There are no conversions happening. In the script, "output" is a regular JavaScript object, with all the behavior you would expect.
On the C++ side, "output" is a map<string, string>, but "output_obj" is a JavaScript object created from that map (via the WrapMap(output) call), and that's what's exposed to the script. On Fri, Jun 30, 2017 at 3:31 PM, wxz <xzwang2...@gmail.com> wrote: > a follow up question, in the script, the 'output' map is used as > map<string, int>: > > output[request.host] = 1; > output[request.host]++ > > however, it's a map<string, string> in c++ side, which part of the c++ > code handles such conversion? > > > On Thursday, June 29, 2017 at 5:07:20 PM UTC-4, Jakob Kummerow wrote: > >> The equivalent of options.verbose is options["verbose"] (note the >> quotes). Does that help? >> >> On Thu, Jun 29, 2017 at 10:07 PM, wxz <xzwan...@gmail.com> wrote: >> >>> hi all, >>> >>> there are two maps used in this example, one for 'options', one for >>> 'output'. My question is, why is that in the script, the brackets [] works >>> for 'output', but not for 'options'? >>> >>> For example, if change the line: >>> options.verbose ===> options[verbose] >>> it returns error: verbose is not defined >>> >>> However, 'output[request.host]' is perfectly fine. >>> >>> The two maps are installed with the same code, the wrap/unwrap are the >>> same, what's the difference? >>> >>> I guess my confusion is what exactly does bracket mean here? Does it >>> invoke the named property interceptor? >>> >>> -- >>> -- >>> v8-users mailing list >>> v8-u...@googlegroups.com >>> http://groups.google.com/group/v8-users >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "v8-users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to v8-users+u...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- > -- > v8-users mailing list > v8-users@googlegroups.com > http://groups.google.com/group/v8-users > --- > You received this message because you are subscribed to the Google Groups > "v8-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- -- v8-users mailing list v8-users@googlegroups.com http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
