If I understand right the panic is because the `m := NewMap[string, int]` is a function not a function call and after that you try to assign to this function `m[int]`. This works https://go2goplay.golang.org/p/NOaPH-dJyWd . On Tue, 2021-01-05 at 08:10 -0800, Brian Candler wrote: > I don't know if this is expected, but this (bad) program causes the > go2go playground to give "panic: assertion failed" > > https://go2goplay.golang.org/p/VH5SLJNxw3X > > - I think it's the compiler itself that's panicing, not the runtime > (since it doesn't get as far as the next line). > > ---- > > Aside: my general feeling so far is that the error messages given > from go programs which misapply generic syntax can be very > unhelpful. Here's one example: > https://go2goplay.golang.org/p/m9YUDBTWwpA > > Error given: "missing ',' in type argument list" > Actual problem: a constraint was used in a place where it's not > allowed > -- > 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/aa0acea2-7e52-457b-b22f-92f0e19bf922n%40googlegroups.com > .
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