By coincidence, I was just reading https://go.dev/blog/toolchain and
realized I put `GOTOOLCHAIN=local` into my ~/.confiig/go/env a while ago,
so as to not have the Go tool transparently download different versions. If
I remove that, I can indeed reproduce the behavior you are seeing.
So, my recommendation for experimenting would be to run `go env -w
GOTOOLCHAIN=local`.
On Tue, Aug 22, 2023 at 12:51 AM Hein Meling <hein.mel...@gmail.com> wrote:
> Thanks Axel for your reply. That's interesting. I'm able to run your
> example just fine. However, using a different go.mod file with the content
> below (and a longer code example with iteration over a LevelDB thing... not
> able to provide the code), I get:
>
> % gotip version
> go version go1.21.0 darwin/arm64
>
> % gotip run iter.go
> # command-line-arguments
> ./iter.go:48:25: cannot range over SnapshotHash(ldb, nonce) (value of type
> Seq2[uint64, error])
>
> module iter
>
> go 1.21.0
>
> require (
> github.com/opencoff/go-fasthash v0.0.0-20180406145558-aed761496075
> github.com/syndtr/goleveldb v1.0.0
> )
>
> require (
> github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db // indirect
> golang.org/x/net v0.10.0 // indirect
> golang.org/x/sys v0.11.0 // indirect
> golang.org/x/text v0.12.0 // indirect
> )
>
>
> On Sunday, August 20, 2023 at 10:59:20 PM UTC-7 Axel Wagner wrote:
>
>> Hm. For me, it still enables the rangefunc experiment, even though go.mod
>> says go 1.21:
>>
>> mero@vetinari ~/tmp/x$ gotip version
>> go version devel go1.21-ca691a8566d Tue Jul 18 10:30:20 2023 -0400 (w/
>> rangefunc) linux/amd64
>> mero@vetinari ~/tmp/x$ cat go.mod
>> module x
>>
>> go 1.21
>> mero@vetinari ~/tmp/x$ cat x.go
>> package main
>>
>> import "fmt"
>>
>> func main() {
>> s := []int{1, 2, 3}
>> for v := range All(s) {
>> fmt.Println(v)
>> }
>> }
>>
>> func All[T any](s []T) func(yield func(T) bool) bool {
>> return func(yield func(T) bool) bool {
>> for _, v := range s {
>> if !yield(v) {
>> return false
>> }
>> }
>> return true
>> }
>> }
>> mero@vetinari ~/tmp/x$ gotip run x.go
>> 1
>> 2
>> 3
>>
>> On Fri, Aug 18, 2023 at 10:54 PM Hein Meling <hein....@gmail.com> wrote:
>>
>>> Hi all,
>>>
>>> I wanted to play around with the new range func CL
>>> <https://github.com/golang/go/issues/61405>.
>>>
>>> Doing simple stuff works just fine, but if I need to import packages to
>>> construct my custom iterator func, the go/gotip command insists on a go.mod
>>> file, which effectively resets the go version to 1.21.0 (due to go.mod),
>>> instead of the "(w/ rangefunc)" CL.
>>>
>>> Anyone know any workarounds for this?
>>>
>>> Thanks,
>>> :) Hein
>>>
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>>>
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