When I try to import the 'Rect'-struct from System.Windows, IronPython-Interpreter claims that it cannot import.
Since I am using the IronPython Tools for Visual Studio, i can also see that the IntelliSense-DropDown does not show this struct.
Is there a need for a special statement for importing this struct?
Thanks!
You probably need to do:
import clr
clr.AddReference('WindowsBase')
to load the assembly Rect is declared in before importing it.
Related
I have a set of Swift Packages that I'm writing (ex: CUIExpandableButton), that I'd like to roll up into another Swift Package called CrystalUI. The overall goal is to write a set of packages that get bundled into a single package. However, I want to make it so people can just have one import
import CrystalUI
instead of a series of import statements
import CrystalUI
import CUIExpandableButton
import PreviewKit
...
Is it possible to re-expose an existing library as part of the parent library?
Looks like #_exported Is what I was looking for. Found this article that explains it. It's an unsupported method but it's also used in Alamofire so I think it's safe.
I'm having trouble using the Backendless plugin for Flutter.
I include
import 'package:backendless_sdk/backendless_sdk.dart';
(as per the instructions) and can then use e.g. Backendless.UserService. But if I try to generate a user to register, e.g.:
var user = new BackendlessUser();
user.setEmail("info#example.org");
user.setPassword("password");
Backendless.UserService.register(user);
I get an error Undefined class 'BackendlessUser' on the first line. This class is defined in src/modules/user_service.dat, which is exported by src/modules/modules.dartlike this:
library modules;
export 'cache.dart';
...
export 'user_service.dart';
which in turn is imported by backendless_sdk.dart like this:
import 'package:backendless_sdk/src/modules/modules.dart';
I would have thought that it would get imported indirectly by the import of backendless_sdk.dart, but apparently not. When I import it explicitly (with the same import statement, but now in my own code and not just indirectly in backendless_sdk.dart), I get a warning Don't import implementation files from another package. But it's not an implementation file; it's exported as part of the public API (at least that's what I understand the export statement to mean).
The Dart tutorial for creating packages suggests to place the export statements directly under lib, not in lib/src, so I'm wondering whether this is an error in the structure of the plugin, or whether I'm doing something wrong.
I'd be grateful both for a solution to this particular problem and also for pointers to how I can better understand packages, libraries, imports and exports in dart; unfortunately I don't find the language specification particularly helpful in this regard.
(The error and the warning are the same whether I use flutter analyze or IntelliJ IDEA.)
The problem has been fixed in the 0.0.3 version of the plugin. Please update the backendless_sdk version in your pubspec.yaml.
You can include the only one import now:
import 'package:backendless_sdk/backendless_sdk.dart';
Please also note, that there are some changes in the syntax. So for your example you should use:
var user = new BackendlessUser()
..email = "info#example.org"
..password = "password";
Backendless.userService.register(user);
Thanks for using Flutter SDK and pointing out this issue.
It's indeed the problem in the structure of the plugin. The Backendless team is aware of it and this problem will be fixed in the next release of the plugin.
For now you can import explicitly and suppress the warning.
Probably a basic mistake, but the cause is eluding me. I am trying to import a package, but I get an error saying it cannot be found or imported.
First I set the current directory to the parent directory of the package, and this does not work.
Second, the docs say that the parent folder of the package must be added to the matlab path. I tried this, and still no luck.
It is not due to using plot as the package name as I get the same error when trying to import analysis.
What I can do is to import using: import plot.* or import analyse.* and then go on to use the functions in the packages, but I want to use the namespaces (i.e. not use .*).
Edit
I'm having this problem on both versions I have installed: 2015b and 2016a.
The answer is that, somewhat counterintuitively, you don't need to call import at all. The docs state that
The parent of the top-level package folder must be on the MATLAB path.
Which is what your addpath(pwd) does and then state that (emphasis is mine):
All references to packages, functions, and classes in the package must
use the package name prefix, unless you import the package.
Meaning at this stage you should be able to call
analyse.testFunc
If you were to import analyse.testFunc you would then be able to call testFunc without prefacing it with the namespace but since you want to retain the namespace the answer is to not call import at all.
When I try to use the organize inputs in a Kotlin class, it does not add missing imports like in Java.
Specific case:
create a new Kotlin class file with the following contents:
data class Foo (
public var fileEncoding: String = StandardCharsets.UTF_8.name()
)
Eclipse complains that it can't find StandardCharsets
use organize inputs, but StandardCharsets is not added to the import statements.
I would have expected that it added the line import java.nio.charset.StandardCharsets
Update: since 0.7.0 Kotlin Eclipse plugin supports organize imports.
At present, Kotlin Eclipse plugin does not support "Organize imports" feature: KT-3962. Please feel free to upvote for this issue.
For now, you can try to invoke quick fix action (Ctrl+1) to import StandardCharsets class.
I have a class uses the following lines, it works fine in a Google App Engine project:
import javax.jdo.annotations.IdGeneratorStrategy;
import javax.jdo.annotations.IdentityType;
import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.Persistent;
import javax.jdo.annotations.PrimaryKey;
But when I included this class in another project, it cause error :
package javax.jdo.annotations does not exist
What should I do to find javax.jdo.* ?
Add the JDO jar file to the class path.
The star notation for imports isn't working the way you think it does.
It's not recursive - it only applies the child classes in javax.jdo, not the child packages.
If you want all the classes in javax.jdo.annotations, you'll need to import javax.jdo.annotations.*, too.
I'd recommend not using the star notation. Better to type out the imports for every class individually. Use an IDE to help you. It's clearer for you and other programmers who come after you where those classes came from.