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TreeExplorer: investigate the backtracking abilities

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There is a bug or shortcoming in the existing ErrorLog matcher implementation.
It is not really difficult to fix, however doing so would require us to intersperse
yet another helper facility into the log matcher. And it occurred to me, that
this helper would effectively re-implement the stack based backtracking ability,
which is already present in TreeExplorer (and was created precisely to support
this kind of recursive evaluation strategies).

Thus I intend to switch the implementation of the EventLog matcher from the
old IterTool framework to the newer TreeExplorer framework. And this intention
made me re-read the code, fixing several comments and re-thinking the design
This commit is contained in:
Fischlurch 2018-09-02 16:01:07 +02:00
parent 2520ee82d1
commit 3fc5a94b87
3 changed files with 557 additions and 236 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
src/lib/iter-tree-explorer.hpp
View file

@ -574,7 +574,7 @@ namespace lib {
* yielding a compatible value type). Now, this _sequence of children_ effectively
* replaces the expanded source element in the overall resulting sequence; which
* means, the nested sequence was _flattened_ into the results. Since this expand()
* operation can again invoked on the results, the implementation of such an evaluation
* operation can again be invoked on the results, the implementation of such an evaluation
* requires a stack datastructure, so the nested iterator from each expand() invocation
* can be pushed to become the new active source for iteration. Thus the primary purpose
* of this Expander (decorator) is to integrate those "nested child iterators" seamlessly
@ -583,7 +583,7 @@ namespace lib {
* the source iterator wrapped by this decorator.
* @remark since we allow a lot of leeway regarding the actual form and definition of the
* _expansion functor_, there is a lot of minute technical details, mostly confined
* within the _BoundFunctorTraits.
* within the _BoundFunctor traits.
* @tparam SRC the wrapped source iterator, typically a TreeExplorer or nested decorator.
* @tparam FUN the concrete type of the functor passed. Will be dissected to find the signature
*/
@ -1108,7 +1108,7 @@ namespace lib {
/* ==== Builder functions ==== */
/** preconfigure this TreeExplorer to allow for _"expansion of children"_.
* The resulting iterator exposes an `expand()` function, which consumes
* The resulting iterator exposes an `expandChildren()` function, which consumes
* the current head element of this iterator and feeds it through the
* _expansion functor_, which was provided to this builder function here.
* The _expansion functor_ is expected to yield a sequence of "child" elements,

82
tests/library/iter-tree-explorer-test.cpp
View file

@ -218,42 +218,46 @@ namespace test{
/*******************************************************************//**
* @test use a simple source iterator yielding numbers
* to build various functional evaluation structures,
* based on the \ref IterExplorer template.
* - the [state adapter](\ref verifyStateAdapter() )
* iterator construction pattern
* - helper to [chain iterators](\ref verifyChainedIterators() )
* - building [tree exploring structures](\ref verifyDepthFirstExploration())
* - the [monadic nature](\ref verifyMonadOperator()) of IterExplorer
* - a [recursively self-integrating](\ref verifyRecrusiveSelfIntegration())
* evaluation pattern
* to build various functional evaluation pipelines,
* based on the \ref TreeExplorer template.
* - the adapter to wrap the source, which can either
* [be a "state core"](\ref verify_wrappedState() ), or can
* [be a "Lumiera Forward Iterator"](\ref verify_wrappedIterator() )
* - the defining use case for TreeExplorer is to build a
* [pipeline for depth-first exploration](\ref verify_expandOperation() )
* of a (functional) tree structure. This "tree" is created by invoking
* a "expand functor", which can be defined in various ways.
* - the usual building blocks for functional evaluation pipelines, that is
* [filtering](\ref verify_FilterIterator() ) and
* [transforming](\ref verify_transformOperation() ) of
* the elements yielded by the wrapped source iterator.
* - building complex pipelines by combining the aforementioned building blocks
* - using an opaque source, hidden behind the IterSource interface, and
* an extension (sub interface) to allow for "tree exploration" without
* any knowledge regarding the concrete implementation of the data source.
*
* ## Explanation
*
* Both this test and the IterExplorer template might be bewildering
* and cryptic, unless you know the *Monad design pattern*. »Monads«
* are heavily used in functional programming, actually they originate
* from Category Theory. Basically, Monad is a pattern where we combine
* several computation steps in a specific way; but instead of intermingling
* the individual computation steps and their combination, the goal is to
* isolate and separate the _mechanics of combination_, so we can focus on
* the actual _computation steps:_ The mechanics of combination are embedded
* into the Monad type, which acts as a kind of container, holding some entities
* to be processed. The actual processing steps are then attached to the monad as
* "function object" parameters. It is up to the monad to decide if, and when
* those processing steps are applied to the embedded values and how to combine
* the results into a new monad.
