Suggestion: operator for getting the interval between two dates

[saoirse-a]

It would be beneficial to not only be able to compare dates, but also get the interval in seconds between them, to compare that to other integer values (e.g. to evaluate if two dates are within a certain interval of each other).

I can imagine a couple of ways this could be done:

• Dates could support subtract, returning the interval between them
• Dates could support add/subtract with integers, returning a new date offset by that interval
• A new operator could take two dates and evaluate to the integer interval between them (equivalent to subtract but using a different operator)

[divarvel]

yeah, improved support for dates would be great (a use-case that also came up is local time check, eg for operations that should only be allowed within office hours for instance).

Since biscuit v3.3 is just out, we don’t have a new release planned immediately, but that’s definitely something that could be tried out with the new FFI feature, in order to get concrete feedback.

One thing that we need to be careful about (to be clear, it’s not an issue with the 3 suggestions above) is API and implementation simplicity, especially in order to ensure consistency across implementations