datetime!() { /* proc-macro */ }
Expand description
Construct a PrimitiveDateTime
or OffsetDateTime
with a statically known value.
The resulting expression can be used in const
or static
declarations.
The syntax accepted by this macro is the same as date!
and time!
, with an optional
offset!
, all space-separated. If an offset!
is provided, the resulting value will
be an OffsetDateTime
; otherwise it will be a PrimitiveDateTime
.
assert_eq!(
datetime!(2020-01-01 0:00),
Date::from_calendar_date(2020, Month::January, 1)?.midnight()
);
assert_eq!(
datetime!(2020-01-01 0:00 UTC),
Date::from_calendar_date(2020, Month::January, 1)?.midnight().assume_utc()
);
assert_eq!(
datetime!(2020-01-01 0:00 -1),
Date::from_calendar_date(2020, Month::January, 1)?.midnight()
.assume_offset(UtcOffset::from_hms(-1, 0, 0)?)
);