploring numeric limits
+// 1/11  - integer floor and wrap operation(s)
+// 1/11  - how to fetch the path of the own executable -- at least under Linux?
+// 10/11 - simple demo using a pointer and a struct
+// 11/11 - using the boost random number generator(s)
+// 12/11 - how to detect if string conversion is possible?
+// 1/12  - is partial application of member functions possible?
+// 5/14  - c++11 transition: detect empty function object
+// 7/14  - c++11 transition: std hash function vs. boost hash
+// 9/14  - variadic templates and perfect forwarding
+// 11/14 - pointer to member functions and name mangling
+// 8/15  - Segfault when loading into GDB (on Debian/Jessie 64bit
+// 8/15  - generalising the Variant::Visitor
+// 1/16  - generic to-string conversion for ostream
+// 1/16  - build tuple from runtime-typed variant container
+// 3/17  - generic function signature traits, including support for Lambdas
+// 9/17  - manipulate variadic templates to treat varargs in several chunks
+// 11/17 - metaprogramming to detect the presence of extension points
+// 11/17 - detect generic lambda
+// 12/17 - investigate SFINAE failure. Reason was indirect use while in template instantiation
+// 03/18 - Dependency Injection / Singleton initialisation / double checked locking
+// 04/18 - investigate construction of static template members
+// 08/18 - Segfault when compiling some regular expressions for EventLog search
+// 10/18 - investigate insidious reinterpret cast
+// 12/18 - investigate the trinomial random number algorithm from the C standard lib
+// 04/19 - forwarding tuple element(s) to function invocation
+// 06/19 - use a statefull counting filter in a treeExplorer pipeline
+// 03/20 - investigate type deduction bug with PtrDerefIter
+// 01/21 - look for ways to detect the presence of an (possibly inherited) getID() function
+// 08/22 - techniques to supply additional feature selectors to a constructor call
+// 10/23 - search for ways to detect signatures of member functions and functors uniformly
+// 11/23 - prototype for a builder-DSL to configure a functor to draw and map random values
+
+
+/** @file random-draw.hpp
+ ** Build a component to select limited values randomly.
+ ** Prototyping to find a suitable DSL to configure drawing of random numbers and mapping results.
+ ** The underlying implementation shall be extracted from (and later used by) TestChainLoad; the
+ ** random numbers will be derived from node hash values and must be mapped to yield parameters
+ ** limited to a very small value range. While numerically simple, this turns out to be rather
+ ** error-prone, hence the desire to put a DSL in front. The challenge however arises from
+ ** the additional requirement to support various usage patters, all with minimal specs.
+ ** 
+ ** The following code lays out the ground structure, while treating Spec as a distinct
+ ** type, which is then mixed into Draw. This logical separation basically was led me to the
+ ** final solution: Draw both _is_ a function and _embodies_ the implementation of this function.
+ ** This somewhat surprising layout is what enables use as a DSL builder, because it allows both
+ ** to have the _builder use_ and the _converter use_ in the same class, even allowing to _define_
+ ** a Draw by giving a function which _produces_ a (dynamically parametrised) Draw.
