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doc: note about local timezone and datetime

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ToruNiina
2019-12-06 21:15:31 +09:00
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@@ -699,6 +699,7 @@ date information, but it can be converted to `std::chrono::duration` that
represents a duration from the beginning of the day, `00:00:00.000`. represents a duration from the beginning of the day, `00:00:00.000`.
```toml ```toml
# sample.toml
date = 2018-12-23 date = 2018-12-23
time = 12:30:00 time = 12:30:00
l_dt = 2018-12-23T12:30:00 l_dt = 2018-12-23T12:30:00
@@ -715,8 +716,12 @@ const auto o_dt = toml::get<std::chrono::system_clock::time_point>(data.at("o_dt
const auto time = toml::get<std::chrono::minutes>(data.at("time")); // 12 * 60 + 30 min const auto time = toml::get<std::chrono::minutes>(data.at("time")); // 12 * 60 + 30 min
``` ```
toml11 defines its own datetime classes. `local_date` and `local_datetime` are assumed to be in the local timezone when
You can see the definitions in [toml/datetime.hpp](toml/datetime.hpp). they are converted into `time_point`. On the other hand, `offset_datetime` only
uses the offset part of the data and it does not take local timezone into account.
To contain datetime data, toml11 defines its own datetime types.
For more detail, you can see the definitions in [toml/datetime.hpp](toml/datetime.hpp).
## Getting with a fallback ## Getting with a fallback
@@ -1447,8 +1452,6 @@ This feature is introduced to make it easy to write a custom serializer.
Because `std::chrono::system_clock::time_point` is a __time point__, Because `std::chrono::system_clock::time_point` is a __time point__,
not capable of representing a Local Time independent from a specific day. not capable of representing a Local Time independent from a specific day.
It is recommended to get `datetime`s as `std::chrono` classes through `toml::get`.
## Unreleased TOML features ## Unreleased TOML features
There are some unreleased features in toml-lang/toml:master. There are some unreleased features in toml-lang/toml:master.