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Class `std.datetime.timezone.LocalTime`

A TimeZone which represents the current local time zone on the system running your program.


						
				class LocalTime
				
  : TimeZone
				;

This uses the underlying C calls to adjust the time rather than using specific D code based off of system settings to calculate the time such as PosixTimeZone and WindowsTimeZone do. That also means that it will use whatever the current time zone is on the system, even if the system's time zone changes while the program is running.

Properties

Name	Type	Description
`dstName`[get]	`string`	Typically, the abbreviation (generally 3 or 4 letters) for the time zone when DST is in effect (e.g. PDT). It is not necessarily unique.
`hasDST`[get]	`bool`	Whether this time zone has Daylight Savings Time at any point in time. Note that for some time zone types it may not have DST for current dates but will still return true for `hasDST` because the time zone did at some point have DST.
`name`[get]	`string`	In principle, this is the name of the local time zone. However, this always returns the empty string. This is because time zones cannot be uniquely identified by the attributes given by the OS (such as the `stdName` and `dstName`), and neither Posix systems nor Windows systems provide an easy way to get the TZ Database name of the local time zone.
`stdName`[get]	`string`	Typically, the abbreviation (generally 3 or 4 letters) for the time zone when DST is not in effect (e.g. PST). It is not necessarily unique.
`dstName`[get]	`string`	Typically, the abbreviation (generally 3 or 4 letters) for the time zone when DST is in effect (e.g. PDT). It is not necessarily unique.
`hasDST`[get]	`bool`	Whether this time zone has Daylight Savings Time at any point in time. Note that for some time zone types it may not have DST for current dates but will still return true for `hasDST` because the time zone did at some point have DST.
`stdName`[get]	`string`	Typically, the abbreviation (generally 3 or 4 letters) for the time zone when DST is not in effect (e.g. PST). It is not necessarily unique.

Methods

Name	Description
`dstInEffect`	Takes the number of hnsecs (100 ns) since midnight, January 1st, 1 A.D. in UTC time (i.e. std time) and returns whether DST is in effect in this time zone at the given point in time.
`opCall`	`LocalTime` is a singleton class. `LocalTime` returns its only instance.
`tzToUTC`	Returns std time using the standard C function calls on Posix systems and the standard Windows system calls on Windows systems to adjust the time to UTC from the appropriate time zone.
`utcToTZ`	Returns hnsecs in the local time zone using the standard C function calls on Posix systems and the standard Windows system calls on Windows systems to adjust the time to the appropriate time zone from std time.
`dstInEffect`	Takes the number of hnsecs (100 ns) since midnight, January 1st, 1 A.D. in UTC time (i.e. std time) and returns whether DST is effect in this time zone at the given point in time.
`factory`	Create instance of class specified by the fully qualified name classname. The class must either have no constructors or have a default constructor.
`opCmp`	Compare with another Object obj.
`opEquals`	Test whether `this` is equal to `o`. The default implementation only compares by identity (using the `is` operator). Generally, overrides for `opEquals` should attempt to compare objects by their contents.
`toHash`	Compute hash function for Object.
`toString`	Convert Object to a human readable string.
`tzToUTC`	Takes the number of hnsecs (100 ns) since midnight, January 1st, 1 A.D. in this time zone's time and converts it to UTC (i.e. std time).
`utcOffsetAt`	Returns what the offset from UTC is at the given std time. It includes the DST offset in effect at that time (if any).
`utcToTZ`	Takes the number of hnsecs (100 ns) since midnight, January 1st, 1 A.D. in UTC time (i.e. std time) and converts it to this time zone's time.

Authors

Jonathan M Davis

License

Boost License 1.0.