英文:
How do I parse UTC and format to local time with Clojure's clojure.java-time library?
问题
This returns "01:00" even though (jt/zone-offset) returns "-05:00".
英文:
I'm sure I'm missing something simple. The goal is to parse a string such as "20230227T010000Z" and then to print out the time in the local time zone.
(as-> "20230227T010000Z" X
(jt/offset-date-time "yyyyMMdd'T'HHmmssX" X) ;#object[java.time.OffsetDateTime "0xf79e8a9" "2023-02-27T01:00Z"]
(jt/with-offset X (jt/zone-offset)) ;#object[java.time.OffsetDateTime "0x41ec977e" "2023-02-27T01:00-05:00"]
(jt/format "hh:mm" X)) ;"01:00"
This returns "01:00" even though (jt/zone-offset) returns "-05:00".
答案1
得分: 1
确保你正在使用正确的函数：
> 将偏移设置为指定值，以确保本地时间保持不变。
(as-> "20230227T010000Z" X
(jt/offset-date-time "yyyyMMdd'T'HHmmssX" X)
(jt/with-offset X -5)
(jt/format "hh:mm" X))
=> "01:00"
with-offset-same-instant
> 将偏移设置为指定值，以确保结果具有相同的瞬时时间。
(as-> "20230227T010000Z" X
(jt/offset-date-time "yyyyMMdd'T'HHmmssX" X)
(jt/with-offset-same-instant X -5)
(jt/format "hh:mm" X))
=> "08:00"
英文:
Make sure you're using the correct function:
> Sets the offset to the specified value ensuring that the local time stays the same.
(as-> "20230227T010000Z" X
(jt/offset-date-time "yyyyMMdd'T'HHmmssX" X)
(jt/with-offset X -5)
(jt/format "hh:mm" X))
=> "01:00"
with-offset-same-instant
> Sets the offset to the specified value ensuring that the result has the same instant.
(as-> "20230227T010000Z" X
(jt/offset-date-time "yyyyMMdd'T'HHmmssX" X)
(jt/with-offset-same-instant X -5)
(jt/format "hh:mm" X))
=> "08:00"
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