Ian and Andy, looks like the to string conversion works and even does not look ugly. :-)
Thank you so much. пятница, 17 марта 2023 г. в 15:01:31 UTC+3, alex-coder: > Andy, thank you. > > In case there would be a choice between ugly and achievable, I must take > the last one:-) > > Another thing I have found it that it is impossible to use type as a > parameter when you call to a function. > How to pass type to function argument in Go - Stack Overflow > <https://stackoverflow.com/questions/51097211/how-to-pass-type-to-function-argument-in-go> > > Thank you. > > пятница, 17 марта 2023 г. в 02:12:22 UTC+3, Andy Balholm: > >> I would guess that in the case of AST nodes, you're likely more >> interested in the *identity* of the nodes than their *values*. In that >> case, you should use the pointers to the nodes as your map keys. >> >> If the *values* truly are what you care about, use the go/format package >> to convert the node back to source code, and use the resulting string as >> your map key. >> >> On Thursday, March 16, 2023 at 3:24:49 PM UTC-7 alex-coder wrote: >> >>> >> Sure, convert to a string and use that as a map key. >>> :-) no, no, no. it looks very very ugly. >>> >>> четверг, 16 марта 2023 г. в 00:26:35 UTC+3, Ian Lance Taylor: >>> >>>> On Wed, Mar 15, 2023 at 2:16 PM alex-coder <a.gus...@gmail.com> wrote: >>>> > >>>> > Ian, thank you. >>>> > but may be the is any workaround ? >>>> > Use as a key not directly but like a derived from those >>>> interface/structure types ? >>>> > Of course I may declare key like string and use switch + .(type) to >>>> mimic it. >>>> >>>> Sure, convert to a string and use that as a map key. >>>> >>>> By the way, I should say that although you can't use `ast.Field` as a >>>> map key type, you can use `*ast.Field`. Of course then two different >>>> Field values that happen to look exactly the same will get different >>>> map entries. So it kind of depends on what you want to do. >>>> >>>> Ian >>>> >>> -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/1a6849b1-35ae-4d3d-bdd9-28d5b342bcb9n%40googlegroups.com.
