logo
down
shadow

RUST QUESTIONS

Why did Rust go with "match" instead of "switch" or "case"?
Why did Rust go with "match" instead of "switch" or "case"?
it fixes the issue The Rust Reference cites Standard ML (SML) and OCaml as an influence for pattern matching. In OCaml, pattern matching uses the match keyword.The original Rust compiler was written in OCaml, so it makes sense that OCaml would have h
TAG : rust
Date : November 21 2020, 11:01 PM , By : User
How to get subslices with neither panicking nor unsafe?
How to get subslices with neither panicking nor unsafe?
I wish this helpful for you Now you can just use the get method on the slice.I copied the code below from The document of that method.
TAG : rust
Date : November 17 2020, 11:01 PM , By : Joe24
Why does io::copy require the reader and writer to both be mutable references?
Why does io::copy require the reader and writer to both be mutable references?
Any of those help Because Read types are, in general, one-shot: by reading from it, you are mutating it.Consider standard input: you can only read from that once, so something must be changing. When you read from a socket, you're almost certainly mut
TAG : rust
Date : November 14 2020, 11:01 PM , By : Joel Johnson
How can I sum a range of numbers in Rust?
How can I sum a range of numbers in Rust?
This might help you The problem is that you are creating an array of ranges (square brackets) but you just wanted the range (on which fold is defined).Another thing is that range syntax (..) is only inclusive of the lower bound. It's exclusive of the
TAG : rust
Date : November 11 2020, 11:01 PM , By : P. Forward
Using a HashSet to canonicalize objects in Rust
Using a HashSet to canonicalize objects in Rust
should help you out I somewhat disagree with @Shepmaster on the use of unsafe here.While right now it does not cause issue, should someone decide in the future to change the use of HashSet to include some pruning (for example, to only ever keep a hun
TAG : rust
Date : November 04 2020, 11:01 PM , By : Nguyễn Hùng
Mismatched types in if let statement: found Option expected Result
Mismatched types in if let statement: found Option expected Result
it fixes the issue You linked to the documentation of next, but you're not using next (not directly anyway), you're using a for loop. In a for loop the type of the iteration variable (i.e. the type of line in your code) is the Item type of the iterat
TAG : rust
Date : November 01 2020, 11:01 PM , By : Adilene Garcia-Miran
Why doesn't `Box::into_raw` take `self` as parameter?
Why doesn't `Box::into_raw` take `self` as parameter?
I hope this helps . Because 99.995% of the time (statistic totally made up), you expect method calls to happen to the thing being pointed to, not to the pointer itself. As a result, the "smart pointer" types in Rust generally avoid doing anything to
TAG : rust
Date : November 01 2020, 12:01 AM , By : Maria Guschina
What's the difference between `<T: Trait>` and `where T: Trait`?
What's the difference between `<T: Trait>` and `where T: Trait`?
this will help Trait bounds defined inside a where clause are a superset of the trait bounds declared inline. The inline style existed before the where clause; the where clause was introduced in RFC 135:
TAG : rust
Date : October 22 2020, 03:08 PM , By : Telempe
shadow
Privacy Policy - Terms - Contact Us © soohba.com