* These tests build a evaluation pipeline by _wrapping_ some kind of data source
* and then layering some evaluation stages on top. There are two motivations why
* one might want to build such a _filter pipeline:_
* - on demand processing ("pull principle")
* - separation of source computation and "evaluation mechanics"
* when building complex search and backtracking algorithms.
*
* Using the monad pattern is well suited when both the mechanics of
* combination and the individual computation steps tend to be complex.
* In such a situation, it is beneficial to develop and test both
* in isolation. The IterExplorer template applies this pattern
* to the task of processing a source sequence. Typically we use
* this in situations where we can't afford building elaborate
* data structures in (global) memory, but rather strive at
* doing everything on-the-fly. A typical example is the
* processing of a variably sized data set without
* using heap memory for intermediary results.
* This usage style is inspired from the *Monad design pattern*. In our case here,
* the Iterator pipeline would be the monad, and can be augmented and reshaped by
* attaching further processing steps. How those processing steps are to be applied
* remains an internal detail, defined by the processing pipeline. »Monads« are heavily
* used in functional programming, actually they originate from Category Theory. Basically,
* Monad is a pattern where we combine several computation steps in a specific way; but
* instead of intermingling the individual computation steps and their combination,
* the goal is to isolate and separate the _mechanics of combination_, so we can focus
* on the actual _computation steps:_ The mechanics of combination are embedded into the
* Monad type, which acts as a kind of container, holding some entities to be processed.
* The actual processing steps are then attached to the monad as "function object" parameters.
* It is up to the monad to decide if, and when those processing steps are applied to the
* embedded values and how to combine the results into a new monad.
*
* @see TreeExplorer
* @see IterAdapter
@ -440,7 +444,7 @@ namespace test{
template<class EXP>
void
verify_treeExpandingIterator(EXP ii)
verify_treeExpandingIterator (EXP ii)
{
CHECK (!isnil (ii));
CHECK (5 == *ii);
@ -620,7 +624,7 @@ namespace test{
* matching algorithms. Even more so, when other operations like filtering are intermingled;
* in that case it might even happen that the downstream consumer does not even see the
* items resulting from child expansion, because they are evaluated and then filtered
* away by a transformer and filter placed in between.
* away by transformers and filters placed in between.
* @note as a consequence of the flexible automatic adapting of bound functors, it is
* possible for bound functors within different "layers" to collaborate, based on
* additional knowledge regarding the embedded data source internals. This test
@ -779,6 +783,16 @@ namespace test{
// contrived example to verify interplay of filtering and child expansion;
// especially note that the filter is re-evaluated after expansion happened.
cout << "VERIFY->"
<<materialise(
treeExplore(CountDown{10})
.expand([](uint i){ return CountDown{i%4==0? i-1 : 0}; })
// .filter([](uint i){ return i%2; })
.expandAll()
)<<endl;
// another convoluted example to demonstrate
// - a filter predicate with side-effect
// - and moreover the predicate is a generic lambda

705
wiki/thinkPad.ichthyo.mm
View file

@ -1451,7 +1451,7 @@
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@ -5509,7 +5509,7 @@
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@ -5921,7 +5921,7 @@
</node>
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<icon BUILTIN="button_ok"/>
<node COLOR="#338800" CREATED="1508540823475" FOLDED="true" ID="ID_793410656" MODIFIED="1533685069127" TEXT="path-resolution ausf&#xfc;hren">
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<node CREATED="1509475495057" ID="ID_27489504" MODIFIED="1518487921065" TEXT="Aufruf mit ResolutionState"/>
@ -5943,7 +5943,7 @@
<node CREATED="1509476126793" ID="ID_1463784807" MODIFIED="1518487921065" TEXT="ist mit dem Baum verwoben"/>
<node CREATED="1509476133741" ID="ID_1273043633" MODIFIED="1518487921065" TEXT="der Baum ist aber Implementierungs-Detail"/>
</node>
