I just installed Exercism and would like to test if I managed to complete the hello-world assignment.
I changed the hello_world.dart file in the lib folder to print the solution, but now I am struggling with running the test file.
In the guide it says to simply run
$ pub run test
Is the $-sign meant to mean something to me? Cause all I am getting is: "'$' is not recognized as an internal or external command,operable program or batch file." I have the same issue with running "pub get" or "pub run test". (What does pub mean?)
To summarize, I ran:
exercism configure "my token"
exercism download --exercise=hello-world --track=dart
cd C:\Users\Martin\exercism\dart\hello-world
I changed the file in C:\Users\Martin\Exercism\dart\hello-world\lib
And then I tried
$ pub run test
pub run test
pub get
And none of these seem to do anything. So, I don't know how to test my file.
I do have flutter installed and run is fine with Android Studio, if that is relevant. It seems to me that I can choose to write the solution in both notepad++ or Android Studio.
Thanks for any help
pub is package manager for dart programming language, just like npm for javascript. Since you've installed it on WINDOWS i'm guessing you used choco - package manager to install the dart-sdk. https://dart.dev/get-dart.
Once installed make sure you've set dart-sdk the path in Environment variable.
Related
I'm trying to build the "latest" version of Appium Desktop from source (on a Mac), but I'm clearly not doing something that I need to be doing, because no binary is generated after I run all the build commands.
So, I've downloaded and unpacked the .zip archive https://github.com/appium/appium-desktop/archive/v1.16.0.zip, opened up a terminal session inside the root of the source directory, and followed the online instructions for building from source--but I think this is for the server build https://appium.io/docs/en/contributing-to-appium/appium-from-source/#running-appium-from-source
npm install
npm run build
node .
And it all appears to work successfully! I get a "build completed" message and life looks fab, but nothing launches as far as an app is concerned, and I can find no .app file anywhere in the source directory. And, oddly, there are no build instructions to be found anywhere in the source directory. There's a "ReadMe.md" file but it provides no instructions on how to build from source.
Can someone please tell me what I need to do to build and launch Appium Desktop (not the server) from source? (Oh, I also ran appium-doctor and it gave me a clean bill of health.)
Any feedback would be most appreciated!
Thanks,
Wulf
You've already run npm install so it should be as simple as running npm run dev if you want it in dev mode or npm start if you want non-dev.
See the Contributing to Appium Desktop readme for more.
I'm trying to get started and setup to develop Dart.
I'm following the instructions on https://webdev.dartlang.org/guides/get-started to install on Linux. However there seems to be an essential step missing.
On the above link, step 2 is about installing the SDK.
Step 3 is titled:
Get CLI tools or WebStorm (or both)
However step gives examples of using the pub command, and the links it references also use this command, however there are no instructions on where to find the pub utility or how to install it.
I would have assumed that pub was provided as part of the Dart SDK. I can run dart in my terminal, and see that it is installed. For example dart --version returns Dart VM version: 2.0.0 (Unknown timestamp) on "linux_x64". But pub returns zsh: command not found: pub
My question, therefore, is where do I find, and how do I install pub?
You need to add thedart-sdk/bin directory to the system PATH variable.
Can anyone tell me why my app is not installing at all and ending with the error message
Observatory connection never became ready.
the app was working perfectly fine until yesterday .
I have changed the channel to master yesterday in the command prompt and from then on the app never runs.
I even switched back to channel alpha but still no use.
I have attached a screenshot of the command prompt where the installation was stuck forever.
I am not so sure if I need to reinstall the flutter. I am worried if I uninstall the flutter now it may not configure properly and I might break it forever.
Please can someone tell me what exactly might have gone wrong.
Many Thanks,
Mahi
Instead of reinstall try with following: (Mac)
Set Path Variable: via following terminal command
export PATH=~/flutter/bin:$PATH;
that is bin folder path of flutter.
export PATH=[PATH_TO_FLUTTER_GIT_FOLDER]/bin:$PATH
https://flutter.io/setup-macos/#update-your-path
If above not worked. Check with the Dart version
dart --version
Install the latest dart version:
brew install dart --devel
Hope this helps others.
