feat: add p/uuid

[DIGIX666]

I suggest adding a UUID package because I think it could be useful to have it available. I think it can further facilitate traceability and compatibility between different systems and apps as they would have a common standard for identifying entities.

To improve UUID generation, I wanted to add a resolver like Snowflake, but from what I've searched, sync/atomic is not supported on Gno. Is there another similar package that I might have missed ?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.10%. Comparing base (af05780) to head (3a18918).
Report is 6 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2076      +/-   ##
==========================================
- Coverage   63.32%   63.10%   -0.22%     
==========================================
  Files         548      548              
  Lines       78511    81134    +2623     
==========================================
+ Hits        49719    51203    +1484     
- Misses      25438    26511    +1073     
- Partials     3354     3420      +66     

Flag	Coverage Δ
contribs/gnodev	61.11% <ø> (+0.53%)	⬆️
contribs/gnofaucet	14.82% <ø> (ø)
gno.land	67.37% <ø> (+0.18%)	⬆️
gnovm	67.88% <ø> (ø)
misc/genstd	79.72% <ø> (ø)
tm2	62.42% <ø> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[notJoon]

To improve UUID generation, I wanted to add a resolver like Snowflake, but from what I've searched, sync/atomic is not supported on Gno. Is there another similar package that I might have missed ?

There is no other way to guarantee atomicity besides using time in environments where atomic is not supported. If we consider it further, it seems possible to generate a random value (using crypto/rand or not merged yet, but maybe later) like a machine ID, assign it, and then combine it. Of course, this is slightly different from the implementation of Snowflake.

[DIGIX666]

To improve UUID generation, I wanted to add a resolver like Snowflake, but from what I've searched, sync/atomic is not supported on Gno. Is there another similar package that I might have missed ?

There is no other way to guarantee atomicity besides using time in environments where atomic is not supported. If we consider it further, it seems possible to generate a random value (using crypto/rand or not merged yet, but #1933 later) like a machine ID, assign it, and then combine it. Of course, this is slightly different from the implementation of Snowflake.

Thanks for your explanation. I will check the progress of crypto/rand to try to use it.

[zivkovicmilos]

This is super cool, I can already see myself using it :)

I've left a few comments, otherwise it looks good 💯

[moul]

seems not "gno-ified" enough :)

can you also provide some examples, like a screenshot or something so that we can see various generated output examples just by reviewing the PR, please?

[DIGIX666]

seems not "gno-ified" enough :)

can you also provide some examples, like a screenshot or something so that we can see various generated output examples just by reviewing the PR, please?

Output this my last commit 485ce8d:

[DIGIX666]

Finish corrective review

[zivkovicmilos]

Hey @DIGIX666, can you please update this branch with master? 🙏