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by Thiez 3442 days ago
I suppose it can get a little silly when you mix closures without arguments and the logical 'or' operator', e.g.:

    // prints 'true'
    println!("{}", true||(||true)()||(||true)());
Of course you wouldn't actually do this unless you're being intentionally obscure. Another favorite of mine:

    // prints '()'
    println!("{:?}", (||||||||||())()()()()());
But I can't recall ever running into such silly code, in practice the closure syntax and logical or do not lead to confusion (imho, ymmv).
1 comments

> in practice the closure syntax and logical or do not lead to confusion (imho, ymmv).

That's true. But put your self in the mind of a C developer looking at Rust code for the first time:

     if a || b {
       println!("True");
     }
Cool.

Then:

     thread::spawn(|| println!("Hello from a thread!"););
What? What is the logical or doing there?

----

IIRC, there are also cases where you have to write `& &` instead of `&&` to not confuse the compiler. That's a design/practical issue.

Both those issues would have been avoided if literal `and`/`or` were used.

I find it interesting how the only thing that momentarily confused me, as a C developer, about Rust syntax, was caused by Rust authors not wanting to syntactically deviate too much from C.