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ifn't (programming.dev)

submitted 8 months ago by JPDev@programming.dev to c/programmer_humor@programming.dev

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[–] Lmaydev@programming.dev 9 points 8 months ago* (last edited 8 months ago) (2 children)

It has a not keyword it's used for pattern matching.

if (x is not null)

[–] olafurp@lemmy.world 3 points 8 months ago (1 children)

It also has a !=.

[–] Lmaydev@programming.dev 2 points 8 months ago (1 children)

Pattern matching is different.

[–] olafurp@lemmy.world 2 points 8 months ago (1 children)

Yeah, I just said it since you used it with null. I used it a lot for enums

[–] Lmaydev@programming.dev 1 points 8 months ago* (last edited 8 months ago)

The type matching is the most common thing I use it with. Combined with inline variables.

if (x is string { Length: 5} s)
{
    // do stuff with s
}

And switch expressions.

As a side note inline variables are amazing haha

[–] Patches@sh.itjust.works 2 points 8 months ago

Stuff can be two things