Adding Numeric Comparison Operators to Templates

[cibernox]

Extracted from RFC #388

Rendered

[Turbo87]

yes, please! 🙏

[Turbo87]

I think I would prefer having them supported too

[rwjblue]

👋 Just a quick update here. We discussed this in todays core team meeting, and are generally in favor. We also strongly that {{lte}} and {{gte}} should be included here. There are a few details that we want to chat through around just what that means, specifically around the equality side of things. We just landed the {{eq}} / {{neq}} RFC which very intentionally uses === style equality, and it seems pretty odd conceptually for {{lte}} to be referring to a different kind of equality than {{eq}} does.

Basically, the question is, should {{lte}} (for example) be essentially {{or (lt first second) (eq first second)}}? It seems like the answer ought to be "yes", but this means a slightly different thing than >= in JavaScript (since >= refers to == style equality). It seems somewhat unlikely to be a giant issue, but we do want to make sure we have rationalized the answer properly.

We plan to discuss this with the GlimmerVM team and again at next weeks core team meeting, hopefully I'll have another update for folks next week.

[mixonic]

Suggested change

	Equivalent of <arg1> < <arg2>
	This is identical to the `{{lt}}` helper in `ember-truth-helpers`
	Equivalent of `<arg1> < <arg2>`.
	This is identical to the `{{lt}}` helper in `ember-truth-helpers`.

[mixonic]

Suggested change

	Equivalent of <arg1> <= <arg2>
	This is identical to the `{{lte}}` helper in `ember-truth-helpers`
	Equivalent of `<arg1> <= <arg2>`.
	This is identical to the `{{lte}}` helper in `ember-truth-helpers`.

[rwjblue]

We discussed this at todays core team meeting, and with @pzuraq's recent updates (adding gte/lte) we are happy to move this into final comment period. 🎉

@locks - Is going to update some materials for "How we teach this" (that will have to be done prior to merging), but we don't think it will be an issue for the final comment period itself.

[NullVoxPopuli]

has this landed?