chrono/CHANGELOG.md

ChangeLog for Chrono

This documents all notable changes to Chrono.

Chrono obeys the principle of Semantic Versioning.

There were/are numerous minor versions before 1.0 due to the language changes. Versions with only mechnical changes will be omitted from the following list.

0.2.16 (2015-09-06)

Added

• Added %.3f, %.6f and %.9f specifier for formatting fractional seconds up to 3, 6 or 9 decimal digits. This is a natural extension to the existing %f. Note that this is (not yet) generic, no other value of precision is supported. (#45)

Changed

• Forbade unsized types from implementing Datelike and Timelike. This does not make a big harm as any type implementing them should be already sized to be practical, but this change still can break highly generic codes. (#46)

Fixed

• Fixed a broken link in the README.md. (#41)

0.2.15 (2015-07-05)

Added

• Padding modifiers %_?, %-? and %0? are implemented. They are glibc extensions which seem to be reasonably widespread (e.g. Ruby).

• Added %:z specifier and corresponding formatting items which is essentially same to %z but with a colon.

• Added a new specifier %.f which precision adapts from the input. This was added as a response to the UX problems in the original nanosecond specifier %f.

Fixed

• Numeric::Timestamp specifier (%s) was ignoring the time zone offset when provided.

• Improved the documentation and associated tests for strftime.

0.2.14 (2015-05-15)

Fixed

• NaiveDateTime +/- Duration or NaiveTime +/- Duration could have gone wrong when the Duration to be added is negative and has a fractional second part. This was caused by an underflow in the conversion from Duration to the parts; the lack of tests for this case allowed a bug. (#37)

0.2.13 (2015-04-29)

Added

• The optional dependency on rustc_serialize and relevant Rustc{En,De}codable implementations for supported types has been added. This is enabled by the rustc-serialize Cargo feature. (#34)

Changed

• chrono::Duration reexport is changed to that of crates.io time crate. This enables Rust 1.0 beta compatibility.

0.2.4 (2015-03-03)

Fixed

• Clarified the meaning of Date<Tz> and fixed unwanted conversion problem that only occurs with positive UTC offsets. (#27)

0.2.3 (2015-02-27)

Added

• DateTime<Tz> and Date<Tz> is now Copy/Send when Tz::Offset is Copy/Send. The implementations for them were mistakenly omitted. (#25)

Fixed

• Local::from_utc_datetime didn't set a correct offset. (#26)

0.2.1 (2015-02-21)

Changed

• DelayedFormat no longer conveys a redundant lifetime.

0.2.0 (2015-02-19)

Added

• Offset is splitted into TimeZone (constructor) and Offset (storage) types. You would normally see only the former, as the latter is mostly an implementation detail. Most importantly, Local now can be used to directly construct timezone-aware values.

  Some types (currently, UTC and FixedOffset) are both TimeZone and Offset, but others aren't (e.g. Local is not what is being stored to each DateTime values).

• LocalResult::map convenience method has been added.

• TimeZone now allows a construction of DateTime values from UNIX timestamp, via timestamp and timestamp_opt methods.

• TimeZone now also has a method for parsing DateTime, namely datetime_from_str.

• The following methods have been added to all date and time types:

  • checked_add
  • checked_sub
  • format_with_items

• The following methods have been added to all timezone-aware types:

  • timezone
  • with_timezone
  • naive_utc
  • naive_local

• parse_from_str method has been added to all naive types and DateTime<FixedOffset>.

• All naive types and instances of DateTime with time zones UTC, Local and FixedOffset implement the FromStr trait. They parse what std::fmt::Debug would print.

• chrono::format has been greatly rewritten.

  • The formatting syntax parser is modular now, available at chrono::format::strftime.

  • The parser and resolution algorithm is also modular, the former is available at chrono::format::parse while the latter is available at chrono::format::parsed.

  • Explicit support for RFC 2822 and 3339 syntaxes is landed.

  • There is a minor formatting difference with atypical values, e.g. for years not between 1 BCE and 9999 CE.

Changed

• Most uses of Offset are converted to TimeZone. In fact, all user-facing code is expected to be Offset-free.

• [Naive]DateTime::*num_seconds_from_unix_epoch* methods have been renamed to simply timestamp or from_timestamp*. The original names have been deprecated.

Removed

• Time has been removed. This also prompts a related set of methods in TimeZone.

  This is in principle possible, but in practice has seen a little use because it can only be meaningfully constructed via an existing DateTime value. This made many operations to Time unintuitive or ambiguous, so we simply let it go.

  In the case that Time is really required, one can use a simpler NaiveTime. NaiveTime and NaiveDate can be freely combined and splitted, and TimeZone::from_{local,utc}_datetime can be used to convert from/to the local time.

• with_offset method has been removed. Use with_timezone method instead. (This is not deprecated since it is an integral part of offset reform.)

0.1.14 (2015-01-10)

Added

• Added a missing std::fmt::String impl for Local.

0.1.13 (2015-01-10)

Changed

• Most types now implement both std::fmt::Show and std::fmt::String, with the former used for the stricter output and the latter used for more casual output.

Removed

• Offset::name has been replaced by a std::fmt::String implementation to Offset.

0.1.12 (2015-01-08)

Removed

• Duration + T no longer works due to the updated impl reachability rules. Use T + Duration as a workaround.

0.1.4 (2014-12-13)

Fixed

• Fixed a bug that Date::and_* methods with an offset that can change the date are off by one day.

0.1.3 (2014-11-28)

Added

• {Date,Time,DateTime}::with_offset methods have been added.

• LocalResult now implements a common set of traits.

• LocalResult::and_* methods have been added. They are useful for safely chaining LocalResult<Date<Off>> methods to make LocalResult<DateTime<Off>>.

Changed

• Offset::name now returns SendStr.

• {Date,Time} - Duration overloadings are now allowed.

0.1.2 (2014-11-24)

Added

• Duration + Date overloading is now allowed.

Changed

• Chrono no longer needs num dependency.

0.1.0 (2014-11-20)

The initial version that was available to crates.io.