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myrrlyn

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myrrlyn
·4 yıl önce·discuss
why isn't it inconsistent to allow creation of a record with missing components but to deny creation of a stack frame with missing components
myrrlyn
·4 yıl önce·discuss
good
myrrlyn
·4 yıl önce·discuss
yeah the actual titleholder to those is seattle
myrrlyn
·4 yıl önce·discuss
rustup is available in your package manager's repository
myrrlyn
·4 yıl önce·discuss
> C is an amazing language

[citation needed]

> the best way to use C is to use it to implement core algorithms and data structures

is this a joke. you literally cannot write containers in C unless you commit to heap-allocating everything and storing it as void*

> Most software engineers I know who have a background in EE love C, simply because it maps very well to what a processor actually does during execution.

lol. no it absolutely does not. i have a B.S. CpE and have actually built simple processors. the C execution model has nothing to do with how silicon operates, and modern silicon in particular goes to absurd lengths to put up a façade that c programs can use to pretend they're still on a pdp-11 while the processor goes and does other things.

easy example: here's a memory address. what happens when you try to read from it
myrrlyn
·4 yıl önce·discuss
lol.
myrrlyn
·4 yıl önce·discuss
given that the sole purpose of software is to do what people want, "it didn't do what i want" is automatically incorrect behavior
myrrlyn
·5 yıl önce·discuss
is this going well for you
myrrlyn
·5 yıl önce·discuss
?
myrrlyn
·5 yıl önce·discuss
> Rust must stabilize its ABI if it seeks to be a useful systems language.

? no it mustn't. what's the c++ abi
myrrlyn
·5 yıl önce·discuss
> Having multiple implementations is a sign of a healthy programming language

this is frequently taken as axiomatic but there's no actual support for it in reality. there are plenty of healthy single-implementation languages (go, rust, scala, erlang) and plenty of unhealthy multi-implementation languages (c, d, sql, javascript) to go alongside the healthy/multi (python, ruby) and unhealthy/single (php, i guess, i don't care about this quadrant very much)
myrrlyn
·5 yıl önce·discuss
why not
myrrlyn
·5 yıl önce·discuss
(there are none)
myrrlyn
·5 yıl önce·discuss
every time this comes up i just have to ask

- what do you think a language standard is or does

- what languages with standards do you think standardization has helped (this is a trick question! do not answer "c" or "c++"!)

- in which languages with standards is a plurality of code written to that standard? (this is also a trick question! do not answer "c", "c++", or "javascript"!)
myrrlyn
·5 yıl önce·discuss
PRs welcome!
myrrlyn
·5 yıl önce·discuss
yeah, bounds written on the type decl shouldn't be repeated on the impl. the current typeck is not smart enough to do that but the ever-"nearly there we promise" replacement is. it'll land one day. they promise
myrrlyn
·5 yıl önce·discuss
the reason for

> I still feel uneasy depending on so many other crates, but this seems to be a level of paranoia that others in the community don't share. Having 1000 dependencies sounds crazy to me! If there's a bug in even one of them that affects you then there's gonna be a lot of digging to figure out the cause

is that there is far, far more likely to be a bug in the version you write on your own to achieve the same goal than there is in a widely-observed library written by somebody who's chosen to specialize in that specific thing
myrrlyn
·5 yıl önce·discuss
> What slice of Rust users are both such noobs they haven’t heard of cargo-edit and can’t Google it, but also so advanced they are interested in implementing Future manually to deepen their understanding?

My colleagues. Many people are skilled programmers jumping into obscure problems with only a baseline level of familiarity with the greater environment.
myrrlyn
·5 yıl önce·discuss
I am the author of a library that requires knowledge and awareness of integers that are strictly not wider than the general purpose register on the processor; the fact that `usize` is "the largest GPR" on every target Rust knows about is great but I'd still appreciate a distinction between "this fits in exactly one GPR" vs "this fits in the address bus"

_especially_ since the library in question creates pointers that are wider than `usize`