+ ** 
+ ** In this prototype, all of the functor adaptation is also part of the Draw template; for the
+ ** real implementation this will have to be supplied at usage site through a traits template,
+ ** otherwise it would not be possible to integrate seamlessly with custom data sources (as
+ ** happens in the intended use case, where actually a Node is the data source)
+ ** 
+ ** @see RandomDraw_test
+ ** @see TestChainLoad_test
+ ** @see SchedulerStress_test
+ */
+
+
+#ifndef LIB_RANDOM_DRAW_H
+#define LIB_RANDOM_DRAW_H
+
+
+#include "lib/meta/function.hpp"
+#include "lib/util.hpp"
+
+#include <functional>
+#include <utility>
+
+
+namespace lib {
+
+using lib::meta::_Fun;
+using std::function;
+using std::forward;
+using std::move;
+
+
+template<typename T, T max>
+struct Limited
+  {
+    static constexpr T minVal() { return T(0); }
+    static constexpr T maxVal() { return max;  }
+    
+    T val;
+    
+    template<typename X>
+    Limited (X raw)
+      : val(util::limited (X(minVal()), raw, X(maxVal())))
+      { }
+  };
+
+template<typename T, T max>
+struct Spec
+  {
+    using Lim = Limited<T,max>;
+    static constexpr double CAP_EPSILON = 0.0001;
+        
+    double probability{0};
+    T maxResult{Lim::maxVal()};
+    
+    Spec() = default;
+    
+    explicit
+    Spec (double p) : probability{p}{ }
+    
+    Lim
+    limited (double val)
+      {
+        if (probability == 0.0 or val == 0.0)
+          return Lim{0};
+        double q = (1.0 - probability);
+        val -= q;
+        val /= probability;
+        val *= maxResult;
+        val += 1 + CAP_EPSILON;
+        return Lim{val};
+      }
+      
+  };
+
+template<typename T, T max>
+struct Draw
+  : Spec<T,max>
+  , function<Limited<T,max>(size_t)>
+  {
+    using Spc = Spec<T,max>;
+    using Lim = typename Spc::Lim;
+    using Fun = function<Lim(size_t)>;
+    
+    Draw()
+      : Spc{}
+      , Fun{[this](size_t hash){ return Spc::limited (asRand (hash)); }}
+      { }
+      
+    template<class FUN>
+    Draw(FUN&& fun)
+      : Spc{1.0}
+      , Fun{adaptOut(adaptIn(std::forward<FUN> (fun)))}
+      { }
+    
+    
+    Draw&&
+    probability (double p)
+      {
+        Spc::probability = p;
+        return move (*this);
+      }
+    
+    Draw&&
+    maxVal (uint m)
+      {
+        Spc::maxResult = m;
+        return move (*this);
+      }
+
+    template<class FUN>
+    Draw&&
+    mapping (FUN&& fun)
+      {
+        Fun(*this) = adaptOut(adaptIn(std::forward<FUN> (fun)));
+        return move (*this);
+      }
+    
+    
+    
+    double
+    asRand (size_t hash)
+      {
+        return double(hash % 256)/256;
+      }
+    
+    /**
+     * @internal helper to expose the signature `size_t(size_t)`
+     *           by wrapping a given lambda or functor.
+     */
+    template<class SIG, typename SEL=void>
+    struct Adaptor
+      {
+        static_assert (not sizeof(SIG), "Unable to adapt given functor.");
+      };
+    
+    template<typename RES>
+    struct Adaptor<RES(size_t)>
+      {
+        template<typename FUN>
+        static decltype(auto)
+        build (FUN&& fun)
+          {
+            return std::forward<FUN>(fun);
+          }
+      };
+    
+    template<typename RES>
+    struct Adaptor<RES(void)>
+      {
+        template<typename FUN>
+        static auto
+        build (FUN&& fun)
+          {
+            return [functor=std::forward<FUN>(fun)]
+                   (size_t)
+                      {
+                        return functor();
+                      };
+          }
+      };
+    
+    
+    template<class FUN>
+    decltype(auto)