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<node CREATED="1509476154258" ID="ID_930376282" MODIFIED="1535891788152" TEXT="m&#xf6;gliche L&#xf6;sungen">
<icon BUILTIN="idea"/>
<node CREATED="1509476160585" ID="ID_171588117" MODIFIED="1509476184594" TEXT="Zustand opaque verpacken"/>
<node CREATED="1509476185182" ID="ID_613038974" MODIFIED="1509476196153" TEXT="Callback &#xfc;ber den Baum transportieren"/>
@ -5979,15 +5979,12 @@
<node CREATED="1509482028205" ID="ID_1589522162" MODIFIED="1509482039271" TEXT="die Logik steckt im eigenen Combinator"/>
</node>
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<node CREATED="1514328757725" ID="ID_1835412332" MODIFIED="1514328766544" TEXT="auch &#xfc;ber Transformer und Abstraktionsbarrieren hinweg"/>
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<icon BUILTIN="info"/>
<node CREATED="1509491594115" FOLDED="true" ID="ID_214903834" MODIFIED="1533608415788" TEXT="was tr&#xe4;gt LocationQuery bei?">
<icon BUILTIN="help"/>
@ -6110,7 +6107,7 @@
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<richcontent TYPE="NODE"><html>
<head>
@ -6139,7 +6136,7 @@
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@ -6171,7 +6168,7 @@
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<node CREATED="1510341362957" FOLDED="true" ID="ID_1499495468" MODIFIED="1525124215509" TEXT="wirklich monadisch?">
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@ -6337,7 +6334,7 @@
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@ -6351,16 +6348,8 @@
</p>
</body>
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@ -6582,10 +6571,10 @@
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@ -9056,9 +9045,10 @@
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@ -9067,7 +9057,7 @@
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@ -9076,7 +9066,7 @@
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@ -9092,7 +9082,7 @@
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@ -9111,8 +9101,8 @@
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<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1513564476303" FOLDED="true" ID="ID_718816032" MODIFIED="1535891933050" TEXT="Problem: Typ">
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<node CREATED="1513564486206" ID="ID_586028205" MODIFIED="1513564495520" TEXT="Typ ist nicht uniform"/>
<node CREATED="1513564496228" ID="ID_559674728" MODIFIED="1513564503503" TEXT="wird erst hinter IterSource konform"/>
@ -9219,7 +9209,7 @@
</node>
</node>
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<node CREATED="1513891620064" FOLDED="true" HGAP="-78" ID="ID_393488703" MODIFIED="1535891925091" TEXT="Diskussion" VSHIFT="10">
<icon BUILTIN="forward"/>
<node CREATED="1513891660578" FOLDED="true" ID="ID_1557026848" MODIFIED="1525124214857" TEXT="heterogener Baum">
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@ -9331,7 +9321,7 @@
</node>
</node>
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<node CREATED="1513893841787" FOLDED="true" ID="ID_588599089" MODIFIED="1535891923427">
<richcontent TYPE="NODE"><html>
<head>
@ -9373,7 +9363,7 @@
</node>
<node CREATED="1513893916705" ID="ID_1837000174" MODIFIED="1513894531402" TEXT="als nested-Interface von LocationQuery"/>
</node>
<node COLOR="#177d54" CREATED="1513894057318" FOLDED="true" HGAP="19" ID="ID_1657702066" MODIFIED="1525124214858" TEXT="Weiterungen..." VSHIFT="28">
<node COLOR="#177d54" CREATED="1513894057318" FOLDED="true" HGAP="19" ID="ID_1657702066" MODIFIED="1535891921460" TEXT="Weiterungen..." VSHIFT="28">
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<icon BUILTIN="idea"/>
<node CREATED="1513894072292" ID="ID_550737261" MODIFIED="1513894085095" TEXT="die n&#xe4;chsten Schritte w&#xe4;ren....">
@ -9472,7 +9462,7 @@
</node>
</node>
</node>
<node COLOR="#338800" CREATED="1513961620603" FOLDED="true" ID="ID_1014293898" MODIFIED="1533608415821" TEXT="Implementierung">
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<icon BUILTIN="button_ok"/>
<node COLOR="#338800" CREATED="1513962702097" FOLDED="true" ID="ID_1829231358" MODIFIED="1533608415452" TEXT="Iterator-Typ konstruieren">
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@ -9681,7 +9671,7 @@
<node CREATED="1510941687588" ID="ID_601914095" MODIFIED="1518487921065" TEXT="beispielhaft f&#xfc;r GenNode umsetzen">
<icon BUILTIN="yes"/>
</node>
