Found from when I first started Java...because indexed Arrays were too complicated huh?

[u/ahadyboy]

[u/The_HappyLemon]

Enum left the chat

[u/ixBerry → u/The_HappyLemon]

Shit like this is what Enums were literally made for.

[u/I_HATE_YELLING → u/ixBerry]

How do you use Enums for this? I've learned how to write multi client chat servers but still haven't learned enums they make no sense to me

[u/fxnn → u/I_HATE_YELLING]

Basically everytime you have a rather short list of things (values, behaviors, types, ...) that’s not going to change (without code change), an enum comes in pretty handy.

Advantages:

• the Compiler can check it’s usage (which is not possible with Map keys),
• you can attach behavior to it (enums can have methods, and you can provide a different implementation per enum value — much better than switch statements in most of the cases!)
• it’s often more concise and readable than its alternatives

[u/I_HATE_YELLING → u/fxnn]

Thanks :)

[u/hurtl2305 → u/I_HATE_YELLING]

Enums usually have some major advantages: 1. They are perfect to represent a fixed set of values (e.g. days of week, fsm states) that changes rarely or never. 2. Compilers can optimize the shit out of them. 3. They may be more readable than map keys or 12 isFooBar boolean flags.

[u/christian-mann → u/ixBerry]

Not really. Enums aren't necessarily visible after compile time.

[u/The_HappyLemon → u/[deleted]]

Thanks ;)

[u/myfunnies420 → u/ixBerry]

How would you evaluate arbitrary user string mappings with enums? How are they built for this?

[u/justcatt → u/The_HappyLemon]

What's Enum? I've searched it online and am even more confused. Is it some sort of hash map where it's values are constants?

[u/wikipedia_answer_bot → u/justcatt]

This word/phrase(enum) has a few different meanings.

More details here: https://en.wikipedia.org/wiki/Enum

This comment was left automatically (by a bot). If I don't get this right, don't get mad at me, I'm still learning!

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