The following code fails to compile: double sim(Document doc, string query) { alias Tuple!(double, "wij", double, "wiq") Weights; Document q = Document.fromString(query); Weights[] wi; foreach (s; StrFilt(query)) wi ~= Weights(doc.termFreq(s) * invDocFreq(s), q.termFreq (s) * invDocFreq(s)); return reduce!((double acc, Weights w) { return acc + 0; /*w.wij * w.wiq;*/ })(0.0, wi) / (sqrt(reduce!((double acc, Weights w) { return acc + 0; / *sqr(w.wij);*/ })(0.0, wi) * sqrt(reduce!((double acc, Weights w) { return acc + 0; / *sqr(w.wiq);*/ }(0.0, wi))))); }
and DMD 2.046 shows the following messages: ir.d(119): Error: delegate std.algorithm.__dgliteral3 cannot access frame of fun ction __dgliteral3 ir.d(232): Error: template instance ir.Index.sim.Reduce!(delegate double(double acc, Tuple!(double,"wij",double,"wiq") w) { return acc + 0; } ) error instantiating ir.d(119): instantiated from here: reduce!(delegate double (double acc, Tu ple!(double,"wij",double,"wiq") w) { return acc + 0; } ) Is it my fault because of some misunderstanding or other error, or should I report it as a bug in compiler/library? The same function compiled well with reduce on StrFilt(query) instead of Weights. I attach the full source. begin 644 ir.d M:6UP;W)T('-T9"YS=&1I;SL-"FEM<&]R="!S=&0N<W1R:6YG.PT*:6UP;W)T M('-T9"YC;VYV.PT*:6UP;W)T('-T9"YF:6QE.PT*:6UP;W)T('-T9"YM871H M.PT*:6UP;W)T('-T9"YA;&=O<FET:&T[#0II;7!O<G0@<W1D+G1Y<&5C;VYS M.PT*#0I4('-Q<BA4*2A4('@I#0I[#0H)<F5T=7)N('@@*B!X.PT*?0T*#0IC M;&%S<R!3=')&:6QT#0I[#0H)<W1A=&EC(&)O;VQ;<W1R:6YG72!P<F5P<SL- M"@T*"7-T871I8R!T:&ES*"D-"@E[#0H)"69O<F5A8V@@*'-T<c...@6r`b(BP@ M(F$B+"`B=&AE(BP@(G=H870B+"`B8GDB+"`B;V8B+"`B86YD(BP@(F]R(BP@ M(G1O(BP@(F9R;VTB+"`B9&\B+"`B>65S(BP@(FYO(BP@(FYO="(L(")B=70B M+"`B:70B+"`B:6XB+"`B:2(L(")Y;W4B+"`B:&4B+"`B<VAE(BP@(G1H97DB M+"`B86TB(%TI#0H)"7L-"@D)"7!R97!S6W-T<ET@/2!T<G5E.PT*"0E]#0H) M?0T*#0H)<W1A=&EC(&]P0V%L;"AS=')I;F<@;&EN92D-"@E[#0H)"7)E='5R M;B`N9FEL=&5R(2...@h82d@>R!R971U<f...@82`a:6X@<')E<',[('TI*'-P;&ET M*&QI;F4N=&]L;W=E<BYT<b...@b82uz(BP@(B`B+"`B8R(I+G-T<FEP*2D[#0H) M?0T*?0T*#0IC;&%S<R!$;V-U;65N=`T*>PT*"7-T<FEN9R!F:6QE;F%M93L- M"@EU:6YT('=O<F1S.PT*"75I;G1;<W1R:6YG72!F<F5Q<SL-"@EU:6YT(&UA M>$9R97$[#0H)#0H)=F]I9"!A9&1,:6YE*'-T<FEN9R!L:6YE*0T*"7L-"@D) M9F]R96%C:"`h=v]r...@4w1r1fel="AL:6YE*2D-"@D)>PT*"0D)*RMF<F5Q M<UMW;W)D73L-"@D)?0T*"7T-"@T*"79O:6...@8v%l8tua>$9R97$H*0T*"7L- M"@D);6%X1G)E<2`](&UI;E!O<R$H(F$@/B!B(BDH9G)E<7,N=F%L=65S*5LP M73L-"@E]#0H-"@ES=&%T:6,@1&]C=6UE;g...@9g)O;49I;&4H<W1R:6YG(&9I M;&5N86UE*0T*"7L-"@D)1&]C=6UE;g...