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Union, intersection, difference, and more are coming to JavaScript Sets (www.sonarsource.com)

submitted 6 months ago by [email protected] to c/[email protected]

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[–] [email protected] 27 points 6 months ago (2 children)

They didn’t have that?!

[–] [email protected] 13 points 6 months ago

The more you learn about JavaScript, the less you understand how the modern web actually functions.

[–] [email protected] 3 points 6 months ago

Set functionality was there leveraging object properties this just makes things more concise

[–] [email protected] 18 points 6 months ago

Union organizing and intersectionality can only improve things.

[–] [email protected] 2 points 6 months ago

This seems like a nice feature. Python has sets like this too, and it's super useful.

[+] [email protected] -14 points 6 months ago (1 children)

Ah yes, javascript, the database language.

Jesus fucking christ I am so glad I don't work in the corporate tech sector anymore.

[–] [email protected] 14 points 6 months ago (1 children)

Sets aren't just for databases

[+] [email protected] -13 points 6 months ago* (last edited 6 months ago) (3 children)

If you need to be able to do unions and you are doing it in javascript, you are being absurdly inefficient compared to setting up a postgres db, but i wont be able to convince you of this because of basically nonsense brainwashing from your corporate conditioning.

EDIT: Note to self, do not use lemmy while hangry.

Yep Im wayyyy off base here.

[–] [email protected] 9 points 6 months ago

Why would you need to set up a postgres db...? Unions are a fundamental set theoretic operation that are applicable to all set-like collections. You may as well say "an in memory hash map / list is absurdly inefficient compared to a relational db." Is it efficient, to you, to spin up a postgres instance to hold a dozen key value pairs?

[–] [email protected] 6 points 6 months ago

[–] [email protected] 5 points 6 months ago

Sets are super useful for all sorts of stuff where you want the datatype to guarantee there is only one instance of a value in the collection. UI components where you are incrementally adding things to a selection is a great example.

It's a completely standard feature in many stdlibs and has nothing to with turning JS into a database.