If you can start the tasks in one place, you might benefit from the

Task.group

helper.

https://libs.toit.io/core/task/class-Task#group(2%2C0%2C0%2Crequired)

Reverse engineered what was going on with the ublox 6M and why it wasn't getting a fix. Anyone keen to give us a hand to test?

I am having trouble setting artemis up on a new laptop. When I do the

artemis auth login

and follow the link, the browser refuses to redirect after I enter the login details ..

I will try to reproduce. Hopefully today. If not tomorrow

ok, thanks

Is there an efficient way to test a Deque for length of non-null items? I have a use case where I want to use the reserve method to preallocate but I need to test the size of contents. Using reserve makes it so that 'mydeque.size' returns the reserved length, even with no contents.

I think that's actually a bug in the implementation. Reserve should only reserve the space and not change the size.

Looking at the code, I can relatively easily fix it for

add-first

but not for

add

.

I think I have it now.

Glad to hear. That was my expectation which is why the first test loop results surprised me. Thanks for looking at it.

PR is uploaded

Any luck reproducing? This is what I got.. https://cdn.discordapp.com/attachments/918498540232253483/1436823446293319761/redirect.png?ex=6911019c&is=690fb01c&hm=78f449ddb45b9e6b12890ef27ac6e10b94077fafe91e6daa5b7259fa491825eb&

This is via google https://cdn.discordapp.com/attachments/918498540232253483/1436825663184044314/google.png?ex=691103ad&is=690fb22d&hm=4c27cd2d60ef14e3f45bafeae4868b046bbd8c8ca7faeb978083c0a6335a90a7&

Argh. Completely forgot. Sorry. Same: hopefully today or tomorrow.

I think I have an idea of what's going on. We bought a custom domain on supabase and apparently the login uses that one now. Will try to fix.

Could you try again? I think I have updated the oauth settings.

All Fixed

I'm having some trouble getting a characteristic from a smart device. Heart Measurement (0x2A37) isn't read, only notified (you can see the corresponding exception in JAG monitor). Therefore, reading is replaced with subscribing. I tested this in Flutter using the flutter_reactive_ble package, and it works. I noticed that ble of Toit also supports notifications and subscribing, but it's unclear how to use this mechanism, and the examples don't explain it. If it's easy, could you please clarify how it works? Thanks in advance. JAG monitor

[jaguar] INFO: program 94e7226f-cba3-e548-86bb-a0233c7c1731 started
address->#[0x00, 0x07, 0x35, 0x00, 0xcf, 0x83, 0x72]
device connected...
Exception: Characteristic does not support reads
[jaguar] INFO: program 94e7226f-cba3-e548-86bb-a0233c7c1731 stopped

https://cdn.discordapp.com/attachments/918498540232253483/1437368694383710249/find_device.toit?ex=6912fd69&is=6911abe9&hm=a185c0d9bde3b335ad0cdc3ba78157d26aef5730690ec9a6923c37c40a1b0e3f&

It should be as simple as:

heart-characteristic.subscribe
while true:
  new-value := heart-characteristic.wait-for-notification

I don't remember what happens if you don't call

wait-for-notification

enough. Whether the values are queued (using up memory), or discarded. If you only need one value, you should just

subscribe

, then

wait-for-notification

, and then

unsubscribe

.

Slightly delayed weekly update: - started to rewrite the uart driver. Hopefully this will make it work on the C6. - wrote a PR to replace our double->string conversion function. We should now get the shortest accurate string when doing a

to-string

or

stringify

. In the process deprecated all

{num|int|float}.stringify

functions that took arguments and redirect them to

to-string XXX

. (`to-string`: explicit well defined conversion. `stringify`: give me a string representation; maybe for debug).

I'm trying to figure out some behavior that I'm not understanding. I have the following classes:

// Base class for all AST nodes.
class AstNode:
  line_/int
  col_/int

  constructor .line_ .col_:

  // A simple stringify for debugging.
  // Subclasses should override this.
  stringify -> string:
    return "AST Node: ($line_:$col_)"


// --- File Nodes ---

class LibFileNode extends AstNode:
  entries/List // List<NamedSpecNode | NamedDataNode>

  constructor line_/int col_/int .entries:
    super line_ col_
  
  stringify -> string:
    return "LibFileNode: entries:$entries"

When I run a parsing function that returns an instance, called

result

of

LibFileNode

I can validate this with

result is LibFileNode

which does return

true

, however if I try and run

print result.entries

I get an error saying:

error: Class 'AstNode' does not have any method 'entries'

Shouldn't the

Instance.field

getter work by default?

It should.

What happens if you just

print result

?

Oh wait.

You are just doing an

is

check? Unfortunately we haven't implemented automatic downcasting yet. Use

(result as LibFileNode).entries

Thank you. That did it. On a related note, is there a way to access the name of the class to which an object belongs? For example in the case of my

result

example is there a function that would return

LibFileNode

? Thinking of something like

typeof

in other languages.

No. The names of classes take too much space. You can use

jag toit tools snapshot ...

to get the name from an id. (Don't remember the exact command)

Do you think the

http

package can implement long-polling?

I don't see any reason why not. I just skimmed the sources and didn't see any timeout. If there is one I missed we could probably make it configurable. Did you already try it?