<node COLOR="#338800" CREATED="1510941740069" FOLDED="true" ID="ID_1408571420" MODIFIED="1533608416154" TEXT="erweiterter ChildIter">
<node COLOR="#338800" CREATED="1510941740069" FOLDED="true" ID="ID_1408571420" MODIFIED="1535891884712" TEXT="erweiterter ChildIter">
<arrowlink COLOR="#283b63" DESTINATION="ID_596422747" ENDARROW="Default" ENDINCLINATION="66;49;" ID="Arrow_ID_1521598219" STARTARROW="Default" STARTINCLINATION="94;-19;"/>
<icon BUILTIN="button_ok"/>
<node COLOR="#338800" CREATED="1513560671819" ID="ID_989478065" MODIFIED="1514292039775" TEXT="Interface umstellen">
@ -10109,7 +10099,7 @@
</node>
</node>
</node>
<node COLOR="#338800" CREATED="1510941766817" FOLDED="true" HGAP="13" ID="ID_1117346518" MODIFIED="1533608416166" TEXT="Testf&#xe4;lle" VSHIFT="29">
<node COLOR="#338800" CREATED="1510941766817" FOLDED="true" HGAP="13" ID="ID_1117346518" MODIFIED="1535891833392" TEXT="Testf&#xe4;lle" VSHIFT="29">
<icon BUILTIN="button_ok"/>
<node COLOR="#338800" CREATED="1513477873206" ID="ID_939423021" MODIFIED="1518487921065" TEXT="definieren was abzudecken ist...">
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@ -15311,7 +15301,7 @@
</node>
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<node CREATED="1486943969999" ID="ID_1823284637" MODIFIED="1518487921078" TEXT="Wizzard">
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<node CREATED="1533688038820" ID="ID_70134302" MODIFIED="1535891607125" TEXT="Fehlerlog (notification display)">
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</node>
<node CREATED="1486943974590" ID="ID_1603501979" MODIFIED="1518487921078" TEXT="Hilfe (Website?)"/>
@ -17293,7 +17283,7 @@
<icon BUILTIN="pencil"/>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1533401271538" ID="ID_613065826" MODIFIED="1533401302008" TEXT="erst mal nur eine Nachricht als UI-Notification">
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<node BACKGROUND_COLOR="#fdfdcf" COLOR="#ff0000" CREATED="1533402513829" ID="ID_1456159316" MODIFIED="1533403219885" TEXT="#1099 DemoGuiRoundtrip">
<node BACKGROUND_COLOR="#fdfdcf" COLOR="#ff0000" CREATED="1533402513829" ID="ID_1456159316" MODIFIED="1535892210892" TEXT="#1099 DemoGuiRoundtrip">
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<icon BUILTIN="flag-pink"/>
</node>
@ -25101,6 +25091,45 @@
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1535815210288" ID="ID_1041148737" MODIFIED="1535815475299" TEXT="Problem: kein wirkliches Backtracking">
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<node CREATED="1535835597691" ID="ID_218241863" MODIFIED="1535835683187" TEXT="wird relevant bei Richtungs-Wechsel">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
Beispiel:
</p>
<p>
a-b-c-a
</p>
<p>
match(&quot;a&quot;).after(&quot;b&quot;) scheitert, weil sich die Suche am ersten &quot;a&quot; festbei&#223;t.
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</body>
</html>
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<icon BUILTIN="info"/>
</node>
<node CREATED="1535835709996" ID="ID_239175550" MODIFIED="1535835723893" TEXT="wir brauchen zwingend eine Art Stack">
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<node CREATED="1535836509369" ID="ID_391734023" MODIFIED="1535836566669" TEXT="wenn eine Konfiguration ersch&#xf6;pft (leer) ist m&#xfc;ssen wir..."/>
<node CREATED="1535836534934" ID="ID_371785386" MODIFIED="1535836558822" TEXT="auf dem n&#xe4;chsten Element der vorherigen Stufe neu aufsetezn"/>
</node>
<node CREATED="1535836610803" ID="ID_1351097381" MODIFIED="1535893429218" TEXT="das kommt mir bekannt vor...">
<icon BUILTIN="idea"/>
<node CREATED="1535836620898" ID="ID_1732889993" MODIFIED="1535836645399" TEXT="kann mein neuer Pipeline-Iter das?">
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</node>
<node CREATED="1535893406156" ID="ID_451238053" MODIFIED="1535893422972" TEXT="Ja: er wurde exakt f&#xfc;r solche Auswertungen konstruiert">
<icon BUILTIN="yes"/>
</node>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1535893431656" ID="ID_1626597975" MODIFIED="1535893590393" TEXT="Beschlu&#xdf;: umstellen auf TreeExplorer">
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<icon BUILTIN="pencil"/>
</node>
</node>
</node>
</node>
@ -30432,6 +30461,436 @@
</node>
</node>
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<node CREATED="1535891026946" ID="ID_958757780" MODIFIED="1535891031093" TEXT="sehr wichtiges Konzept"/>