+    adaptIn (FUN&& fun)
+      {
+        static_assert (lib::meta::_Fun<FUN>(), "Need something function-like.");
+        static_assert (lib::meta::_Fun<FUN>::ARITY <= 1, "Function with zero or one argument expected.");
+        
+        using Sig = typename lib::meta::_Fun<FUN>::Sig;
+        
+        return Adaptor<Sig>::build (forward<FUN> (fun));
+      }
+    
+    template<class FUN>
+    decltype(auto)
+    adaptOut (FUN&& fun)
+      {
+        static_assert (lib::meta::_Fun<FUN>(), "Need something function-like.");
+        static_assert (lib::meta::_Fun<FUN>::ARITY ==1, "Function with exactly one argument required.");
+        
+        using Res = typename lib::meta::_Fun<FUN>::Ret;
+        
+        if constexpr (std::is_same_v<Res, Lim>)
+          return std::forward<FUN>(fun);
+        else
+        if constexpr (std::is_same_v<Res, size_t>)
+          return [functor=std::forward<FUN>(fun), this]
+                 (size_t rawHash)
+                    {
+                      size_t hash = functor(rawHash);
+                      double randomNum = asRand (hash);
+                      return Spc::limited (randomNum);
+                    };
+        else
+        if constexpr (std::is_same_v<Res, double>)
+          return [functor=std::forward<FUN>(fun), this]
+                 (size_t rawHash)
+                    {
+                      double randomNum = functor(rawHash);
+                      return Spc::limited (randomNum);
+                    };
+        else
+        if constexpr (std::is_same_v<Res, Draw>)
+          return [functor=std::forward<FUN>(fun), this]
+                 (size_t rawHash)
+                    {
+                      Draw parametricDraw = functor(rawHash);
+                      return parametricDraw (rawHash);
+                    };
+        else
+          static_assert (not sizeof(Res), "unable to adapt / handle result type");
+        NOTREACHED("Handle based on return type");
+      }
+    
+  };
+  
+  
+} // namespace lib
+#endif /*LIB_RANDOM_DRAW_H*/
diff --git a/tests/15library.tests b/tests/15library.tests
index 992eac0c4..e19501ae3 100644
--- a/tests/15library.tests
+++ b/tests/15library.tests
@@ -508,6 +508,11 @@ return: 0
 END
 
 
+PLANNED "pick limited numbers randomly" RandomDraw_test  <<END
+return: 0
+END
+
+
 TEST "fractional arithmetics" Rational_test  <<END
 return: 0
 END
diff --git a/tests/library/random-draw-test.cpp b/tests/library/random-draw-test.cpp
new file mode 100644
index 000000000..022b9614c
--- /dev/null
+++ b/tests/library/random-draw-test.cpp
@@ -0,0 +1,119 @@
+/*
+  RandomDraw(Test)  -  verify the component builder for random selected values
+
+  Copyright (C)         Lumiera.org
+    2023,               Hermann Vosseler <Ichthyostega@web.de>
+
+  This program is free software; you can redistribute it and/or
+  modify it under the terms of the GNU General Public License as
+  published by the Free Software Foundation; either version 2 of
+  the License, or (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+* *****************************************************/
+
+/** @file random-draw-test.cpp
+ ** unit test \ref RandomDraw_test
+ */
+
+
+
+
+#include "lib/test/run.hpp"
+//#include "lib/test/test-helper.hpp"
+#include "lib/random-draw.hpp"
+//#include "lib/util.hpp"
+
+//#include <cstdlib>
+
+
+
+namespace lib {
+namespace test{
+  
+//  using util::isSameObject;
+//  using std::rand;
+  
+//  namespace error = lumiera::error;
+//  using error::LUMIERA_ERROR_FATAL;
+//  using error::LUMIERA_ERROR_STATE;
+  
+  
+  namespace {
+//    const Literal THE_END = "all dead and hero got the girl";
+    
+  }