@9&]C(#T@;F5W($1O8W5M96YT.PT* M"0ED;V,N9FEL96YA;64@/2!F:6QE;F%M93L-"@D)875T;R!F:6QE(#T@;F5W M($9I;&4H9FEL96YA;64L(")R(BD[#0H)"69O<F5A8V@@*&QI;F4[(&9I;&4N M8GE,:6YE*0T*"0E[#0H)"0ED;V,N861D3&EN92AT;R%S=')I;F<H;&EN92DI M.PT*"0E]#0H)"61O8RYC86QC36%X1G)E<3L-"@D)<F5T=7)N(&1O8SL-"@E] M#0H)#0H)<W1A=&EC($1O8W5M96YT(&9R;VU3=')I;F<H<W1R:6YG('-T<BD- M"@E[#0H)"41O8W5M96YT(&1O8R`](&YE=R!$;V-U;65N=#L-"@D)9&]C+F%D M9$QI;F4H<W1R*3L-"@D)9&]C+F-A;&--87A&<F5Q.PT*"0ER971U<f...@9&]C M.PT*"7T-"@T*"61O=6)L92!T97)M1G)E<2AS=')I;F<@=&5R;2D-"@E[#0H) M"6EF("AT97)M("%I;B!F<F5Q<RD-"@D)"7)E='5R;B`P+C`[#0H)"7)E='5R M;B!C87-T*&1O=6)l...@9g)E<7-;=&5R;5...@+r!m87a&<F5Q.PT*"7T-"@D- M"@EO=F5R<FED92!S=')I;F<@=&]3=')I;F<H*0T*"7L-"@D)<F5T=7)N(&9I M;&5N86UE.PT*"7T-"GT-"@T*8VQA<W,@26y...@-"GL-"@E$;V-U;65N=%M= M6W-T<FEN9UT@:6y...@[#0h)8F]O;%M$;V-U;65n...@9&]C<SL-"@T*"79O M:6...@861d*$1o8w5m96yt(&1O8RD-"@E[#0H)"6EF("AD;V,@:6...@9&]C<RD- M"@D)"7)E='5R;CL-"@D)9&]C<UMD;V-=(#...@=')U93L-"@D)9F]R96%C:"`H M:V5Y+"!v86qu...@9&]C+F9R97%S*0T*"0E[#0H)"0EI;F1E>%MK97E=('X] M(&1O8SL-"@D)?0T*"7T-"@D-"@ED;W5B;&4@:6YV1&]C1G)E<2AS=')I;F<@ M=&5R;2D-"@E[#0H)"6EF("AT97)M("%I;B!I;F1E>"D-"@D)"7)E='5R;B`P M.PT*"0ER971U<FX@;&]G*&-A<W0H9&]U8FQE*2!D;V-S+FQE;F=T:"`O(&EN M9&5X6W1E<FU=+FQE;F=T:"D[#0H)?0T*#0H)9&]U8FQE('-I;2A$;V-U;65N M="!D;V,L('-T<FEN9R!Q=65R>2D-"@E[#0H)"6%L:6%S(%1U<&QE(2AD;W5B M;&4L(")W:6HB+"!D;W5B;&4L(")W:7$B*2!796EG:'1S.PT*"0E$;V-U;65N M="!Q(#...@1&]C=6UE;G0N9G)O;5-T<FEN9RAQ=65R>2D[#0H)"5=E:6=H='-; M72!W:3L-"@D)9F]R96%C:"`H<s...@4w1r1fel="AQ=65R>2DI#0H)"0EW:2!^ M/2!796EG:'1S*&1O8RYT97)M1G)E<2AS*2`J(&EN=D1O8T9R97$H<RDL('$N M=&5R;49R97$H<r...@*b!i;G9$;V-&<F5Q*',I*3L-"@D)<F5T=7)N(`T*"0D) M<F5D=6-E(2...@h9&]U8FQE(&%c...@5v5i9vat<R!W*2![(')E='5R;B!A8V,@ M*R`P.R`O*G<N=VEJ("h...@=ryw:7$[...@?2dh,"XP+"!W:2...@+pt*"0D)*'-Q M<G0H<F5D=6-E(2...@h9&]U8FQE(&%c...@5v5i9vat<R!W*2![(')E='5R;B!A M8V,@*R`P.R`O*G-Q<BAW+G=I:bd[...@?2dh,"XP+"!W:2...@*b!s<7)T*')E M9'5C92$H*&1O=6)L92!A8V,L(%=E:6=H=',@=RD@>R!R971U<f...@86-c("L@ M,#...@+ris<7(H=RYW:7$I.RHO('TH,"XP+"!W:2DI*2DI.PT*"7T-"@D-"@ED M;W5B;&5;1&]C=6UE;G1=(')E=')I979E*'-T<FEN9R!Q=65R>2D-"@E[#0H) M"61O=6)L95M$;V-U;65N=%T@<F5S=6QT.PT*"0EF;W)E86-H("AD;V,L(&([ M(&1O8W,I#0H)"7L-"@D)"7)E<W5L=%MD;V-=(#T@<VEM*&1O8RP@<75E<GDI M.PT*"0E]#0H)"7)E='5R;B!R97-U;'0[#0H)?0T*?0T*#0II;G0@;6%I;BAS M=')I;F=;72!A<F=S*0T*>PT*"6%U=&\@:6YD97@@/2!N97<@26y...@[#0h) M;&ES=&1I<b...@b9&]C<R(L(&1E;&5G871E(&)O;v...@*$1i<D5N=')Y*B!D92D@ M>PT*"0EW<FET96QN*&1E+FYA;64I.R`-"@D):6y...@n861d*$1o8w5m96yt M+F9R;VU&:6QE*&1E+FYA;64I*3L-"@D)<F5T=7)N('1R=64[#0H)?0DI.PT* M"0T*"69O<F5A8V@@*&8[("A3=')&:6QT*&%R9W-;,5TI*2D@>R!W<FET96QN M*&8I.R!]#0H)9F]R96%C:"`H:r...@=cl@:6y...@n<F5T<FEE=F4H87)G<ULQ M72DI#0H)>PT*"0EW<FET969L;b...@b)7,@+3X@)7,B+"!K+"!V*3L-"@E]#0H) ,<F5T=7)N(#`[#0I] ` end