<node CREATED="1535891031609" ID="ID_1246882752" MODIFIED="1535891037564" TEXT="leider zwei Auspr&#xe4;gungen">
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<node CREATED="1535891050566" ID="ID_89731232" MODIFIED="1535891054746" TEXT="von Core erben">
<node CREATED="1535895093066" ID="ID_1894277171" MODIFIED="1535895094494" TEXT="IterableDecorator"/>
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</node>
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<node CREATED="1535893036132" ID="ID_827990682" MODIFIED="1535893040736" TEXT="nicht besonders sch&#xf6;n"/>
<node CREATED="1535893041324" ID="ID_1175882215" MODIFIED="1535893044215" TEXT="aber soweit wartbar"/>
</node>
<node CREATED="1535893048363" ID="ID_794436728" MODIFIED="1535893082084" TEXT="Frage: abl&#xf6;sen durch Pipeline-Builder?">
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<node CREATED="1535890810111" ID="ID_677938944" MODIFIED="1535890812763" TEXT="IterSource">
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<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1535890830772" ID="ID_1558484735" MODIFIED="1535890859471" TEXT="bestehendes Design ist ungeschickt">
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<node CREATED="1535890890980" ID="ID_1370634828" MODIFIED="1535890896359" TEXT="unterstellt einen Pos-Pointer"/>
<node CREATED="1535890915576" ID="ID_8718412" MODIFIED="1535890938281" TEXT="Semantik der Abbruchbedingung ist verwirrend"/>
</node>
<node CREATED="1535890958987" ID="ID_71109348" MODIFIED="1535890964438" TEXT="alternatives Design">
<node CREATED="1535890965170" ID="ID_1363636315" MODIFIED="1535890968798" TEXT="was geht hier?">
<node CREATED="1535890972609" ID="ID_1586923063" MODIFIED="1535890985339" TEXT="wie state core?"/>
</node>
</node>
</node>
<node CREATED="1535891065189" ID="ID_1233342893" MODIFIED="1535891073512" TEXT="Iterator-Monade">
<node COLOR="#435e98" CREATED="1512925265295" HGAP="103" ID="ID_1502143527" MODIFIED="1535892901782" VSHIFT="-66">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
Thema: <b>Monaden</b>
</p>
</body>
</html></richcontent>
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<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
sind Monaden
</p>
<p>
wirklich hilfreich?
</p>
</body>
</html></richcontent>
<linktarget COLOR="#b26c7a" DESTINATION="ID_1955430588" ENDARROW="Default" ENDINCLINATION="-343;-748;" ID="Arrow_ID_920121069" SOURCE="ID_1590483406" STARTARROW="None" STARTINCLINATION="-38;43;"/>
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<node BACKGROUND_COLOR="#ccb59b" COLOR="#6e2a38" CREATED="1510446351987" ID="ID_855693611" MODIFIED="1535892731992" TEXT="steile These">
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<node CREATED="1510446304314" ID="ID_1203762242" MODIFIED="1510446320689" TEXT="Zustand ist ein Ph&#xe4;nomen der wirklichen Welt"/>
<node CREATED="1510446255552" ID="ID_46197323" MODIFIED="1510446264587" TEXT="funktionale Sprachen sind kaputt by design"/>
<node CREATED="1510446265767" ID="ID_1283184818" MODIFIED="1510446275105" TEXT="nur deshalb brauchts dort Monaden"/>
</node>
<node CREATED="1510446363306" ID="ID_505111674" MODIFIED="1535892582314" TEXT="trotzdem gerechtfertigt?">
<node CREATED="1510446371480" ID="ID_247739078" MODIFIED="1510446394065" TEXT="Klarheit"/>
<node CREATED="1510446394965" ID="ID_1458617201" MODIFIED="1510446398689" TEXT="Trennung"/>
</node>
</node>
<node COLOR="#435e98" CREATED="1512927162098" HGAP="93" ID="ID_1774532014" MODIFIED="1535892928429" TEXT="Einsichten" VSHIFT="37">
<icon BUILTIN="idea"/>
<node CREATED="1512927175056" ID="ID_516152902" MODIFIED="1518487921098" TEXT="nicht das Gelbe vom Ei">
<node CREATED="1512927204460" ID="ID_1166808329" MODIFIED="1518487921098" TEXT="kein wirkliches Design-Pattern"/>
<node CREATED="1512927213962" ID="ID_1374430987" MODIFIED="1518487921098" TEXT="es fehlt die Nennkraft"/>
</node>
<node CREATED="1512927667023" ID="ID_67694617" MODIFIED="1518487921098" TEXT="Probleme">
<node CREATED="1512927676973" ID="ID_1019834257" MODIFIED="1518487921098" TEXT="Mondaden sind eine rein technische L&#xf6;sung"/>
<node CREATED="1512927687844" ID="ID_1680797364" MODIFIED="1518487921098" TEXT="sie vereinigen Themen ohne innere Verwadtschaft"/>