+
+  
+  
+  
+  
+  /***********************************************************************************//**
+   * @test Verify a flexible builder for random-value generators; using a config template,
+   *       these can be outfitted to use a suitable source of randomness and to produce
+   *       values from a desired target type and limited range.
+   *       - TODO
+   * @see result.hpp
+   * @see lib::ThreadJoinable usage example
+   */
+  class RandomDraw_test
+    : public Test
+    {
+      
+      void
+      run (Arg)
+        {
+          simpleUse();
+          
+          verify_numerics();
+          verify_dynamicChange();
+        }
+      
+      
+      
+      /** @test TODO demonstrate a basic usage scenario
+       * @todo WIP 11/23 🔁 define ⟶ implement
+       */
+      void
+      simpleUse()
+        {
+          UNIMPLEMENTED ("simple usage example");
+        }
+      
+      
+      
+      /** @test TODO verify random number transformations
+       * @todo WIP 11/23 🔁 define ⟶ implement
+       */
+      void
+      verify_numerics()
+        {
+          UNIMPLEMENTED ("verify random number transformations");
+        }
+      
+      
+      
+      /** @test TODO change the generation profile dynamically
+       * @todo WIP 11/23 🔁 define ⟶ implement
+       */
+      void
+      verify_dynamicChange()
+        {
+          UNIMPLEMENTED ("change the generation profile dynamically");
+        }
+    };
+  
+  
+  /** Register this test class... */
+  LAUNCHER (RandomDraw_test, "unit common");
+  
+  
+}} // namespace lib::test
diff --git a/wiki/thinkPad.ichthyo.mm b/wiki/thinkPad.ichthyo.mm
index ed2d4164c..8e75dc0e7 100644
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@@ -96100,27 +96100,39 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 <icon BUILTIN="flag-yellow"/>
 <node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1700264860430" ID="ID_911248195" MODIFIED="1700331811934" TEXT="nochmal umst&#xfc;lpen....">
 <icon BUILTIN="pencil"/>
-<node CREATED="1700264870441" ID="ID_1812170860" MODIFIED="1700264912656">
+<node CREATED="1700264870441" ID="ID_1812170860" MODIFIED="1700491182299">
 <richcontent TYPE="NODE"><html>
   <head>
     
   </head>
   <body>
     <p>
-      Cap &#10230; Ergebnis-Typ <font face="Monospaced" color="#410ec3"><b>Draw</b></font>
+      <u>Ausgangspunkt</u>: Cap &#10230; Ergebnis-Typ <font color="#410ec3" face="Monospaced"><b>Draw</b></font>
+    </p>
+  </body>
+</html>
+</richcontent>
+<richcontent TYPE="NOTE"><html>
+  <head>
+    
+  </head>
+  <body>
+    <p>
+      ...dabei ist Cap die bereits geschaffene Hilfs-Komponente, die einen Zahlenwert mit einer Klammer von Iber/Untergrenze speichert und ihn in in diesen Rahmen hinein konditionieren kann. Das war ein relativ leichtgewichtiger erster Schritt, reicht aber nicht aus, um die techniche Komplexit&#228;t aus dem Nutzkontext zu entfernen
     </p>
   </body>
 </html>
 </richcontent>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1700264918159" ID="ID_334644013" MODIFIED="1700331828639" TEXT="diesen aber zugleich als Regel-Builder nutzbar machen">
+<node COLOR="#435e98" CREATED="1700264918159" ID="ID_334644013" MODIFIED="1700491041706" TEXT="diesen aber zugleich als Regel-Builder nutzbar machen">
 <icon BUILTIN="yes"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1700264938245" ID="ID_2732200" MODIFIED="1700331828640" TEXT="und zwar durch eine DSL die darauf als Manipulator-Funktion aufsetzt">
+<node COLOR="#435e98" CREATED="1700264938245" ID="ID_2732200" MODIFIED="1700491041705" TEXT="und zwar durch eine DSL die darauf als Manipulator-Funktion aufsetzt">