For Mac
open terminal
$ echo $PATH
it will show like this
/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:
it means you need to add flutter in to path
Open Finder presss command + shift + G
Put /etc/paths in dialog and press GO
Copy the file "paths" and paste it on desktop
Then open the pasted "paths" file from desktop
and add following line into end of the file "/flutter/bin"
Then copy that file and again paste it on /etc/paths
same like step no 2
it will ask you to replace or not
press replace
Now if you hit $ echo $PATH on terminal it will show
/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/swagat/development/flutter/bin
Now your $flutter doctor will work perfectly
The solution is from Google Groups #Flutter-Dev
Thank you very much for your reply #Michael Thomsen.
I've tried what you have suggested and the details are as follows:
When I used flutter run -v command the command prompt output is as follows:
It was stuck for a while at waiting for port connection if I am not wrong.
So I've used AndroidStudio, File>Open and selected android/ folder to run the app then the gradle was showing an error:
Error:Conflict with dependency 'com.android.support:support-annotations' in project ':app'. Resolved versions for app (25.2.0) and test app (25.4.0) differ. See http://g.co/androidstudio/app-test-app-conflict for details.
I modified the build.gradle(Module:app) to show the correct version of 25.2.0 which was previously showing 25.4.0.
dependencies {
androidTestCompile 'com.android.support:support-annotations:25.2.0'
}
I just saved the changes inside android studio and the gradle sync completed without any errors.
Now I can run the app from inside Android Studio and also from IntelliJ IDE.
Thanks very much Michael this solved my problem.
Reinstalling flutter would be my starting point. If this problem persists, please post the output of $>flutter doctor and a description of what exactly leads to this error.
While running the Get Started guide for Dart and using WebStorm as per the docs, Dartium window shows "502 Bad Gateway" when trying to run index.html for the first time.
When inspecting the IDE, the Pub Serve console shows an error while trying to run % .../pub serve web --port=<port>:
No pubspec.lock file found, please run "pub get" first
I went into my get_started project folder on the terminal and ran the same pub serve command and got the same error.
I am running WebStorm 2016.3.2 and Dart sdk 1.21.0 on Linux x64.
What is the proper procedure to follow here?
WebStorm IDE has been known to have this bug where it fails to run pub get on a project which will cause failures when trying to run the project.
To verify if this is occurring, go into the IDE and check for a Pub Serve warnings message at the bottom of the window. If you see the errors outlined in the OP, then this solution should work.
The problem without running pub get is that the project dependencies have not been resolved and thus the server cannot start.
In the IDE, check the project root for a file pubspec.yaml. Right click the file and select Pub: Get Dependencies. Check the Messages window to follow for the progress. If it finishes ok, the problem should be corrected.
Alternatively, you could run pub get manually from command line as you would do without an IDE.
[Update] The Dart team has updated the documentation to guide users on this issue: https://kw-webdev-dartlang-1.firebaseapp.com/guides/get-started (Pull request #329)
When putting git: dependency in the pubspec. I get the following error:
'Running pub install' has encountered a problem.
...
...
...
Please ensure Git is correctly installed.
My git is installed at version 1.8.0 that I can access via the terminal on my Mac OS X 10.7.5.
Thank you in advance for any help.
I think the problem is that git's path is loaded to PATH only on terminal start up. Terminal does this by running a file ~/.profile or ~/.bash_profile that often exports the paths to commonly used programs. As a consequence, a GUI app such as the Dart Editor can't 'see' git as it doesn't run this start up file.
There is a way to make certain paths visible to all applications though.
See: https://serverfault.com/questions/16355/how-to-set-global-path-on-os-x/277034
Try creating a file:
/etc/paths.d/git
With the following contents:
/usr/local/git/bin/
If your Git installation is located somewhere else, then use the path accordingly.
I decided to just navigate to the dart project folder and run pub install on the terminal.