<node CREATED="1512927766769" ID="ID_943419159" MODIFIED="1518487921098" TEXT="Zusammenspiel gebundener Funktionen">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
...bindet die Betrachtung auf einen technischen Level,
</p>
<p>
und f&#252;hrt dazu, da&#223; die Abstraktion undicht wird
</p>
</body>
</html></richcontent>
</node>
<node CREATED="1512927978133" ID="ID_1491853321" MODIFIED="1518487921098" TEXT="passen schlecht in C++">
<node CREATED="1512928064858" ID="ID_1221151193" MODIFIED="1518487921098" TEXT="entweder massiv Metaprogrammierung"/>
<node CREATED="1512928075920" ID="ID_491825441" MODIFIED="1518487921098" TEXT="oder man schafft ein runtime-Meta-System"/>
</node>
</node>
<node CREATED="1512928100557" ID="ID_767453821" MODIFIED="1518487921098" TEXT="n&#xfc;tzlich">
<node CREATED="1512928114707" ID="ID_21920250" MODIFIED="1518487921098" TEXT="um Zustand auszukoppeln">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
genau der Umstand,
</p>
<p>
da&#223; funktionale Sprachen von einer Zustands-Phobie getrieben sind,
</p>
<p>
macht Monaden n&#252;tzlich, um inh&#228;renten Zustand wegzuabstrahieren.
</p>
<p>
Das kann genutzt werden, um den Zustand einer Wechselwirkung
</p>
<p>
nach einer Seite der Glieder auszukoppeln.
</p>
</body>
</html></richcontent>
</node>
<node CREATED="1512928357202" ID="ID_360277857" MODIFIED="1518487921098" TEXT="um Konfigurierbarkeit zu schaffen"/>
<node CREATED="1512928258312" ID="ID_1469652928" MODIFIED="1518487921098" TEXT="um technische Details zu entflechten"/>
</node>
<node BACKGROUND_COLOR="#ccb59b" COLOR="#6e2a38" CREATED="1512928287812" ID="ID_212632305" MODIFIED="1535892918047" TEXT="Fazit">
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<icon BUILTIN="yes"/>
<node CREATED="1512928291555" ID="ID_1651357350" MODIFIED="1518487921098" TEXT="nur ein &#xbb;Monaden-Motiv&#xab; nutzen"/>
<node CREATED="1512928301386" ID="ID_589389944" MODIFIED="1518487921098" TEXT="das Builder-Pattern in den Vordergrund stellen">
<node CREATED="1512928322567" ID="ID_462235185" MODIFIED="1518487921098" TEXT="Builder ist ein wirkliches Pattern">
<icon BUILTIN="idea"/>
</node>
</node>
</node>
</node>
</node>
<node CREATED="1535891101400" ID="ID_673846521" MODIFIED="1535891107371" TEXT="IterExplorer">
<node CREATED="1535891108199" ID="ID_1302968576" MODIFIED="1535891111234" TEXT="erster Anlauf">
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<icon BUILTIN="ksmiletris"/>
</node>
<node CREATED="1535891114310" ID="ID_799781858" MODIFIED="1535891120950" TEXT="ist h&#xe4;&#xdf;lich">
<icon BUILTIN="smily_bad"/>
</node>
<node CREATED="1535891125877" ID="ID_131112709" MODIFIED="1535891129432" TEXT="nur einmal verwendet">
<node CREATED="1535891130164" ID="ID_1396398506" MODIFIED="1535891135892" TEXT="f&#xfc;r das Job-Planning">
<icon BUILTIN="info"/>
</node>
</node>
</node>
<node CREATED="1512925334501" FOLDED="true" ID="ID_409327286" MODIFIED="1535892997921" TEXT="IterExplorer-Design">
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</node>
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<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
geh&#246;rt zu dem Themenkomplex &quot;itertools&quot;
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<p>
Python hat das auch, Java neuerdings auch
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</body>
</html></richcontent>
</node>
<node CREATED="1512925438992" ID="ID_1273839582" MODIFIED="1518487921098" TEXT="bisher nicht verwendet"/>
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<node CREATED="1512925508183" ID="ID_1861334930" MODIFIED="1518487921098" TEXT="ohne innere Notwendigkeit"/>
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<node CREATED="1512925769363" ID="ID_582578425" MODIFIED="1518487921098" TEXT="geht gegen die Natur der Dinge"/>
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<node CREATED="1512925805416" MODIFIED="1518487921098" TEXT="build(...).wrapping(...)"/>
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</node>
<node CREATED="1512925552137" ID="ID_43735106" MODIFIED="1518487921098" TEXT="wollte den Stack vermeiden">
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<node CREATED="1512925574782" ID="ID_22338010" MODIFIED="1518487921098" TEXT="Idee Inline-stack">
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<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
...will sagen, es ist klar, wie man sowas machen kann.