 <icon BUILTIN="yes"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1700264961367" ID="ID_788328130" MODIFIED="1700331818142" TEXT="Einstieg: ein Funktor-Adaptor (wie neulich f&#xfc;r microbenchmark)">
-<icon BUILTIN="flag-yellow"/>
+<node BACKGROUND_COLOR="#dfdd97" COLOR="#435e98" CREATED="1700264961367" ID="ID_788328130" MODIFIED="1700491028449" TEXT="Einstieg: ein Funktor-Adaptor (wie neulich f&#xfc;r microbenchmark)">
+<font NAME="SansSerif" SIZE="12"/>
+<icon BUILTIN="idea"/>
 <node CREATED="1700265008950" ID="ID_751701905" MODIFIED="1700265018898" TEXT="der Funktor liefert am Ende ein Draw"/>
 <node COLOR="#5b280f" CREATED="1700265019715" ID="ID_624547616" MODIFIED="1700345650023" TEXT="aber auf Wunsch kann man auch ein Draw in die Hand bekommen">
 <linktarget COLOR="#ad253c" DESTINATION="ID_624547616" ENDARROW="Default" ENDINCLINATION="679;28;" ID="Arrow_ID_124457360" SOURCE="ID_790826770" STARTARROW="None" STARTINCLINATION="-215;-7;"/>
@@ -96130,15 +96142,15 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 <icon BUILTIN="idea"/>
 </node>
 </node>
-<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1700331799351" ID="ID_619819862" MODIFIED="1700331808784" TEXT="Baumuster untersuchen (try.cpp)...">
-<icon BUILTIN="pencil"/>
-<node CREATED="1700342161236" ID="ID_1281138479" MODIFIED="1700342171869" TEXT="1.Enwurf: Funktions-Komposition">
+<node COLOR="#338800" CREATED="1700331799351" ID="ID_619819862" MODIFIED="1700490710418" TEXT="Baumuster untersuchen (try.cpp)...">
+<icon BUILTIN="button_ok"/>
+<node CREATED="1700342161236" FOLDED="true" ID="ID_1281138479" MODIFIED="1700490730479" TEXT="1.Enwurf: Funktions-Komposition">
 <node CREATED="1700342178718" ID="ID_1331338727" MODIFIED="1700342198924" TEXT="die Cap-Funktionalit&#xe4;t als eigener Funktor"/>
 <node CREATED="1700342199523" ID="ID_1963684995" MODIFIED="1700342217408" TEXT="vorgeschaltet dann die Erzeugung des Zufallswertes"/>
 <node CREATED="1700342243501" ID="ID_1390319632" MODIFIED="1700342253999" TEXT="damit w&#xe4;ren wir aber einerm reinen Funktor-Builder"/>
 <node CREATED="1700342254915" ID="ID_834526555" MODIFIED="1700342262877" TEXT="w&#xfc;rde gehen, war aber nicht das was mir vorschwebte"/>
 </node>
-<node BACKGROUND_COLOR="#f0d5c5" COLOR="#990033" CREATED="1700342264818" ID="ID_330199412" MODIFIED="1700342273106" TEXT="was will ich denn &#xfc;berhaupt?">
+<node BACKGROUND_COLOR="#c8c0b6" COLOR="#435e98" CREATED="1700342264818" ID="ID_330199412" MODIFIED="1700490702462" TEXT="was will ich denn &#xfc;berhaupt?">
 <font NAME="SansSerif" SIZE="12"/>
 <icon BUILTIN="help"/>
 <node CREATED="1700342274840" ID="ID_1272510180" MODIFIED="1700342289356" TEXT="wahrscheinlich alles und nix Bestimmtes...">
@@ -96296,7 +96308,7 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 </node>
 </node>
 </node>
-<node CREATED="1700345892467" ID="ID_920427348" MODIFIED="1700345909861" TEXT="2.Entwurf: Funktor-Builder + auto-Adaption">
+<node CREATED="1700345892467" FOLDED="true" ID="ID_920427348" MODIFIED="1700490969134" TEXT="2.Entwurf: Funktor-Builder + auto-Adaption">
 <node CREATED="1700345916752" ID="ID_267595647" MODIFIED="1700345920980" TEXT="Grunds&#xe4;tzlich">
 <node CREATED="1700345943261" ID="ID_388408150" MODIFIED="1700345956998" TEXT="Draw und Spec (Bereichseinteilung) werden verschmolzen"/>
 <node CREATED="1700345922921" ID="ID_1268721778" MODIFIED="1700345942500" TEXT="Ergebnis ist immer ein Draw (und damit eine Spec)"/>
@@ -96364,13 +96376,11 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 </node>
 </node>
 </node>
