EXREX vs ulid

EXREX

Irregular methods on regular expressions (by asciimoo)

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ulid

Universally Unique Lexicographically Sortable Identifier (ULID) in Python 3 (by ahawker)

Random Generator Python Python3 Ulid Uuid

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EXREX		ulid
	Project
3	Mentions	4
852	Stars	644
-	Growth	-
3.7	Activity	0.0
4 months ago	Latest Commit	about 1 year ago
Python	Language	Python
GNU Affero General Public License v3.0	License	Apache License 2.0

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

EXREX

Posts with mentions or reviews of EXREX. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-04-22.

Generate text based on regex
1 project | /r/coolgithubprojects | 12 Mar 2023
Is there a PHP library that generates all possible matches for a simple subset of regex
1 project | /r/webdev | 22 May 2022

or you could take exrex and port it to PHP
More advanced random option?
2 projects | /r/espanso | 22 Apr 2022

I'm able to use the python module/app exrex to do something like

ulid

Posts with mentions or reviews of ulid. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-08-05.

Plan B for UUIDs: double AES-128
4 projects | news.ycombinator.com | 5 Aug 2022

I really like ULID for this problem (e.g: https://github.com/ahawker/ulid)
- same number of bytes as UUID
- start with a date, so has great locality. Plus you get extra information in the uid that you can extract.
- can be created from an existing date or uuid, and exported to a uuid, so there is a migration path
New UUID Formats from IETF
12 projects | news.ycombinator.com | 12 Jun 2022

As the author of a popular ULID implementation in python[1], the spec has no stewardship anymore. The specification repo[2] has plenty of open issues and no real guidance or communication beyond language implementation authors discussing corner cases. The monotonic functionality is ambiguous (at best) and is implemented differently per-languages [3].
Functionality, UUIDv7 might be the _same_ but the hope would be for a more rigid specification for interoperability.
[1]: https://github.com/ahawker/ulid
[2]: https://github.com/ulid/spec
[3]: https://github.com/ulid/spec/issues/11
Sortable Collision-Free UUIDs
10 projects | news.ycombinator.com | 3 May 2021

Looks similar to ULID[0] (I am the author of a popular python implementation[1]).
It appears to have a similar constraint that two ID's generated within the same timestamp (ms, ns) have no strong guarantee of ordering. That might not be a deal breaker depending on your use case but something to consider.
* https://github.com/ulid/spec
* https://github.com/ahawker/ulid
Usando ULIDs para criar ordem em dados não ordenados
3 projects | dev.to | 12 Apr 2021