</p>
<p>
Seinerzeit war mir das auch klar, aber ich wollte es nicht gleich ausprogrammieren.
</p>
<p>
Inzwischen kam dann das Thema UI-Coordinaten, und dort <i>habe</i>&#160;ich es ausprogrammiert,
</p>
<p>
und zwar direkt in die Low-Level-Schicht integriert, was nicht schlecht ist,
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<p>
da eine Abstraktion hier sehr technisch werden w&#252;rde
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</node>
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<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1535894221015" ID="ID_977007729" MODIFIED="1535894381051" TEXT="Bug im Filter-Layer?">
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<node CREATED="1535894252195" ID="ID_373085595" MODIFIED="1535894291490" TEXT="kommt mir komisch vor; pullFilter() sollte doch danach kommen"/>
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<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
...von der entsprechenden Methode im Transformer
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</body>
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</richcontent>
<icon BUILTIN="smiley-oh"/>
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<node CREATED="1535894292222" ID="ID_1328694952" MODIFIED="1535894370745" TEXT="vermutlich im Test &#xfc;bersehen">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
...hatte die Notwendigkeit hierf&#252;r seinerzeit w&#228;hrend der Tests entdeckt,
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<p>
und im Unit-Test nur f&#252;r die Kombination Transformer + Explorer abgedeckt....
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<icon BUILTIN="ksmiletris"/>
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</node>
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<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<ul>
<li>
Suche wird geleitet durch die ViewSpecDSL
</li>
<li>
hinter dem (opaquen) TreeExplorer steckt die konkrete UI-Topologie
</li>
</ul>
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</html>
</richcontent>
</node>
<node CREATED="1535893231835" ID="ID_637460742" MODIFIED="1535893326431" TEXT="Such-Pr&#xe4;dikate auf EventLog">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
EventLog ist ein Test-Hilfsmittel,
</p>
<p>
um Unit-Tests &#252;ber UI-Bus-Interaktionen schreiben zu k&#246;nnen.
</p>
<p>
Es gibt hierzu Test-Varianten, die jeden Aufruf in ein internes Log notieren.
