`adjusting_sub` but for subtracting a `Time`

[weisbrja]

Hi,

I wanted to calculate the duration until the next time that a certain time of day, let's say 12:34 will take place.

I achieved this using the following code:

(Time::MIDNIGHT + (time - now.time())) - Time::MIDNIGHT

where now is the current OffsetDateTime.

However, this could be achieved instead by simply using the existing adjusting_sub, but sadly this method is not public and I wonder why.

Would it be possible to expose adjusting_sub?

Thank you!

[weisbrja]

Sorry, but I overlooked that adjusting_sub only works with Durations. What I meant instead was if it was possible to expose another Method on Time to do basically what my code does.

[jhpratt]

I've just added the following API:

impl Time {
    pub const fn duration_until(self, other: Self) -> Duration { /* ... */ }
    pub const fn duration_since(self, other: Self) -> Duration { /* ... */ }
}