25 Time library [time]

25.10 Time zones [time.zone]

25.10.7 Class template zoned_­time [time.zone.zonedtime]

25.10.7.2 Constructors [time.zone.zonedtime.ctor]

🔗
zoned_time();
1
#
Remarks: This constructor does not participate in overload resolution unless traits​::​default_­zone() is a well-formed expression.
2
#
Effects: Constructs a zoned_­time by initializing zone_­ with traits​::​default_­zone() and default constructing tp_­.
🔗
zoned_time(const sys_time<Duration>& st);
3
#
Remarks: This constructor does not participate in overload resolution unless traits​::​default_­zone() is a well-formed expression.
4
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Effects: Constructs a zoned_­time by initializing zone_­ with traits​::​default_­zone() and tp_­ with st.
🔗
explicit zoned_time(TimeZonePtr z);
5
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Requires: z refers to a time zone.
6
#
Effects: Constructs a zoned_­time by initializing zone_­ with std​::​move(z).
🔗
explicit zoned_time(string_view name);
7
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Remarks: This constructor does not participate in overload resolution unless traits​::​locate_­zone(string_­view{}) is a well-formed expression and zoned_­time is constructible from the return type of traits​::​locate_­zone(string_­view{}).
8
#
Effects: Constructs a zoned_­time by initializing zone_­ with traits​::​locate_­zone(name) and default constructing tp_­.
🔗
template<class Duration2> zoned_time(const zoned_time<Duration2, TimeZonePtr>& y) noexcept;
9
#
Remarks: Does not participate in overload resolution unless sys_­time<Duration2> is implicitly convertible to sys_­time<Duration>.
10
#
Effects: Constructs a zoned_­time by initializing zone_­ with y.zone_­ and tp_­ with y.tp_­.
🔗
zoned_time(TimeZonePtr z, const sys_time<Duration>& st);
11
#
Requires: z refers to a time zone.
12
#
Effects: Constructs a zoned_­time by initializing zone_­ with std​::​move(z) and tp_­ with st.
🔗
zoned_time(string_view name, const sys_time<Duration>& st);
13
#
Remarks: This constructor does not participate in overload resolution unless zoned_­time is constructible from the return type of traits​::​locate_­zone(name) and st.
14
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Effects: Equivalent to construction with {traits​::​locate_­zone(name), st}.
🔗
zoned_time(TimeZonePtr z, const local_time<Duration>& tp);
15
#
Requires: z refers to a time zone.
16
#
Remarks: This constructor does not participate in overload resolution unless 
decltype(declval<TimeZonePtr&>()->to_sys(local_time<Duration>{}))
is convertible to sys_­time<duration>.
17
#
Effects: Constructs a zoned_­time by initializing zone_­ with std​::​move(z) and tp_­ with zone_­->to_­sys(tp).
🔗
zoned_time(string_view name, const local_time<Duration>& tp);
18
#
Remarks: This constructor does not participate in overload resolution unless zoned_­time is constructible from the return type of traits​::​locate_­zone(name) and tp.
19
#
Effects: Equivalent to construction with {traits​::​locate_­zone(name), tp}.
🔗
zoned_time(TimeZonePtr z, const local_time<Duration>& tp, choose c);
20
#
Requires: z refers to a time zone.
21
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Remarks: This constructor does not participate in overload resolution unless 
decltype(declval<TimeZonePtr&>()->to_sys(local_time<Duration>{}, choose::earliest))
is convertible to sys_­time<duration>.
22
#
Effects: Constructs a zoned_­time by initializing zone_­ with std​::​move(z) and tp_­ with zone_­->to_­sys(tp, c).
🔗
zoned_time(string_view name, const local_time<Duration>& tp, choose c);
23
#
Remarks: This constructor does not participate in overload resolution unless zoned_­time is constructible from the return type of traits​::​locate_­zone(name), local_­time<Duration>, and choose.
24
#
Effects: Equivalent to construction with {traits​::​locate_­zone(name), tp, c}.
🔗
template<class Duration2, class TimeZonePtr2> zoned_time(TimeZonePtr z, const zoned_time<Duration2, TimeZonePtr2>& y);
25
#
Remarks: Does not participate in overload resolution unless sys_­time<Duration2> is implicitly convertible to sys_­time<Duration>.
26
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Requires: z refers to a valid time zone.
27
#
Effects: Constructs a zoned_­time by initializing zone_­ with std​::​move(z) and tp_­ with y.tp_­.
🔗
template<class Duration2, class TimeZonePtr2> zoned_time(TimeZonePtr z, const zoned_time<Duration2, TimeZonePtr2>& y, choose);
28
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Remarks: Does not participate in overload resolution unless sys_­time<Duration2> is implicitly convertible to sys_­time<Duration>.
29
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Requires: z refers to a valid time zone.
30
#
Effects: Equivalent to construction with {z, y}.
31
#
[ Note
:
The choose parameter has no effect.
— end note
 ]
🔗
zoned_time(string_view name, const zoned_time<Duration>& y);
32
#
Remarks: This constructor does not participate in overload resolution unless zoned_­time is constructible from the return type of traits​::​locate_­zone(name) and zoned_­time.
33
#
Effects: Equivalent to construction with {traits​::​locate_­zone(name), y}.
🔗
zoned_time(string_view name, const zoned_time<Duration>& y, choose c);
34
#
Remarks: This constructor does not participate in overload resolution unless zoned_­time is constructible from the return type of traits​::​locate_­zone(name), zoned_­time, and choose.
35
#
Effects: Equivalent to construction with {traits​::​locate_­zone(name), y, c}.
36
#
[ Note
:
The choose parameter has no effect.
— end note
 ]