If the generating Block in the series operator returns something undefined, the series terminates.
If the generating Block in the series operator returns something undefined, the series terminates.

niner/rakudo,dankogai/rakudo,softmoth/rakudo,tony-o/rakudo,tbrowder/rakudo,sjn/rakudo,tbrowder/rakudo,azawawi/rakudo,cognominal/rakudo,ungrim97/rakudo,tony-o/rakudo,b2gills/rakudo,nunorc/rakudo,tbrowder/rakudo,retupmoca/rakudo,zostay/rakudo,retupmoca/rakudo,MasterDuke17/rakudo,samcv/rakudo,lucasbuchala/rakudo,ab5tract/rakudo,skids/rakudo,salortiz/rakudo,ab5tract/rakudo,dwarring/rakudo,tony-o/rakudo,Leont/rakudo,jonathanstowe/rakudo,teodozjan/rakudo,rakudo/rakudo,cognominal/rakudo,sergot/rakudo,tony-o/deb-rakudodaily,awwaiid/rakudo,salortiz/rakudo,ab5tract/rakudo,pmurias/rakudo,jonathanstowe/rakudo,laben/rakudo,jonathanstowe/rakudo,salortiz/rakudo,cognominal/rakudo,Gnouc/rakudo,raydiak/rakudo,rakudo/rakudo,labster/rakudo,samcv/rakudo,retupmoca/rakudo,sjn/rakudo,tbrowder/rakudo,niner/rakudo,teodozjan/rakudo,awwaiid/rakudo,cognominal/rakudo,dankogai/rakudo,samcv/rakudo,tony-o/rakudo,rakudo/rakudo,teodozjan/rakudo,dankogai/rakudo,cygx/rakudo,nbrown/rakudo,cognominal/rakudo,tony-o/deb-rakudodaily,pmurias/rakudo,ugexe/rakudo,paultcochrane/rakudo,Leont/rakudo,zostay/rakudo,usev6/rakudo,niner/rakudo,paultcochrane/rakudo,ugexe/rakudo,labster/rakudo,b2gills/rakudo,nbrown/rakudo,ungrim97/rakudo,LLFourn/rakudo,cygx/rakudo,dankogai/rakudo,tbrowder/rakudo,nunorc/rakudo,sergot/rakudo,rakudo/rakudo,dwarring/rakudo,labster/rakudo,paultcochrane/rakudo,azawawi/rakudo,labster/rakudo,ungrim97/rakudo,cygx/rakudo,teodozjan/rakudo,Gnouc/rakudo,laben/rakudo,b2gills/rakudo,Gnouc/rakudo,sjn/rakudo,MasterDuke17/rakudo,lucasbuchala/rakudo,skids/rakudo,LLFourn/rakudo,paultcochrane/rakudo,Gnouc/rakudo,rakudo/rakudo,zostay/rakudo,pmurias/rakudo,tony-o/rakudo,ab5tract/rakudo,awwaiid/rakudo,b2gills/rakudo,nbrown/rakudo,jonathanstowe/rakudo,usev6/rakudo,skids/rakudo,cygx/rakudo,laben/rakudo,samcv/rakudo,LLFourn/rakudo,sjn/rakudo,zhuomingliang/rakudo,labster/rakudo,skids/rakudo,lucasbuchala/rakudo,nunorc/rakudo,softmoth/rakudo,raydiak/rakudo,skids/rakudo,ungrim97/rakudo,MasterDuke17/rakudo,Leont/rakudo,rakudo/rakudo,nbrown/rakudo,LLFourn/rakudo,zhuomingliang/rakudo,labster/rakudo,tony-o/rakudo,softmoth/rakudo,usev6/rakudo,MasterDuke17/rakudo,usev6/rakudo,dankogai/rakudo,ugexe/rakudo,azawawi/rakudo,ugexe/rakudo,softmoth/rakudo,zostay/rakudo,azawawi/rakudo,lucasbuchala/rakudo,tony-o/deb-rakudodaily,nbrown/rakudo,cygx/rakudo,sjn/rakudo,pmurias/rakudo,ab5tract/rakudo,b2gills/rakudo,tony-o/deb-rakudodaily,Gnouc/rakudo,raydiak/rakudo,sergot/rakudo,LLFourn/rakudo,nunorc/rakudo,dwarring/rakudo,zhuomingliang/rakudo,jonathanstowe/rakudo,salortiz/rakudo,zhuomingliang/rakudo,tony-o/deb-rakudodaily,lucasbuchala/rakudo,tbrowder/rakudo,Gnouc/rakudo,usev6/rakudo,ugexe/rakudo,salortiz/rakudo,awwaiid/rakudo,tony-o/deb-rakudodaily,retupmoca/rakudo,MasterDuke17/rakudo,nbrown/rakudo,MasterDuke17/rakudo,rjbs/rakudo,Leont/rakudo,softmoth/rakudo,rjbs/rakudo,ungrim97/rakudo,raydiak/rakudo,salortiz/rakudo,sergot/rakudo,azawawi/rakudo,paultcochrane/rakudo,niner/rakudo,dwarring/rakudo,samcv/rakudo,laben/rakudo,tony-o/deb-rakudodaily,awwaiid/rakudo,rjbs/rakudo