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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