-<node BACKGROUND_COLOR="#f8f1cb" COLOR="#a50125" CREATED="1700349122079" ID="ID_419191002" MODIFIED="1700349127420" TEXT="Problem mit der Adaptierung">
+<node BACKGROUND_COLOR="#e0ceaa" COLOR="#690f14" CREATED="1700349122079" ID="ID_419191002" MODIFIED="1700490683746" TEXT="Problem mit der Adaptierung">
 <icon BUILTIN="messagebox_warning"/>
 <node CREATED="1700349130966" ID="ID_831772652" MODIFIED="1700349160702" TEXT="verhindert Herausl&#xf6;sen als Library-Klasse (und ist komplex)"/>
-<node BACKGROUND_COLOR="#f0d5c5" COLOR="#990033" CREATED="1700359719367" ID="ID_1254612041" MODIFIED="1700359739837" TEXT="damit verbundenes Problem: was ist die Signatur der Draw-Funktion?">
-<icon BUILTIN="help"/>
-</node>
-<node CREATED="1700358795138" ID="ID_1657442729" MODIFIED="1700358800541" TEXT="Analyse der F&#xe4;lle">
+<node COLOR="#435e98" CREATED="1700358795138" ID="ID_1657442729" MODIFIED="1700490963019" TEXT="Analyse der F&#xe4;lle">
+<icon BUILTIN="forward"/>
 <node CREATED="1700358808651" ID="ID_1831518834" MODIFIED="1700358840560" TEXT="RES:Draw">
 <node CREATED="1700358871480" ID="ID_67347765" MODIFIED="1700358938939" TEXT="invoke this one instead of the host-Draw"/>
 <node CREATED="1700358920993" ID="ID_1393200431" MODIFIED="1700358941509" TEXT="warning: other fields on host-Draw ignored">
@@ -96398,8 +96408,9 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 </node>
 </node>
 <node CREATED="1700359509971" ID="ID_1483199036" MODIFIED="1700359524565" TEXT="ben&#xf6;tigt wird: ein Function-chain-builder"/>
-<node CREATED="1700359612504" ID="ID_988711396" MODIFIED="1700359623743" TEXT="Design-Stufe-1: dediziert">
-<node CREATED="1700359625649" ID="ID_364635181" MODIFIED="1700359630119" TEXT="Adapter">
+<node COLOR="#435e98" CREATED="1700359612504" FOLDED="true" ID="ID_988711396" MODIFIED="1700490963022" TEXT="Design-Stufe-1: dediziert">
+<node CREATED="1700359625649" ID="ID_364635181" MODIFIED="1700490618340" TEXT="Adapter">
+<linktarget COLOR="#6493ca" DESTINATION="ID_364635181" ENDARROW="Default" ENDINCLINATION="-498;131;" ID="Arrow_ID_493746329" SOURCE="ID_1671789981" STARTARROW="None" STARTINCLINATION="469;19;"/>
 <node CREATED="1700361162606" ID="ID_1345527183" MODIFIED="1700361176208" TEXT="adaptOut(&#x3bb;)">
 <node CREATED="1700359640066" ID="ID_918713248" MODIFIED="1700359766325" TEXT="&#x3bb;-RES:Draw">
 <node CREATED="1700359783118" ID="ID_1603023899" MODIFIED="1700360709335" TEXT="&#x3bb;&#x2081; = adaptIn(&#x3bb;)"/>
@@ -96439,8 +96450,9 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 <node CREATED="1700361391736" ID="ID_1064796631" MODIFIED="1700361486767" TEXT="wird in jedem Zweig von adaptOut(&#x3bb;) ben&#xf6;tigt"/>
 </node>
 </node>
-<node BACKGROUND_COLOR="#f0d5c5" COLOR="#990033" CREATED="1700361501097" ID="ID_401015563" MODIFIED="1700361518463" TEXT="noch unklar: was ist der Ergebnis-Typ?">
+<node COLOR="#5b280f" CREATED="1700361501097" ID="ID_401015563" MODIFIED="1700490572245" TEXT="noch unklar: was ist der Ergebnis-Typ?">
 <icon BUILTIN="help"/>
+<icon BUILTIN="button_cancel"/>
 <node CREATED="1700361526878" ID="ID_981729861" MODIFIED="1700361562965" TEXT="damit implizierte Frage: ist Draw sinnvollerweise std::function ?"/>
 <node CREATED="1700361585230" ID="ID_1897786487" MODIFIED="1700361617245" TEXT="wenn ja: dann w&#xe4;re der Ergebnistyp Draw&amp;">
 <node CREATED="1700361662236" ID="ID_430183904" MODIFIED="1700361674294" TEXT="m&#xfc;&#xdf;te auf sich selber referenzieren"/>
@@ -96461,9 +96473,15 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 <node CREATED="1700361966107" ID="ID_440284003" MODIFIED="1700361977187" TEXT="der operator() hat einen Seiteneffekt"/>
