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- vec![] or Vec::new()? : r rust - Reddit
Since vec![] is actually expanded to calling into_vec on an empty boxed slice, the IR includes some unwinding stuff, while with Vec::new() you don't get that However in practice you still get the same generated code in the end, so it is a matter of taste; if it was not, I guess the vec macro would have been modified to expand to Vec::new
- Vec prepend, insert_from_slice : r rust - Reddit
Vec prepend, insert_from_slice Edit: Updated based on feedback I was surprised to see that these operations don't seem possible to do efficiently with the standard library, without resorting to unsafe code, inserting each element separately, or requiring a new heap allocation when there is sufficient capacity already
- Best expression to push or append to Vec and return resulting Vec
{ vec push(element); vec } or if you’re adding multiple elements either extend or extend_from_slice, e g : { vec extend(other_vec); vec } Unless of course you don’t care about performance in which case you can use concat
- Filing for unemployment + problems with VEC website : r rva - Reddit
Afterall, VEC owes me backpay close to $10k It initially tried to collect from me what it owed, but after a hearing and strong rebuttal, it went back cowering by saying it will grant me an overpayment waiver Something that I never asked nor need because, again, VEC owes me for the backpay that it failed to pay me during the pandemic
- How to get [u8] or Vec lt;u8 gt; from bytes:Bytes? : r rust
let slice = bytes; let slice = *bytes; let slice = bytes as_ref(); let vec = bytes into(); let vec = Vec::from(bytes); let vec_copy = bytes to_vec(); Depending on your preferences and what works best with type inference in you particular situation And here are the links, so you know what to look for in the future:
- The story continues: `Vec` now supports custom allocators! :) - Reddit
Regarding Vec, in particular, it's not so bad for passing arguments, as often times you'll pass a slice or an iterator, not a Vec per-se It's going to be more annoying with BTreeMap or HashMap, as there's no simplified API over them that doesn't expose the "owning" type
- Unable to create a new account on VEC. Need Help! [VIRGINIA] - Reddit
VEC is basically weaponized incompetence at this point to save the state money and report lower unemployment claim numbers I talked to our state representative and tried contacting the governor There is no one to call to escalate anything and no manager to talk to who knows what's going on
- How do I get n elements from Vec? : r rust - Reddit
some_vec iter() take(n) where n is the number of things you want to take Unsure about the last elements in a very simple way
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