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multi-methods need to be explicitly enabled (#10856)

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* multi-methods need to be explicitly enabled

* update changelog, manual and tutorial
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Miran 2019-03-18 08:21:38 +01:00 • committed by Andreas Rumpf
commit afeca3d9fe
8 changed files with 36 additions and 7 deletions
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3
compiler/cgmeth.nim
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@ -290,6 +290,9 @@ proc generateMethodDispatchers*(g: ModuleGraph): PNode =
var relevantCols = initIntSet()
for col in countup(1, sonsLen(g.methods[bucket].methods[0].typ) - 1):
if relevantCol(g.methods[bucket].methods, col): incl(relevantCols, col)
if optMultiMethods notin g.config.globalOptions:
# if multi-methods are not enabled, we are interested only in the first field
break
sortBucket(g.methods[bucket].methods, relevantCols)
addSon(result,
newSymNode(genDispatcher(g, g.methods[bucket].methods, relevantCols)))