</p>
<p>
Im Test verwendet man dann eine Pattern-Such-DSL,
</p>
<p>
hinter der sich eine verkettete Suche mit Backtracking verbirgt
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</body>
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</richcontent>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1535893353955" ID="ID_1665477644" MODIFIED="1535893590393" TEXT="bestehende L&#xf6;sung umstellen">
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<icon BUILTIN="pencil"/>
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<node CREATED="1535893623463" ID="ID_371015216" MODIFIED="1535893629458" TEXT="als State Core im Iterator"/>
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</node>
<node CREATED="1535893707036" ID="ID_257876647" MODIFIED="1535893716894" TEXT="Aufgabe: Filter erweiterbar machen">
<node CREATED="1535893718194" ID="ID_872370459" MODIFIED="1535893743691" TEXT="analog zum Filter in den Itertools"/>
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<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
sofern l&#228;ngerfristig Itertools durch TreeExplorer abgel&#246;st werden k&#246;nnte
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</body>
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</node>
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</node>
<node CREATED="1535893799799" ID="ID_706866636" MODIFIED="1535893804419" TEXT="Auswertungs-Stack">
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<node CREATED="1535894074891" ID="ID_1972842519" MODIFIED="1535894075798" TEXT="== aktuel wirksamer Suchfilter"/>
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</node>
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<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
<u>Invariante</u>: <b>pullMatch</b>()
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</richcontent>
<icon BUILTIN="yes"/>
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</node>
</node>
</node>
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<node CREATED="1482524641484" ID="ID_1651495185" MODIFIED="1518487921096" TEXT="Architektur">
<node CREATED="1531419748046" ID="ID_1791265013" MODIFIED="1531419752937" TEXT="Lebenszyklus">
@ -33154,7 +33613,7 @@
</node>
</node>
</node>
<node COLOR="#990000" CREATED="1522457000411" ID="ID_736034555" MODIFIED="1531584013653" TEXT="Basis-System">
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<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1522457035478" ID="ID_1692167558" MODIFIED="1522556857858" TEXT="#1133 dependable base system">
@ -33529,7 +33988,7 @@
</body>
</html></richcontent>
</node>
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<node CREATED="1533997901765" ID="ID_361019548" MODIFIED="1535891607125">
<richcontent TYPE="NODE"><html>
<head>
@ -34090,166 +34549,14 @@
<icon BUILTIN="smily_bad"/>
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<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
Thema: <b>Monaden</b>
</p>
</body>
</html></richcontent>
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<node CREATED="1512925342773" ID="ID_1304424851" MODIFIED="1518487921098" TEXT="unbefriedigend"/>
<node CREATED="1512925350379" ID="ID_21486020" MODIFIED="1518487921098" TEXT="zu offen und flexibel"/>
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<node CREATED="1512925366562" ID="ID_581707193" MODIFIED="1518487921098" TEXT="daher wie ein Gestr&#xfc;pp"/>
</node>
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<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
geh&#246;rt zu dem Themenkomplex &quot;itertools&quot;
</p>
<p>
Python hat das auch, Java neuerdings auch
</p>
</body>
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</node>
<node CREATED="1512925438992" ID="ID_1273839582" MODIFIED="1518487921098" TEXT="bisher nicht verwendet"/>
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<node CREATED="1512925805416" MODIFIED="1518487921098" TEXT="build(...).wrapping(...)"/>
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</node>
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<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
...will sagen, es ist klar, wie man sowas machen kann.
</p>
<p>
Seinerzeit war mir das auch klar, aber ich wollte es nicht gleich ausprogrammieren.
</p>
<p>
Inzwischen kam dann das Thema UI-Coordinaten, und dort <i>habe</i>&#160;ich es ausprogrammiert,
</p>
<p>
und zwar direkt in die Low-Level-Schicht integriert, was nicht schlecht ist,
</p>
<p>
da eine Abstraktion hier sehr technisch werden w&#252;rde
</p>
</body>
</html></richcontent>
</node>
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<node CREATED="1512927162098" HGAP="93" ID="ID_1774532014" MODIFIED="1518487921098" TEXT="Einsichten" VSHIFT="37">
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</node>
<node CREATED="1512927667023" ID="ID_67694617" MODIFIED="1518487921098" TEXT="Probleme">
<node CREATED="1512927676973" ID="ID_1019834257" MODIFIED="1518487921098" TEXT="Mondaden sind eine rein technische L&#xf6;sung"/>
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<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
...bindet die Betrachtung auf einen technischen Level,
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<p>
und f&#252;hrt dazu, da&#223; die Abstraktion undicht wird
</p>
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</node>
<node CREATED="1512927978133" ID="ID_1491853321" MODIFIED="1518487921098" TEXT="passen schlecht in C++">
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</node>
</node>
<node CREATED="1512928100557" ID="ID_767453821" MODIFIED="1518487921098" TEXT="n&#xfc;tzlich">
<node CREATED="1512928114707" ID="ID_21920250" MODIFIED="1518487921098" TEXT="um Zustand auszukoppeln">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
genau der Umstand,
</p>
<p>
da&#223; funktionale Sprachen von einer Zustands-Phobie getrieben sind,
</p>
<p>
macht Monaden n&#252;tzlich, um inh&#228;renten Zustand wegzuabstrahieren.
</p>
<p>
Das kann genutzt werden, um den Zustand einer Wechselwirkung
</p>
<p>
nach einer Seite der Glieder auszukoppeln.
</p>
</body>
</html></richcontent>
</node>
<node CREATED="1512928357202" ID="ID_360277857" MODIFIED="1518487921098" TEXT="um Konfigurierbarkeit zu schaffen"/>
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<node CREATED="1512928287812" ID="ID_212632305" MODIFIED="1518487921098" TEXT="Fazit">
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