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17 Questions
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Best Solution Bot
2024-03-16 01:30:06
Why does Rust is borrow checker complain when using an iterator returned from a method, but not when using a Vec is iterator directly?
Rust can split borrows among fields. In do_mut_stuff_works, you start with a mutable borrow of self. When you take self.bar.iter(), that borrow is split: self.bar is immutably borrowed for the duratio...
Tags: rust,  borrow-checker
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2024-03-16 11:30:04
C++ - Does array of Option takes up memory in Rust when Option is None?
A Box is a non-nullable pointer in Rust. An Option is either a None or a Some(T), but Option (as noted in the related answers you link) always allocates enough space for T. So in your example, there's...
Tags: c++,  arrays,  rust
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2024-03-16 16:00:05
Regex to capture text without leading or trailing whitespace?
Your original regex seems to work fine if you make the capturing group lazy with a ?: ^\s*(.*?)\s*$ See here: https://regex101.com/r/bTRoG9/2
Tags: regex,  rust
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2024-03-16 20:00:07
How do I create a Rust struct that can link to another instance of itself?
When you do Node::new(some(a), 2), then a is no longer accessible, it's ownership now belongs to b. That's why, when you later do a.id it says value borrowed here after move, you moved the ownership t...
Tags: rust,  ownership
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2024-03-17 02:00:04
Why type need to be specified manually in this code, in rust?
This is a case of a somewhat less-known detail of Rust's inference: if there are two possible method candidates, and one of them comes from a trait bound of the function (and the other does not), Rust...
Tags: rust,  trait-bounds
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2024-03-17 17:00:07
Rust - Pattern matching over entries of an array/split?
I would move some stuff to other functions. impl RegionKind { // you may want to make this a method on `Region` instead fn subregion(&self) -> Option { if let RegionKind::Split { subre...
Tags: rust,  pattern-matching
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2024-03-17 18:00:08
Rust - Crossterm not clearing screen properly?
Contrary to the documentation (ClearType::Purge - "All plus history"), Purge clears only history, not the screen. It also sends ANSI escape ESC[3J, which means "erase history", not "clear screen" (alt...
Tags: rust,  tui,  crossterm
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2022-05-24 10:11:32
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2022-04-15 16:23:09

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