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ChainSearch: test case to scrutinise chained filter reconfiguration

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...and TADAA ... there we get an insidious bug:

we capture *this by reference into the expansion functor,
and then we move *this away, out from the builder into the target....
This commit is contained in:
Fischlurch 2018-09-13 17:50:53 +02:00
parent 29d2c151b3
commit 8aae789b82
2 changed files with 26 additions and 2 deletions
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12
tests/library/iter-chain-search-test.cpp
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@ -152,6 +152,18 @@ namespace test{
.search([](string const& str){ return startsWith (str, "s"); });
///////////////////////////////////////////////////TODO WIP
cout << materialise (search) <<endl;
///////////////////////////////////////////////////TODO WIP
CHECK (search);
search.addStep([](auto filter)
{
string currVal = *filter;
filter.setNewFilter ([=](string const& val){
return val != currVal; });
return filter;
});
///////////////////////////////////////////////////TODO WIP
cout << materialise (search) <<endl;
///////////////////////////////////////////////////TODO WIP
}

16
wiki/thinkPad.ichthyo.mm
View file

@ -31796,6 +31796,18 @@
<linktarget COLOR="#65a7b1" DESTINATION="ID_1044555993" ENDARROW="Default" ENDINCLINATION="70;92;" ID="Arrow_ID_575633930" SOURCE="ID_1532889609" STARTARROW="None" STARTINCLINATION="149;-3;"/>
<icon BUILTIN="button_ok"/>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1536857187385" ID="ID_1180686110" MODIFIED="1536857230548" TEXT="Bug! Referenz auf *this">
<icon BUILTIN="flag-yellow"/>
<node BACKGROUND_COLOR="#fdfdcf" COLOR="#ff0000" CREATED="1536857213605" ID="ID_1051501156" MODIFIED="1536857238050" TEXT="...und dann moved man *this aus dem Builder!!!">
<icon BUILTIN="broken-line"/>
</node>
<node CREATED="1536857284075" ID="ID_887891479" MODIFIED="1536857344032" TEXT="brauche *this...">
<icon BUILTIN="info"/>
<node CREATED="1536857289235" ID="ID_1909570040" MODIFIED="1536857313452" TEXT="in configureFilterChain"/>
<node CREATED="1536857326814" ID="ID_149310473" MODIFIED="1536857328426" TEXT="this-&gt;depth()"/>
<node CREATED="1536857336620" ID="ID_1691329557" MODIFIED="1536857340040" TEXT="this-&gt;stepChain_"/>
</node>
</node>
</node>
<node COLOR="#338800" CREATED="1536018406232" ID="ID_1330264339" MODIFIED="1536326484790" TEXT="Schritte als Funktoren">
<icon BUILTIN="button_ok"/>
@ -32163,7 +32175,7 @@
<node COLOR="#338800" CREATED="1536358204137" ID="ID_1724606451" MODIFIED="1536716878774" TEXT="verwirft den sonstigen Stack komplett"/>
</node>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1536792181982" ID="ID_548701484" MODIFIED="1536792260764" TEXT="search direkt per Pr&#xe4;dikat">
<node COLOR="#338800" CREATED="1536792181982" ID="ID_548701484" MODIFIED="1536846067609" TEXT="search direkt per Pr&#xe4;dikat">
<richcontent TYPE="NOTE"><html>
<head>
@ -32175,7 +32187,7 @@
</body>
</html>
</richcontent>
<icon BUILTIN="flag-yellow"/>
<icon BUILTIN="button_ok"/>
<node CREATED="1536792241949" ID="ID_613611906" MODIFIED="1536792249583" TEXT="setzt direkt nur ein neues Pr&#xe4;dikat"/>
<node CREATED="1536792250124" ID="ID_10955924" MODIFIED="1536792257390" TEXT="spart viel Syntax ein">
<icon BUILTIN="idea"/>