Map.get() should throw if there is no value, and we should also offer tryGet()

[eladb]

I tried this:

let m = { "foo" => "bar" };
let s: str = m.get("zoo");
assert(s.length > 0);

This happened:

ERROR: Cannot read properties of undefined (reading 'length')

I expected this:

I expected this to throw.

I also expected to find tryGet() to return T?.

Is there a workaround?

If we assign the result to a T?, it works.

let m = { "foo" => "bar" };
let s: str? = m.get("zoo");
assert(s == nil);

Component

SDK

Wing Version

No response

Node.js Version

No response

Platform(s)

No response

Anything else?

No response

Community Notes

• Please vote by adding a 👍 reaction to the issue to help us prioritize.
• If you are interested to work on this issue, please leave a comment.

[giovanni-orciuolo]

Hello! Can I work on this issue? I want to get my hands dirty with the codebase and this seems like a good starting point.

[ekeren]

Yes, it does make a lot of sense to start with this

[ekeren]

I've assigned it to you @giovanni-orciuolo , let me know if you need any help with this

[revitalbarletz]

Hi @giovanni-orciuolo ! How about joining our slack channel? https://t.winglang.io/slack

[github-actions]

Hi,

This issue hasn't seen activity in 60 days. Therefore, we are marking this issue as stale for now. It will be closed after 7 days.
Feel free to re-open this issue when there's an update or relevant information to be added.
Thanks!

[staycoolcall911]

Keep

[monadabot]

Congrats! 🚀 This was released in Wing 0.38.0.