Except the fact that Swift enums are value type, allows you to access both the enum and it’s rawValue simultaneously and so much more ☺️✌️( and don’t need importing)
int enums are good as bit wise flags, but after watching this video, I am going to extend normal integer (Z) operations to raise a not implemented error.
Neat syntactic sugar, but it makes code comprehension harder. Enums aren't supposed to be integers or strings; they occupy a separate namespace. Seeing print(role) in a piece of code imposes a higher cognitive load on the reader than print(role.value). Remember: you read code much m,ore often than you write it.
If the StrEnum is handled as string when serialising to json, I can see the benefit. "Role.ADMIN" or worse "" is annoying to parse for the receiver. And print(role) just looks like someone forgot to cleanup after debugging
@@DelzDerMeister Serde between JSON and enums is language and implementation-specific. In C++ you'd probably overload >. In Rust you'd implement the Serialize and Deserialize traits. In Go you'd write custom Marshallers and Unmarshallers. It's a recognised issue with a ton of discussion on the web.
The problem is that _enums are not integers or strings_ . It's a mistake to think of enum members as "being" 1, 2, 3 or 'foo', 'bar', 'baz' etc.. They should be opaque and only compared with each other. An enum is supposed to encapsulate a set of related constants and be a first class object in its own right. You should never need to know the underlying value of an enum. If you're mapping HTTP status codes to something, for example, use a dictionary to map the code to an enum value and use that value subsequently.
now I understand how does Django recognize the model field names and use it for query's and such... if you apply auto over the model attrs, BUT i still don't know how does recognize the model class name.
@deltamico a lot of it is helped by Rust being a statically typed language, but the match statement assigning values like `let x = match enum_value {...}`. On top of that the match statement can check that you've exhausted all options, so with enums where only a limited set of states are possible, the Rust compiler is clever enough to realise you've left out a possibility and stop compilation from progressing. You can also store distinct objects within different enum values, which is really handy, which means you don't need string enums and int enums, you can just assign branch one a string and branch two an integer if you so wish. It's hard to demo this in a TH-cam comment but if you're interested I'd recommend looking up NoBoilerplate's video on enums in Rust.
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StrEnum and IntEnum implies DexEnum, ConEnum, WisEnum, and ChaEnum
Underrated comment!
it also implies that we can take a +2 improvement in one of these enums when we get to python 3.12, 3.16, and 3.19!
IntEnum and StringEnum are just cursed, just use .value if you want to play around with the value.
Excited For Swift!
Except the fact that Swift enums are value type, allows you to access both the enum and it’s rawValue simultaneously and so much more ☺️✌️( and don’t need importing)
int enums are good as bit wise flags, but after watching this video, I am going to extend normal integer (Z) operations to raise a not implemented error.
super cool!!! i like the INT ENUMS A LOT
If I need functional of str or int in enum, I make it multiple inheritance like class StrEnumn(str, Enum) or IntEnum(int, Enum)
I use StrEnum in my scripts interacting with SAP/R3 to get the component IDs and make the code cleaner
Thank you 😊
I created a object to represent Windows file permissions and found the IntFlag enum very useful.
Great video. Thanks
Neat syntactic sugar, but it makes code comprehension harder. Enums aren't supposed to be integers or strings; they occupy a separate namespace. Seeing print(role) in a piece of code imposes a higher cognitive load on the reader than print(role.value). Remember: you read code much m,ore often than you write it.
If the StrEnum is handled as string when serialising to json, I can see the benefit.
"Role.ADMIN" or worse "" is annoying to parse for the receiver.
And print(role) just looks like someone forgot to cleanup after debugging
@@DelzDerMeister Serde between JSON and enums is language and implementation-specific. In C++ you'd probably overload >. In Rust you'd implement the Serialize and Deserialize traits. In Go you'd write custom Marshallers and Unmarshallers. It's a recognised issue with a ton of discussion on the web.
I think the only thing I like here is the auto function.
The problem is that _enums are not integers or strings_ . It's a mistake to think of enum members as "being" 1, 2, 3 or 'foo', 'bar', 'baz' etc.. They should be opaque and only compared with each other. An enum is supposed to encapsulate a set of related constants and be a first class object in its own right. You should never need to know the underlying value of an enum. If you're mapping HTTP status codes to something, for example, use a dictionary to map the code to an enum value and use that value subsequently.
@@davidgillies620 I didn't say enums are integer or string.
But ok I guess.
StrEnum would be useful when you want to use the enum value as an SQL column value
Awesome
now I understand how does Django recognize the model field names and use it for query's and such... if you apply auto over the model attrs, BUT i still don't know how does recognize the model class name.
StrEnum is cursed, from a C/C++ & Asm & Machine code developer.
Awesome Sause
So you just saved 4 keystrokes when asking for a value
'Cross-eyed' , ' tongue out ', I wonder why you mentioned that specifically 🤔
Basically an IntEnum is a C enum.
Auto everything
Python: nice enums
Rust: hold my beer.
These seem contradictory to the concept of enums.
Once you bother implementing StrEnum, it might as well be InstanceEnum. What a short-sighted waste of implementation details
After using enums and the match statement in Rust, those features are so disappointing in other languages
what additional capabilities do they have?
@deltamico a lot of it is helped by Rust being a statically typed language, but the match statement assigning values like `let x = match enum_value {...}`. On top of that the match statement can check that you've exhausted all options, so with enums where only a limited set of states are possible, the Rust compiler is clever enough to realise you've left out a possibility and stop compilation from progressing.
You can also store distinct objects within different enum values, which is really handy, which means you don't need string enums and int enums, you can just assign branch one a string and branch two an integer if you so wish.
It's hard to demo this in a TH-cam comment but if you're interested I'd recommend looking up NoBoilerplate's video on enums in Rust.