advent-of-code | My Advent of Code solutions | Learning library
kandi X-RAY | advent-of-code Summary
kandi X-RAY | advent-of-code Summary
My Advent of Code solutions
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of advent-of-code
advent-of-code Key Features
advent-of-code Examples and Code Snippets
Community Discussions
Trending Discussions on advent-of-code
QUESTION
I'm trying to get use a BTreeMap (or HashMap) from within a struct but I can't because it keeps complaining an ownership problem.
cannot move out of
self.vertices
which is behind a shared reference move occurs becauseself.vertices
has typestd::collections::BTreeMap>
, which does not implement theCopy
trait help: consider borrowing here:&self.vertices
rustc(E0507) digraph.rs(13, 17): move occurs becauseself.vertices
has typestd::collections::BTreeMap>
, which does not implement theCopy
I'm totally confused at this stage.
...ANSWER
Answered 2020-Dec-05 at 22:56The problem seems to be that you're trying to mutate something that you have not marked as mutable. The add_edge
method clearly has to mutate the struct but you have an &self
receiver instead of an &mut self
. Upon making that change the code compiles:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install advent-of-code
On a UNIX-like operating system, using your system’s package manager is easiest. However, the packaged Ruby version may not be the newest one. There is also an installer for Windows. Managers help you to switch between multiple Ruby versions on your system. Installers can be used to install a specific or multiple Ruby versions. Please refer ruby-lang.org for more information.
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page