# New version of the units package v0.12

**URL:** <https://swi-prolog.discourse.group/t/new-version-of-the-units-package-v0-12/8993>\
**Category:** Pack\
**Created:** [May 11, 2025, 6:53pm UTC](https://swi-prolog.discourse.group/t/new-version-of-the-units-package-v0-12/8993 "2025-05-11T18:53:26Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![ridgeworks](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/ridgeworks/32/886_2.png) [@ridgeworks](https://swi-prolog.discourse.group/u/ridgeworks)\
**Post date:** [June 15, 2025, 5:03pm UTC](https://swi-prolog.discourse.group/t/new-version-of-the-units-package-v0-12/8993/21 "2025-06-15T17:03:52Z")

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> [@kwon-young](#):
>
> But I think it would cost a huge amount of memory since we have so many units.

Without looking at the deatils, would it really be “huge”? How many units; a few hundred times number of prefixes(25?)? That’s quite a large number of pairs to consider, but how many pairs with a common ancestor to be memoized?

> [@kwon-young](#):
>
> I’ll annouce it when it is ready and I think it will be better for you to test it then.

Happy to wait - no point working with a moving target.

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