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10311 :: I can't understand the func parseTime

• zhouhaiming (orginal) [2023-06-29T10:04:42+02:00] view original

  uname -a

  Linux myfed 5.6.6-300.fc32.x86_64 #1 SMP Tue Apr 21 13:44:19 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux # date -R Thu, 29 Jun 2023 00:56:04 -0700

  cat test3.nim

  import times

  proc laTzInfo(time: Time): ZonedTime =

  ZonedTime(utcOffset: 25200, isDst: false, time: time)

  let laZone = newTimezone("America/Los_Angeles", laTzInfo, laTzInfo)

  proc bjTzInfo(time: Time): ZonedTime =

  ZonedTime(utcOffset: -28800, isDst: false, time: time)

  let bjZone = newTimezone("Asia/Shanghai", bjTzInfo, bjTzInfo)

  echo parseTime("2023-06-29 15:27:12", "yyyy-MM-dd HH:mm:ss", bjZone) # 2023-06-29T08:27:12-07:00 echo parseTime("2023-06-29 15:27:12 +08:00", "yyyy-MM-dd HH:mm:ss zzz", bjZone) # 2023-06-29T00:27:12-07:00 echo parseTime("2023-06-29 15:27:12 +08:00", "yyyy-MM-dd HH:mm:ss zzz", laZone) # 2023-06-29T00:27:12-07:00 echo parseTime("2023-06-29 15:27:12 +08:00", "yyyy-MM-dd HH:mm:ss zzz", utc()) # 2023-06-29T00:27:12-07:00

  The First: parseTime("2023-06-29 15:27:12", "yyyy-MM-dd HH:mm:ss", bjZone) nim think the default is UTC? but the definition bjZone will be meaningless.

  The last three: parseTime("2023-06-29 15:27:12 +08:00", "yyyy-MM-dd HH:mm:ss zzz", bjZone) parseTime("2023-06-29 15:27:12 +08:00", "yyyy-MM-dd HH:mm:ss zzz", laZone) parseTime("2023-06-29 15:27:12 +08:00", "yyyy-MM-dd HH:mm:ss zzz", utc()) result is the same: 2023-06-29T00:27:12-07:00 , the different definition: bjZone laZone utc(), does it make sense?

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• xigoi (orginal) [2023-06-29T14:44:54+02:00] view original

  For the last three, I think the timestamp's timezone overriding the timezone in the code is definitely the correct behavior.

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