Go: x/mobile/bind: support slices of supported structs

[scisci]

Just want to know if it will ever be possible to support slices of supported. I currently have to write a wrapper object around an array to pass it back and forth between IOS and Go.

[bradfitz]

/cc @crawshaw @hyangah

[hyangah]

It will not be impossible and eventually it should be supported. I don't know anyone who's currently working on this problem.

[dcu]

yeah this is the most frustrating issue for me right now

[weitzj]

Do you have any ideas when this will be done? What I could do?

I tried and failed using: https://golang.org/pkg/container/list/ as an alternative

[ioArchman]

+1
Would highly recommend this as currently falling short without this.

[mpiannucci]

This is stopping me from using gomobile in anything worthwhile at the moment

[ioArchman]

@scisci - If you don't mind can you please share across a gist on how you handle the problem currently as said? My requirement would be to return an array/slice of custom modal class objects with 4 string properties.

[scisci]

hi @ioArchman, I made a quick repo here:

https://github.com/scisci/go-mobile-collection

If you think it can work for you, you will probably want to fork it and modify the render.go function to add/remove the methods you want on your collection wrapper. Feel free to make a comment on the project if you have any questions. Its pretty directly adapted from another tutorial on go generics, which you can find here http://www.onebigfluke.com/2014/12/generic-programming-go-generate.html

Keep in mind, I don't consider this a good solution. It feels hacky working with a wrapper on the objective-c/swift side, but it does work. Really would prefer something that feels more natural.

[ioArchman]

Thanks @scisci. Will look into this and try utilizing for now. Agreed on your last point too.

[scisci]

hi @hyangah, do you have any hints on how this would be technically implemented in case someone wanted to attempt it from outside the gomobile team?

[anacrolix]

👍

[anacrolix]

This is very limiting.

[kmcrawford]

Is this still on the road map? I found this library and would like to use it, but this issue may be keep me from using gomobile.

[kliron]

It seems this is a show-stopper for many people. Are there any plans to support this?

[4h0q]

What's the status of this issue? It has been around for quite a while. It looks like the main show stopper for many people.

CC: @hyangah @crawshaw

[dradtke]

I just ran into this, and it would be great to be able to support slices.

[saurabha5]

Just linking the stack overflow question here : https://stackoverflow.com/questions/44382115/golang-gomobile-tool-for-cross-platform-slices-of-struct-return-type

[nhatlee]

have any update for this issue?

[gituser9]

Will there be any news?

[hyangah]

Currently no one is working on the x/mobile project and adding this feature is not a small project.

Not ideal but need to work around by writing a wrapper package for binding, or using what @scisci mentioned for now.

[gituser9]

Does the project have a future?

[bradfitz]

It's community supported at this point, so its future depends on you. There are others from the community working on it, but not full time.

[MariusVanDerWijden]

Anyone currently working on this? If not, could you give some pointers where to start with this?

[vlachmilan]

As a really slow and dumb bypass, you could serialize the data into JSON, pass the string and unserialize it on the other side. Use this only as a last resort, though.