Search results
- Dictionaryrust/rʌst/
noun
- 1. a reddish- or yellowish-brown flaking coating of iron oxide that is formed on iron or steel by oxidation, especially in the presence of moisture: "paint protects your car from rust"
- 2. a fungal disease of plants which results in reddish or brownish patches.
verb
- 1. be affected with rust: "the blades had rusted away"
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Jul 18, 2017 · const BUFFER: usize = 512; However, this is not preprocessor: as underscore_d's comment says, the usage of preprocessor is a pretty archaic mechanism. It has been replaced in Rust with: const in case of literal value; macros, to generate code. You can understand the Rust's const keyword as "evaluated at compile-time".
Dec 26, 2018 · I am trying to declare a const String in stable Rust but it does not let me declare it: const CONSTANT_VALUE: String = String::from("constant value"); fn main() {. println!("{}", TARGET_PORT_KEY); } It is saying that: Calls in constants are limited to tuple structs and tuple variants. I do not want to declare my string as literal and call to ...
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12. In a non main.rs (or lib.rs) file if you want to include from a file in the same directory then the code below works. The key is to use the word super:: for the include. (This is how I rewrote the answer of rodo without using path.) Directory tree: src ├── main.rs ├── my.rs └── my ├── a.rs └── b.rs.
Jan 25, 2018 · I want to learn how to properly deal with errors in Rust. I have read the book and this example; now I would like to know how I should deal with errors in this function: fn get_synch_point(&se...
May 15, 2015 · Rust has a couple different array-ish types. Vec<T> ("vector"): Dynamically sized; dynamically allocated on the heap. This is probably what you want to use. Initialize it with Vec::with_capacity(foo) to avoid overallocation (this creates an empty vector with the given capacity). [T; n] ("array"): Statically sized; lives on the stack.
This creates an empty mutable 4x4 array of u8 values that can be resized up to a maximum of 4 elements. Keep in mind that when creating a two-dimensional array in Rust, the innermost dimension should come first in the type, followed by the outer dimensions. So in the examples above, the type of state is Vec< [u8; 4]> or ArrayVec< [ [u8; 4]; 4]>.
Oct 26, 2013 · As of Rust 1.70, there is also the OnceLock synchronization primitive we could use in cases where we just need a static global variable that is initialized (written to) only once. Here is an example of a static global read-only HashMap: use std::collections::HashMap; use std::sync::OnceLock;
May 28, 2018 · I have a function without argument that builds and returns a Vec, and the corresponding result is always the same. I want to call that function only once and store its result in a global variable or
Apr 9, 2015 · Here's the helper function that I tried writing in Rust, but I think the slicing syntax 0..size is offending the compiler. Besides, it looks more verbose than the C version. Besides, it looks more verbose than the C version.
