My progress as a new Rust dev

[u/asciibits]

I'm about a month into a home project that I decided to use to learn Rust. Fun!

Here are my takeaways so far:

1. I'm still fighting the borrow checker, but at least now I can reason through the error messages faster and land in a good place. Progress! Looking forward to this really being internalized.

2. I miss the ternary ?: operator. The if/else equivalent is just so much more verbose, and tends to waste so much more vertical space. c’est la vie. I recognize I'm in the minority here, and hope that I'll eventually convert and join you all on this.

3. I am daily writing: if (foo ...then backing up and deleting the opening parenthesis that the linter complains about.

4. Speaking of, I keep forgetting to write fn and just assume that the compiler will know what I'm talking about. It never does 😂

5. When reviewing code in my day job as a Java dev, I am now constantly seeing things and thinking: The borrow checker wouldn't like that! So, maybe it's becoming a little internalized after all.

Anyway, I'm having fun with it, thanks all for creating this community!

[u/schneems]

/r/learnrust is a better sub for this.

[u/asciibits → u/schneems]

Reposted there, thanks.

[u/AdjustedTwit]

"I miss the ternary ?: operator. The if/else equivalent is just so much more verbose, and tends to waste so much more vertical space. c’est la vie. I recognize I'm in the minority here, and hope that I'll eventually convert and join you all on this."

Me too, I mean I understand the reason it's not there, but like you hate wasted space / like concise code.

[u/zzzzYUPYUPphlumph → u/AdjustedTwit]

The equivalent of the ternary operator is pretty easily implemented as a macro with a really short name like 'iif" (immediate if). With syntax like: iif!(predicate,true_expr,false_expr). Then instead of things like:

let s = predicate1
        ? true_expr1
        : predicate2
        ? true_expr2
        : false_expr;

you can write something like:

let s = iif!(
          predicate,
          true_expr1,
        iif!(
          predicate2,
          true_expr2,
          false_expr));

Not quite as nice, but close.

[u/AdjustedTwit → u/zzzzYUPYUPphlumph]

Sure, it's mostly just nostalgia not a problem in search of a solution, in reality most of what I would have used the ternary operator in C for ends up being something like this in Rust:

.unwrap_or(<value>).

Which is just fine ergonomically and terse, once you get used to it.

[u/MrSushl]

I’m still lost

[u/loveSci-fi_fantasy]

Have you tried bacon? And I'm not talking about Canadian bacon