api_secret etc. not left blank in run code. only to hide it here. get output : {'code': '400005', 'msg': 'Invalid KC-API-SIGN'} it works for other POS ...

Coming from this code template which works: { fn f3( _s : &String) {} fn f( s : &String) -> impl FnMut() { let s2 = s.clone(); ...

I have a function I am attempting to return a tuple of values from: fn get_two_bytes(data: &[u8]) -> (Vec<(u8, u8)>, BTreeSet<(u8, u8 ...

I'd like to have a struct called Factory that dynamically produces new Strings, keeps them inside itself and returns &str borrows of them that liv ...

I'm attempting to optimize an application through smart cloning and borrowing, and I'm observing the following behavior. The program below wouldn't wo ...

The following test program would not compile: It generates the well-expected error: However, if you treat my_string with the to_string() method, ...

In Rust, the lifetime of a value is between the point of definition and the point of going out of scope. However the out of scope can be the end of a ...

I am lost at the mutable references ... Trying to send a DataFrame into a function ... change it and see the changes after the function call completes ...

here is a simplified version of a Font object I'm currently building for inclusion in an embedded system. Inside the Font, I implement a cache of alre ...

This is what I am basically trying to do in pseudocode: I cannot borrow list and I really just can't figure out another way to do this. ...

Here's the code so far, the relevant lines are 27 and 28: https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=37bba701 ...

New to Rust and trying to teach myself, etc. I'm stuck on a lifetime issue. The closest question I could find that was already posted was: Argument r ...

I am trying to implement a simple bucketed hash table in Rust (just for practice). The hash table struct is defined as: pub struct BucketedHashTable& ...

I have a programming assignment of creating a bubble sort using Rust. I don't really have much experience in Rust so this is a little bit hard for me: ...

I was unsure if I should post this here or in code review. Code review seems to have only functioning code. So I've a multitude of problems I don't r ...

I got a question about how to move a variable into a vector but without destroying this variable because it has to be reused in a loop. Below shows wh ...

I'm fairly new to rust, and still learning the rust ownership model. I'm working on a piece of code where I hold a reference to a point in the data st ...

I ran the following example in the standard library documentation, and there was a puzzle. I found an implementation of the BorrowMut trait with Vec， ...

Looking for a way to push in both Vec<Vec<>> and it's inner Vec<>. I do understand why it fails, but still struggle to find some gra ...

Consider next code: fn get_ref<'a, R>(slice: &'a Vec<i32>, f: fn(&'a Vec<i32>) -> R) -> R where R: 'a, { f(sl ...