 <node CREATED="1700361977817" ID="ID_527836444" MODIFIED="1700361991395" TEXT="anschlie&#xdf;end hold man sich das Ergebnis per Konversions-Operator"/>
 </node>
+<node CREATED="1700490523806" ID="ID_518227121" MODIFIED="1700490585296" TEXT="Schlu&#xdf;folgerung: f&#xfc;r eine rein zweckgebundene L&#xf6;sung problematisch...">
+<arrowlink DESTINATION="ID_556380585" ENDARROW="Default" ENDINCLINATION="-1;-177;" ID="Arrow_ID_1611327128" STARTARROW="None" STARTINCLINATION="-377;0;"/>
+<icon BUILTIN="forward"/>
 </node>
 </node>
-<node CREATED="1700365769348" ID="ID_556380585" MODIFIED="1700365775516" TEXT="Design-stufe-2: generisch">
+</node>
+<node COLOR="#435e98" CREATED="1700365769348" FOLDED="true" ID="ID_556380585" MODIFIED="1700490963023" TEXT="Design-stufe-2: generisch">
+<linktarget COLOR="#a9b4c1" DESTINATION="ID_556380585" ENDARROW="Default" ENDINCLINATION="-1;-177;" ID="Arrow_ID_1611327128" SOURCE="ID_518227121" STARTARROW="None" STARTINCLINATION="-377;0;"/>
+<icon BUILTIN="forward"/>
 <node CREATED="1700365860944" ID="ID_1336006745" MODIFIED="1700365909109" TEXT="es handelt sich dann insgesamt um eine Funktion: Q &#x27fc; Limited&lt;T, T max&gt;">
 <node CREATED="1700365917573" ID="ID_1497905227" MODIFIED="1700365934014" TEXT="es sollte eine einzige Funktion sein aus Gr&#xfc;nden der Klarheit"/>
 <node CREATED="1700365936094" ID="ID_1933404992" MODIFIED="1700365960831" TEXT="der Zieltyp Limited ist essentieller Bestandteil des Rechenschmas"/>
@@ -96535,20 +96553,78 @@ Date:&#160;&#160;&#160;Thu Apr 20 18:53:17 2023 +0200<br/>
 </node>
 </node>
 </node>
-<node CREATED="1700399151659" ID="ID_144021391" MODIFIED="1700399318338" TEXT="Hier erscheint ein Config-Typ sinnvoll">
+<node CREATED="1700399151659" ID="ID_144021391" MODIFIED="1700490660062" TEXT="Hier erscheint ein Config-Typ sinnvoll">
 <arrowlink COLOR="#a9b4c1" DESTINATION="ID_1619656561" ENDARROW="Default" ENDINCLINATION="-154;13;" ID="Arrow_ID_252746284" STARTARROW="None" STARTINCLINATION="95;-44;"/>
 <linktarget COLOR="#a9b4c1" DESTINATION="ID_144021391" ENDARROW="Default" ENDINCLINATION="151;-46;" ID="Arrow_ID_1749412477" SOURCE="ID_568728168" STARTARROW="None" STARTINCLINATION="-189;14;"/>
+<linktarget COLOR="#64929e" DESTINATION="ID_144021391" ENDARROW="Default" ENDINCLINATION="-136;11;" ID="Arrow_ID_646571312" SOURCE="ID_39517550" STARTARROW="None" STARTINCLINATION="208;8;"/>
 <node CREATED="1700399198368" ID="ID_1781925975" MODIFIED="1700399205813" TEXT="&#xfc;bergeben als Template Paramter"/>
 <node CREATED="1700399206449" ID="ID_1309572183" MODIFIED="1700399222443" TEXT="aber mit einem Default &#x27f9; dient als copy-n-paste-Vorlage"/>
 <node CREATED="1700399243756" ID="ID_510267956" MODIFIED="1700399258246" TEXT="das Konverter-Funktions-Temlate kann darin direkt enthalten sein"/>
 </node>
 </node>
 </node>
+<node COLOR="#435e98" CREATED="1700359719367" ID="ID_1254612041" MODIFIED="1700490912197" TEXT="damit verbundenes Problem: was ist die Signatur der Draw-Funktion?">
+<icon BUILTIN="help"/>
+<node CREATED="1700490792506" ID="ID_1607287838" MODIFIED="1700490807908" TEXT="letzten Endes mu&#xdf; sie den Quell- und Zieltyp kennen"/>
+<node CREATED="1700490809073" ID="ID_1049199825" MODIFIED="1700490828217" TEXT="und alle Teile m&#xfc;ssen im Draw selber gespeichert werden"/>
+<node COLOR="#435e98" CREATED="1700490829158" ID="ID_1235648316" MODIFIED="1700490910411" TEXT="&#x27f9; Draw effectively is-a function source &#x27fc; target"/>
+<node COLOR="#435e98" CREATED="1700490897308" ID="ID_1407106079" MODIFIED="1700490906366" TEXT="hinzu kommt Builder-Funktionalit&#xe4;t"/>
 </node>
 </node>
