TWiR quote of the week

[arthrowpod]

I'll know ide support is mature when the flame wars start.

- My friend

[mark-i-m]

impl Drop for Mic {}

from Rust Raps

Honestly, the whole thing deserves to be the quote of the week, but it's a bit long for a quote...

[frol]

People aren't kidding when they say Rust gives you superpowers. We spend more money on log storage than all of our servers combined. We can process so many requests [that] we have to spend more to store the logs from those requests than it costs us to actually process them.

State of the crates.io — Sean Griffin

State of the crates.io — Sean Griffin

Time: 24:29

[oberien]

Using [traits] for Inheritance was like putting car wheels on a boat because I am used to driving a vehicle with wheels.

How to become a Rust Super-developer

[nasa42]

In theory it would be entirely reasonable to guess that most Rust projects would need to use a significant amount of unsafe code to escape the limitations of the borrow checker. However, in practice it turns out (shockingly!) that the overwhelming majority of programs can be implemented perfectly well using only safe Rust.

u/PM_ME_UR_MONADS on reddit.

[cauebs]

"The name Rust suggests what it is: a thin layer on top of the metal." - /u/c3534l

Source: https://www.reddit.com/r/rust/comments/abm6hy/why_rust_is_successful_compared_with/ed1k1xl/?context=3

[Cerber-Ursi]

Quite complex description of the "find-this-method" task:

@ExpHP

my first thought upon seeing the question "I have an Iterator of X and need a Y " was to look at the FromIterator impls of Y .

If that impl didn’t exist, I’d then look for the following:

• Other FromIterator<X> impls for String to see if any of those X can easily be produced from char (and then I would call map before .collect() ).
• impl FromIterator<char> for Vec<u8> . If this existed I would use String::from_utf8(iterator.collect()) .
• impl Add<char> for String . If this existed, I would use .fold(String::new(), |s, c| s + c)
• methods of char to see if there’s anything that lets you obtain the bytes. Indeed, there is encode_utf8 , which even gives a &mut str , so one can write

.fold(String::new(), |s, c| {
    let mut buffer = [u8; 4];
    s += &*c.encode_utf8(&mut buffer);
    s
})

• idly check the inherent methods of String for whatever pops out at me

and if I could still find nothing after all of that I’d slam my head into a wall somewhere.

[Cerber-Ursi]

Found this in the old question on SO, looks like a rather laconic explanation:

Lifetimes are needed to prevent errors, but explicit lifetimes are needed to protect what little sanity programmers have.

[LukasKalbertodt]

When a turbo fish is very long, does it become a turbo eel?
-- @Enet4

https://chat.stackoverflow.com/transcript/message/45076604#45076604

[gilescope]

“Rust. Life is to short not to use Rust.”

From:

https://github.com/dpc/breeze/blob/master/README.md

[nagisa]

From #rust-offtopic

<CognitiveRadiation> ZANKOKU NA TENSHI NO YOU NI / BORROW-CHECKER YO, SHINWA NI NARE
...
<CognitiveRadiation> da kedo itsuka kizuku deshou? sono senaka ni wa / haruka mirai mezasu tame no non-lexical-lifetime ga aru koto!

[mark-i-m]

@nagisa

ZANKOKU NA TENSHI NO YOU NI / BORROW-CHECKER YO, SHINWA NI NARE

Translation please? It seems to be an anime reference?

[nagisa]

Translation please? It seems to be an anime reference?

It’s a few lines excerpt from a song that was used as an opening for Evangelion. You can find the full lyrics and their translations on the internet. It is something that’s somewhat commonly parodied.

[Naorume]

@nagisa

From #rust-offtopic

<CognitiveRadiation> ZANKOKU NA TENSHI NO YOU NI / BORROW-CHECKER YO, SHINWA NI NARE
…
<CognitiveRadiation> da kedo itsuka kizuku deshou? sono senaka ni wa / haruka mirai mezasu tame no non-lexical-lifetime ga aru koto!

@mark-i-m

Translation please?

Like a cruel angel
Borrow-Checker, become the legend.
…
However someday you'll probably realize? that what's on your back
is the Non-Lexical-Lifetime that is there for take you towards the far future.

( These are not my native languages but... I wasn't able to resist the temptation )

[ssokolow]

I don't have them handy to check, but I seem to remember the official subtitles saying "a legend" rather than "the legend", which would make sense given that Japanese doesn't use articles the way we do and the turn of phrase is generally "become a legend", not "become the legend".

("a cat", "the cat", and "cats" are all "neko". It's disambiguated by the rest of the sentence as needed.)

For what it's worth, it also lines up with a nice fandub I ran across which fits English to the melody by translating it as "Like an angel who has forsaken sympathy, Rise up young boy and make yourself a legend." ("Borrow-checker" replaced "Shōnen", which basically means "boy".)

[hercychang]

最详细的面试题目解答

LeetCode is now supporting Rust!

[TomP]

from Rust stability in 2019 - #49 by DrizztVD1

[Rust] can replace C++ without any competition: it’s a race of one with the only requirement to not fall off the racetrack.

[Cerber-Ursi]

Two quotes at once:

@droundy

what the idiotic way to choose the size in rust? using “usize” and “isize”?

I presume you mean idiomatic? There are unlimited idiotic ways to do things in any programming language.

@droundy

Use usize for counting things that are in memory. Otherwise use the right size for whatever you are doing. Don’t use u32 to track the U.S. national debt, but it’s fine for counting the eggs in most recipes.

[dodomorandi]

@DanielKeep on length of strings

@DanielKeep

Any time you think something involving text is simple, it probably isn’t. It’s probably a screaming nightmare of complexity and edge cases that only gets worse over time.

[Cerber-Ursi]

Debugging is a scary thing:

@LittleBoxes

After a ton of expect(“with some funny message inside”), the evil unwrap who was making my game panic has appeared… A dark story of Deadly Path.

(text is a little changed grammatically, but the formulation is preserved)