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The Hashable now want to use protocol instead of hashValue but I can't figure it out
NSObject is Hashable but a protocol that adopts NSObject is not?CFString doesn't conform to protocol Hashable?Why can't I call hash() on an apparently hashable method of an unhashable instance?How to handle hash collisions for Dictionaries in SwiftCreating a protocol that represents hashable objects that can be on or offperformance considerations of hashValue in swift protocol HashableHashable protocol for a protocolConforming to Hashable protocol?How to conform custom class with optional properties to “hashable” protocolWhat is the use of hashable protocol in swift4?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I use to have the following code that worked in Swift 4.2 but is now deprecated in Swift 5:
struct xxx: Hashable {
var hashValue: Int return uniqueIdentifier
When I try to use the new hash(into hasher: inout Hasher) I'm not sure what to do. My uniqueIdentifier starts at 0 and keeps incrementing so it's always unique, no need for anything fancy. But it seams to me that I'm now required to have the following code:
func hash(into hasher: inout Hasher)
hasher.combine(uniqueIdentifier)
Is this true? I don't see why I need to combined my uniqueIdentifier with some seed. Is there a way I can overcome this or I'm I stuck using hasher.combine(uniqueIdentifier)?
swift4.2 hashable swift5
asked Mar 28 at 2:16
mretondomretondo
1087 bronze badges
add a comment |
I use to have the following code that worked in Swift 4.2 but is now deprecated in Swift 5:
struct xxx: Hashable {
var hashValue: Int return uniqueIdentifier
When I try to use the new hash(into hasher: inout Hasher) I'm not sure what to do. My uniqueIdentifier starts at 0 and keeps incrementing so it's always unique, no need for anything fancy. But it seams to me that I'm now required to have the following code:
func hash(into hasher: inout Hasher)
hasher.combine(uniqueIdentifier)
Is this true? I don't see why I need to combined my uniqueIdentifier with some seed. Is there a way I can overcome this or I'm I stuck using hasher.combine(uniqueIdentifier)?
swift4.2 hashable swift5
asked Mar 28 at 2:16
mretondomretondo
1087 bronze badges
add a comment |
I use to have the following code that worked in Swift 4.2 but is now deprecated in Swift 5:
struct xxx: Hashable {
var hashValue: Int return uniqueIdentifier
When I try to use the new hash(into hasher: inout Hasher) I'm not sure what to do. My uniqueIdentifier starts at 0 and keeps incrementing so it's always unique, no need for anything fancy. But it seams to me that I'm now required to have the following code:
func hash(into hasher: inout Hasher)
hasher.combine(uniqueIdentifier)
Is this true? I don't see why I need to combined my uniqueIdentifier with some seed. Is there a way I can overcome this or I'm I stuck using hasher.combine(uniqueIdentifier)?
swift4.2 hashable swift5
asked Mar 28 at 2:16
mretondomretondo
1087 bronze badges
I use to have the following code that worked in Swift 4.2 but is now deprecated in Swift 5:
struct xxx: Hashable {
var hashValue: Int return uniqueIdentifier
When I try to use the new hash(into hasher: inout Hasher) I'm not sure what to do. My uniqueIdentifier starts at 0 and keeps incrementing so it's always unique, no need for anything fancy. But it seams to me that I'm now required to have the following code:
func hash(into hasher: inout Hasher)
hasher.combine(uniqueIdentifier)
Is this true? I don't see why I need to combined my uniqueIdentifier with some seed. Is there a way I can overcome this or I'm I stuck using hasher.combine(uniqueIdentifier)?
swift4.2 hashable swift5
swift4.2 hashable swift5
asked Mar 28 at 2:16
mretondomretondo
1087 bronze badges
asked Mar 28 at 2:16
mretondomretondo
1087 bronze badges
asked Mar 28 at 2:16
mretondomretondo
1087 bronze badges
asked Mar 28 at 2:16
mretondomretondo
1087 bronze badges
asked Mar 28 at 2:16
mretondomretondo
1087 bronze badges
1087 bronze badges
add a comment |
add a comment |
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