AI-generated Key Takeaways
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Periodrepresents the operational hours of a place, containing open and optional close events. -
If a place is open 24 hours, the
closeevent will be nil, and theopenevent will have a time of "0000". -
Periodconforms toCustomStringConvertible,Equatable, andHashableprotocols for description, comparison, and hashing functionalities. -
The
descriptionproperty provides a textual representation of thePeriodinstance. -
hash(into:)and the deprecatedhashValueare used for hashing in accordance with theHashableprotocol.
Period
struct Periodextension Period : Copyable, CustomStringConvertible, Equatable, Escapable, Hashable, SendableA type representing a period of time where the place is operating for a Place.
Contains an open Event and an optional close Event. The close event will be nil if the
period is open 24hrs.
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Returns a Boolean value indicating whether two values are equal.
Equality is the inverse of inequality. For any values
aandb,a == bimplies thata != bisfalse.Declaration
Swift
static func == (lhs: Period, rhs: Period) -> BoolParameters
lhsA value to compare.
rhsAnother value to compare.
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The close event of this period. Can be nil if period is open 24hrs.
Declaration
Swift
let close: Event? -
A textual representation of this instance.
Calling this property directly is discouraged. Instead, convert an instance of any type to a string by using the
String(describing:)initializer. This initializer works with any type, and uses the customdescriptionproperty for types that conform toCustomStringConvertible:struct Point: CustomStringConvertible { let x: Int, y: Int var description: String { return "(\(x), \(y))" } } let p = Point(x: 21, y: 30) let s = String(describing: p) print(s) // Prints "(21, 30)"The conversion of
pto a string in the assignment tosuses thePointtype’sdescriptionproperty.Declaration
Swift
var description: String { get } -
Hashes the essential components of this value by feeding them into the given hasher.
Implement this method to conform to the
Hashableprotocol. The components used for hashing must be the same as the components compared in your type’s==operator implementation. Callhasher.combine(_:)with each of these components.Important
In your implementation of
hash(into:), don’t callfinalize()on thehasherinstance provided, or replace it with a different instance. Doing so may become a compile-time error in the future.Declaration
Swift
func hash(into hasher: inout Hasher) -
The hash value.
Hash values are not guaranteed to be equal across different executions of your program. Do not save hash values to use during a future execution.
Important
hashValueis deprecated as aHashablerequirement. To conform toHashable, implement thehash(into:)requirement instead. The compiler provides an implementation forhashValuefor you.Declaration
Swift
var hashValue: Int { get } -
The open event of this period.
Each
Periodis guaranteed to have an open event. If the period is representing open 24hrs, it will only have the open Event with time as “0000”.Declaration
Swift
let open: Event