-<node COLOR="#338800" CREATED="1700444194601" ID="ID_1576940362" MODIFIED="1700444225488" TEXT="Funktionalit&#xe4;t deiziert ohne Quell-Typ prototypisch implementieren">
+</node>
+<node COLOR="#338800" CREATED="1700444194601" ID="ID_1576940362" MODIFIED="1700490083378" TEXT="Funktionalit&#xe4;t dediziert ohne Quell-Typ prototypisch implementieren">
 <icon BUILTIN="button_ok"/>
 </node>
+<node COLOR="#435e98" CREATED="1700490121573" ID="ID_1457864775" MODIFIED="1700490496554">
+<richcontent TYPE="NODE"><html>
+  <head>
+    
+  </head>
+  <body>
+    <p>
+      Fazit <b>Design-Analyse</b>
+    </p>
+  </body>
+</html>
+</richcontent>
+<icon BUILTIN="forward"/>
+<node CREATED="1700490144136" ID="ID_248814374" MODIFIED="1700490174056" TEXT="der Adapter-Ansatz f&#xfc;hrt zu einer Funktion Ende-zu-Ende"/>
+<node CREATED="1700490427387" ID="ID_1671789981" MODIFIED="1700490624419" TEXT="diese wird in zwei Schritten aufgebaut: Adapter am Eingang und Ausgang">
+<arrowlink COLOR="#6493ca" DESTINATION="ID_364635181" ENDARROW="Default" ENDINCLINATION="-498;131;" ID="Arrow_ID_493746329" STARTARROW="None" STARTINCLINATION="469;19;"/>
+</node>
+<node CREATED="1700490175196" ID="ID_1557807559" MODIFIED="1700490345221" TEXT="damit wird eine solche L&#xf6;sung zwangsl&#xe4;ufig generisch (und eine Library-Komponente)">
+<richcontent TYPE="NOTE"><html>
+  <head>
+    
+  </head>
+  <body>
+    <p>
+      warum? eine zweckgebundene L&#246;sung mit diesem Komplexit&#228;tsgrad w&#228;re nicht zu rechtfertigen; man w&#252;rde dann nach einer einfacheren Alternative suchen. Konkret komme ich allerdings von dieser einfacheren Alternative her, weil sie immer noch nicht einfach und klar genug war. Insofern bin ich froh, &#252;berhaupt eine L&#246;sung zu haben, die im R&#252;ckblick sinnvoll darstellbar ist
+    </p>
+  </body>
+</html>
+</richcontent>
+</node>
+<node CREATED="1700490355020" ID="ID_442374644" MODIFIED="1700490390211" TEXT="die Basis-Komponente ist damit parametrisiert in Quell- und Zieltyp"/>
+<node CREATED="1700490391087" ID="ID_39517550" MODIFIED="1700490669142" TEXT="es erscheint sinnvoll, dies in ein Konfigurations-Template zusammenzufassen">
+<arrowlink COLOR="#64929e" DESTINATION="ID_144021391" ENDARROW="Default" ENDINCLINATION="-136;11;" ID="Arrow_ID_646571312" STARTARROW="None" STARTINCLINATION="208;8;"/>
+</node>
+<node CREATED="1700490465981" ID="ID_95937370" MODIFIED="1700490485279" TEXT="der Nutzer bekommt eine builder-DSL auf dem resultierenden, spezialisierten Typ"/>
+</node>
+</node>
+<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1700491763307" ID="ID_1225692248" MODIFIED="1700494387962" TEXT="Library-Komponente extrahieren: RandomDraw">
+<icon BUILTIN="pencil"/>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1700491815546" ID="ID_1942150407" MODIFIED="1700491825145" TEXT="bestehenden Prototyp konsolidieren">
+<icon BUILTIN="flag-yellow"/>
+<node CREATED="1700491829216" ID="ID_1294373641" MODIFIED="1700491844930" TEXT="den Spec-Subtyp in RandomDraw integrieren"/>
+<node CREATED="1700491953800" ID="ID_75649548" MODIFIED="1700491984631" TEXT="Policy-Template einf&#xfc;hren"/>
+<node CREATED="1700491985219" ID="ID_460437503" MODIFIED="1700491990343" TEXT="Adaptierung restrukturieren"/>
+</node>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1700491877926" ID="ID_1958310493" MODIFIED="1700491890609" TEXT="Test zur Dokumentation">
+<icon BUILTIN="flag-yellow"/>
+<node CREATED="1700491902622" ID="ID_523469259" MODIFIED="1700491929304" TEXT="soll auch den Proze&#xdf; der Spezialisierung demonstrieren"/>
+<node CREATED="1700491930155" ID="ID_1583745392" MODIFIED="1700491949372" TEXT="numerische Grenzen beleuchten"/>
+</node>
 </node>
 </node>
 </node>