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Results tagged with rust
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user 7245
Rust is a systems programming language focused on three goals: safety, speed, and concurrency. It maintains these goals without needing a garbage collector, making it a useful language for a number of use cases other languages aren't good at: embedding in other languages, programs with specific space and time requirements, and writing low-level code, like device drivers and operating systems.
4
votes
Accepted
single byte xor decryption code
extern crate hex;
extern crate is generally not necessary for programs since the 2018 (currently latest) edition of Rust. … Of course, for a well-made command line program, you'd want to print your own better-formatted error message, instead of a Rust "panic" error. …
- 916
2
votes
Accepted
Idiomatic Approach to Filter Struct Field - Rust
There is a method that directly does what you want: Vec::retain.
pub fn remove_name(&mut self, name: &str){
self.current.names.retain(|n| n != name);
}
If retain didn't exist, it woul …
- 916
8
votes
Accepted
Rust Simple Stats Program
io::stdin().read_line(&mut num);
Here you are ignoring the Result from read_line; you should have seen a compiler warning about this. Add .unwrap() or .expect() to check the error and panic if there …
- 916
5
votes
Accepted
Rust returning multiple errors
If you expect to handle the errors (to recover from them in a way that is specific to which error occurred), or if you're writing a library, then define an enum type which can hold any of the errors …
- 916
2
votes
Rust: lazy_static the strings from evdev codes
short_key_name is a &str that was borrowed from key_name, a String allocated inside the loop and which will be dropped at the end of each loop iteration. Thus, it is not a &'static str.
You can use Bo …
- 916
1
vote
Accepted
Trying to find an idiomatic Rust way of calling a series of functions and early out'ing on f...
Technically you could use iterators to do this:
pub fn new(data: &[u8]) -> Option<MyStruct> {
let result = MyStruct {
// initialize fields
};
[
Sel …
- 916
5
votes
Accepted
Make a config, that is periodically refreshed by a background thread, easily accessible to t...
You can change
config: Arc<RwLock<Config>>
...
fn get_config(&self) -> Config {
to
config: Arc<RwLock<Arc<Config>>>,
...
fn get_config(&self) -> Arc<Config> {
This way, while you do still need t …
- 916
6
votes
Accepted
Handling default std::io::Error in Rust
Rust functions should be named with snake_case, not camelCase.
Use standard code formatting, as performed by cargo fmt. …
- 916
1
vote
First Rust program - squares which are sum of squares
The main readability improvement I see is using for and ranges for all of your loops — this is debatable but I see it as highlighting that the overall structure of your program is about iterating over …
- 916
5
votes
Accepted
Custom derive macro to create getters and setters
The code uses both proc_macro and proc_macro2, is this necessary?
This is normal. proc_macro is the compiler API stub, only available to proc-macro crates, and proc_macro2 is a plain library that do …
- 916
3
votes
Accepted
Image scraper using Dependecy Injection in Rust with generics
is that how DI is supposed to be done in Rust? … The Rust toolchain includes a linter that will tell you things like this: run cargo clippy and see what it says. …
- 916