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What are variables and semicolons for actually? (programming.dev)

submitted 7 months ago by TadoTheRustacean@programming.dev to c/programmer_humor@programming.dev

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[-] TheAgeOfSuperboredom@lemmy.ca 12 points 7 months ago

Yeah, semicolons are ugly anyway and they'd ruin the beautiful expression of your code.

[-] dohpaz42@lemmy.world 7 points 7 months ago

On a more serious note, does rust suffer some of the same issues as JavaScript when it comes to omitting semicolons?

[-] Deebster@programming.dev 10 points 7 months ago

No...?

[-] marcos@lemmy.world 7 points 7 months ago

Do not expect to find anything like Javascript craziness on other languages. Or you'll be severely disappointed.

[-] FizzyOrange@programming.dev 4 points 7 months ago

There are plenty of languages with warts at least as bad as JavaScript's. Bash, PHP, C, even relatively sane languages like Python still have huge issues like implicit variable declaration.

[-] SpaceNoodle@lemmy.world 6 points 7 months ago

JS and PHP are by themselves in a special ring of hell.

[-] TadoTheRustacean@programming.dev 1 points 7 months ago

Bash is a bigger one. Luckily there's nushell

[-] jubilationtcornpone@sh.itjust.works 4 points 7 months ago

for (const item in items) { }

for (const item of items) { }

[-] xigoi@lemmy.sdf.org 2 points 7 months ago

Still better than

for _, item in ipairs(items)

[-] TheAgeOfSuperboredom@lemmy.ca 4 points 7 months ago

Nope. In Rust, a semicolon denotes a statement while a lack of semicolon is an expression so you can't just omit them at will. This does lead to cool things though like if/else blocks being able to produce values if they end in an expression. But the expression type is checked so you're less likely to make a mistake. You can see an example here: https://doc.rust-lang.org/rust-by-example/flow_control/if_else.html

In JavaScript I never skip semicolons because I've seen those subtle bugs.