struct Time::Location::Zone

Overview

A Zone represents a time zone offset in effect in a specific Location.

Some zones have a #name or abbreviation (such as PDT, CEST). For an unnamed zone the formatted offset should be used as name.

Defined in:

time/location.cr

Constant Summary

UTC = new("UTC", 0, false)

This is the UTC time zone with offset +00:00.

It is the only zone offset used in Time::Location::UTC.

Constructors

Instance Method Summary

Instance methods inherited from struct Struct

==(other) : Bool ==, hash(hasher) hash, inspect(io : IO) : Nil inspect, pretty_print(pp) : Nil pretty_print, to_s(io : IO) : Nil to_s

Instance methods inherited from struct Value

==(other : JSON::Any)
==(other : YAML::Any)
==(other) ==, dup dup

Instance methods inherited from class Object

! : Bool !, !=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)
===(other : YAML::Any)
===(other) ===, =~(other) =~, as(type : Class) as, as?(type : Class) as?, class class, dup dup, hash(hasher)
hash hash, in?(*values : Object) : Bool
in?(collection) : Bool in?, inspect : String
inspect(io : IO) : Nil inspect, is_a?(type : Class) : Bool is_a?, itself itself, nil? : Bool nil?, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, responds_to?(name : Symbol) : Bool responds_to?, tap(&) tap, to_json(io : IO)
to_json to_json, to_pretty_json(io : IO, indent : String = " ")
to_pretty_json(indent : String = " ") to_pretty_json, to_s : String
to_s(io : IO) : Nil to_s, to_yaml(io : IO)
to_yaml to_yaml, try(&) try, unsafe_as(type : T.class) forall T unsafe_as

Class methods inherited from class Object

from_json(string_or_io, root : String)
from_json(string_or_io) from_json, from_yaml(string_or_io : String | IO) from_yaml

Constructor Detail

def self.new(name : String?, offset : Int32, dst : Bool) #

Creates a new Zone named name with offset from UTC in seconds. The parameter dst is used to declare this zone as daylight savings time.

If #name is nil, the formatted #offset will be used as #name (see #format).

Raises InvalidTimezoneOffsetError if seconds is outside the supported value range -86_400..86_400 seconds (-24:00 to +24:00).


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Instance Method Detail

def dst? : Bool #

Returns true if this zone offset is daylight savings time.


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def format(io : IO, with_colon = true, with_seconds = :auto) #

Prints #offset to io in the format +HH:mm:ss. When with_colon is false, the format is +HHmmss.

When with_seconds is false, seconds are omitted; when :auto, seconds are omitted if 0.


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def format(with_colon = true, with_seconds = :auto) #

Returns the #offset formatted as +HH:mm:ss. When with_colon is false, the format is +HHmmss.

When with_seconds is false, seconds are omitted; when :auto, seconds are omitted if 0.


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def inspect(io : IO) : Nil #

Prints this Zone to io.

It contains the #name, hour-minute-second format (see #format), #offset in seconds and "DST" if #dst?, otherwise "STD".


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def name : String #

Returns the name of the zone.


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def offset : Int32 #

Returns the offset from UTC in seconds.


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