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I have a project with multiple files which all depend on each other which worked fine. I added another file and added the use crate::asteroid::Asteroid syntax to another file.
When I compile it says
unresolved import "crate::asteroid"
This worked with all the other files. What is wrong?
Project layout:
/src/
asteroid.rs
command.rs
direction.rs
game.rs
main.rs
point.rs
ship.rs
The use keyword will import only the path specified, so when you use crate::asteroid::Asteroid only the Asteroid object will be imported, but not crate::asteroid. In order to import both, you can use:
use crate::asteroid::{ self, Asteroid };
Here self is referring to crate::asteroid. You will then be able to access both asteroid and Asteroid
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I'm not expert with cmake building and today I faced with following:
When I build project locally (using Windows and mingw) everything builds fine. But under git lab CICD environment (debian) I got the next error:
... no template named 'vector' in namespace 'std'
is included in this file but not directly - myfile.cpp includes myfile.h and myfile.h includes
Why this happens? How can I reproduce this behavior locally (some cmake options or something like this)?
Thank you!
Update: This is an example issue making code. I don't want to build this under mingw, instead of this I want to get similar error as under CI/CD environment (... no template named 'vector' in namespace 'std')
---my.h---
#include <vector>
---my.cpp---
#include "my.h"
std::vector<int> int_vector;
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I'm using the latest stable version: rustc 1.46.0 (04488afe3 2020-08-24).
Rust Analyser needs the import:
use chrono::offset::TimeZone;
in order to accept the expression:
Utc.ymd(1970, 1, 1).and_hms_milli(0, 0, 0, 200)
(It highlights the .ymd as {unknown}.)
If I add the import, the compiler issues a warning:
Compiling foo v0.1.0 (/home/fadedbee/foo)
warning: unused import: `chrono::offset::TimeZone`
--> src/bar.rs:2:5
|
2 | use chrono::offset::TimeZone;
| ^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `#[warn(unused_imports)]` on by default
How can I make Rust Analyser (in vscode), and the compiler, both happy?
Update:
As rodrigo correctly deduced, the only uses of .ymd are within a #[cfg(test)] section.
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ERROR: Could not find com.android.tools.build:gradle:6.0.1.
Searched in the following locations:
- https://jcenter.bintray.com/com/android/tools/build/gradle/6.0.1/gradle-6.0.1.pom
If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration.
Required by:
project :
Add Google Maven repository and sync project
Open File
You need to add google() to your plugin repositories like so:
buildscript {
repositories {
google()
}
}
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Attribute Error: module 'Orange.widgets.gui' has no attribute 'WebviewWidget'
Part of the source code importing WebviewWidget
When I tried importing the module Orange.widgets.utils.webview and when I look for WebviewWidget attribute...there is none...only a description about it. Here is the text in the description of the module:
DESCRIPTION
This module holds our customized WebView that integrates HTML, CSS & JS
into Qt. WebviewWidget provides a somewhat uniform interface (_WebViewBase) around either WebEngineView (extends QWebEngineView) or
WebKitView (extends QWebView), as available.
Problem solved!!! The problem was QtWebKit was not installed in my system...installed it and it worked fine...I also included the pyqt5 and debug package...
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Does anyone know the file extension for Hack? I've looked pretty much everywhere, and can't seem to find it. Thanks
HHVM supports 4 file extension for hack .hh, .hck and .hack.
starting from hhvm 4, hack now uses the .hack file extension by default which doesn't require the <?hh opening tag.
We now recommend using the .hack file extension if your editor/IDE support it;
files with this extension are always strict, and do not require or allow a <?hh header line.
For example, this is a complete .hack file:
#!/usr/bin/env hhvm
<<__EntryPoint>>
function main(): noreturn {
print("Hello, world!\n");
exit(0);
}
example.hh / example.hck / example.php :
<?hh // strict
<<__EntryPoint>>
async function main(): Awaitable<void> {
print 'hello, world';
}
example.hack :
<<__EntryPoint>>
async function main(): Awaitable<void> {
print 'hello, world';
}
The vim plugin for hack uses the extension .hh for hack files
vim-hack github
I have read something about it in wikipedia: https://en.wikipedia.org/wiki/Hack_(programming_language)
and I think that you can use .php because it should be similar to php.
Hope it will help you :)
Hack was created by Facebook as a dialect of PHP. They use .php files for their projects write in hack.
** -- UPDATE 2020 -- **
Today on their hite Hack recomendo use .hack as extension https://docs.hhvm.com/hack/getting-started/tools
vscode Hack languae extension continue to use .php as extension on their examples https://marketplace.visualstudio.com/items?itemName=pranayagarwal.vscode-hack