question: chrono support from_num_days_from_ce but jiff is public in crate

[TCeason]

https://docs.rs/chrono/latest/chrono/naive/struct.NaiveDate.html#method.from_num_days_from_ce

It return NaiveDate and I can convert it as i32.

But in jiff pub(crate) fn to_unix_epoch_days(self) -> UnixEpochDays { is public in crate.

Can we support it?

[TCeason]

Now I can use this to replace:

use jiff::civil::Date;
use jiff::Timestamp;
use jiff::Unit;
use jiff::Zoned;
use num_traits::AsPrimitive;

pub const MICROS_PER_SEC: i64 = 1_000_000;

pub trait DateConverter {
    fn to_timestamp_tz(&self, tz: &str) -> Zoned;
}

impl<T> DateConverter for T
where
    T: AsPrimitive<i64>,
{
    fn to_timestamp_tz(&self, tz: &str) -> Zoned {
        // Can't use `tz.timestamp_nanos(self.as_() * 1000)` directly, is may cause multiply with overflow.
        let micros = self.as_();
        let (mut secs, mut nanos) = (micros / MICROS_PER_SEC, (micros % MICROS_PER_SEC) * 1_000);
        if nanos < 0 {
            secs -= 1;
            nanos += 1_000_000_000;
        }
        let ts = Timestamp::new(secs, nanos as i32).unwrap();
        let a = ts.intz(tz).unwrap();
        a
    }
}

fn main() {
    let i: i64 = 1630320462000000;
    let a = i
        .to_timestamp_tz("Asia/Shanghai")
        .date()
        .since((Unit::Day, Date::new(1970, 1, 1).unwrap()))
        .unwrap()
        .get_days();
    println!("{}", a);
}

[BurntSushi]

That looks right to me.

In the future, when filing issues, please focus more on the higher level problem you're trying to solve. :-)