chrono 0.5 Duration

[fsktom]

See chronotope/chrono#1137

When they do this, I'll have to probably rename chrono::Duration to whatever they decide on (currently TimeDelta), but I'll finally be able to use += (no longer necessary tbh), but they implement iter::Sum !!!

https://github.com/chronotope/chrono/blob/f5ea3ec216d8c34cd0346bc8b105287f9f641d2e/src/time_delta.rs#L392-L406

I won't have to use .fold(...) xd but a more concise .sum() instead :D
e.g. here

rusty-endsong-parser/src/gather.rs

Lines 239 to 246 in 9b2d550

	pub fn listening_time(entries: &[SongEntry]) -> Duration {
	// sadly doesn't work bc neither chrono::Duration nor std::time::Duration implement iter::sum :))))
	// self.iter().map(|entry| entry.time_played).sum::<Duration>()
	entries
	.iter()
	.map(|entry| entry.time_played)
	.fold(Duration::milliseconds(0), |sum, dur| sum + dur)
	}

[fsktom]

https://github.com/chronotope/chrono/releases/tag/v0.4.30

Oh damn seems like they changed the Duration type in v0.4.30 already ! :D

While this is technically a SemVer-breaking change, we expect the risk of downstream users experiencing actual incompatibility to be exceedingly limited (see chronotope/chrono#1095 (comment) of public code using a crater-like experiment), and not enough justification for the large ecosystem churn of a 0.5 release.

[fsktom]

So time v0.1 has been removed
but seems like the Duration features have not been merged yet?
chronotope/chrono#1137 (comment)

[fsktom]

omg

https://github.com/chronotope/chrono/releases/tag/v0.4.31

in v0.4.31 they added UNIX_EPOCH constants

rusty-endsong-parser/src/lib.rs

Lines 94 to 95 in a31db62

	let epoch = chrono::Utc.datetime_from_str("1970-01-01T00:00:00Z", "%FT%TZ")?;
	Ok(Local.from_utc_datetime(&epoch.naive_utc()))

I'm gonna be able to get rid of this line :D

[fsktom]

seems like the Duration features have not been merged yet?

hmm at least the Sum for iterator has been merged..

[fsktom]

Heh, Clippy now has a lint for it, I guess?
It urged me to change a = to a += for a Duration addition in 739a0b3

:D