I need to reach my string.xml files from code in a Xamarin.Android project. So, basically I need to use the getString() method of Resources (as I have searched this very site), but there isn't any! Only GetObject<T> is here.
I'm going after it here:
Android.Content.Res.Resources.getString(...).
According to the docs, there is a String GetString (Int32 id) function. You need to get a Resources instance from the application context, using getResources(), then you can call the method.
Related
Is it possible to show the documentation of a function in the documentation of another function residing in a different file? Macros are only valid in their own file.
In the Flutter source code, they use something like this, but it does not seem to have any effect:
/// {#macro flutter.widgets.editableText.keyboardType}
Macro docs is what you are looking for. They are already explained here but in summary allows you do exactly what you want: copy a documentation from a place to somewhere else without re-write.
The best you can do is link to the referenced function.
file_a.dart
/// Also see [functionB].
void functionA() {}
file_b.dart
/// Another function.
void functionB() {}
https://dart.dev/guides/language/language-tour#documentation-comments
I am loading a JSON-LD document using Jena:
Model mj = RDFDataMgr.loadModel([filename]);
The actual content being loaded is here: http://build.fhir.org/account-example.jsonld
Jena goes off and resolves the context, and returns an error (LOADING_REMOTE_CONTEXT_FAILED - lovely suppression of the actual cause in the Jena code :-(). But I need to override the context anyway, and use a different source, because I am doing the build for what will be posted at build.fhir.org, and I need to use my local versions instead. I can't see how to override the context resolution
Alternatively, I could use the loading method documented here: https://github.com/jsonld-java/jsonld-java#code-example - but I have no idea how to get to a Jena graph from there (and I haven't figured out how make the custom resolution work in my Eclipse context either)
How can I get to a Jena graph using a context defined in code somewhere?
I think Jena devs are subscribed to the relevant tag RSS streams. They might weigh in on the clarity of LOADING_REMOTE_CONTEXT_FAILED error. But it seems pretty clear to me.
In order to override the context, you can use read(Model model, String uri, Context context) method. ModelFactory.createDefaultModel() will create a intance of a Model that you can pass as a first argument. See more examples here: https://github.com/apache/jena/tree/master/jena-arq/src-examples/arq/examples/riot
Alternative library is not Jena-compatible (nor RDF4J, which strikes me as rather silly), so there is no easy way to use it with Jena-dependent code.
Finally, you provided the code example for getting a model but now mention a graph – there is a method for that as well: read(Graph graph, String uri, Context context).
I have something like this:
class MyClass
{
static void DoSomething(arg1, arg2){...}
}
Via reflection, I am able to get the ClassMirror of this class. From this point, how would I get to the concrete static function so I can call it.
Note that I tried to use:
ObjectMirror.invoke('DoSomething', [arg1, arg2]);
which would initially appear to work, but it doesn't support passing of complex types as arguments, This static function requires a complex type as one of it's arguments.
Ideally, I'd like to get the 'Function' object that represents the static method so I can invoke it directly.
a. The current state of affairs is temporary. The plan is that the mirror API will wrap the arguments with mirrors for you.
b. The API may eventually support a getProperty method that will give you a Future on the function object. However, you will not get a Function object directly, so this won't really make any difference in this case.
c. The core idea is that the API fundamentally works on mirrors. To make it more usable, it should accept non-mirrors as input and wrap them in mirrors for you. It will always return mirrors, and in some cases return futures on these. This is so the API works the same for remote and local cases.
d. Resources for understanding mirrors:
http://www.bracha.org/mirrors.pdf (academic paper, tough going)
http://www.hpi.uni-potsdam.de/hirschfeld/events/past/media/100105_Bracha_2010_LinguisticReflectionViaMirrors_HPI.mp4 (a video, pre-Dart, discusses earlier Mirror systems)
http://gbracha.blogspot.com/2010/03/through-looking-glass-darkly.html (an old, pre-dart, blog post of mine on mirrors)
http://www.wirfs-brock.com/allen/posts/228 (Allen Wirfs-Brock's blog. Allen was a mirror pioneer back in Smalltalk in the 90s)
http://www.wirfs-brock.com/allen/posts/245
You can also search my blog, or Allen Wirf-Brock's for posts on the topic.
This is similar to the question asked at StructureMap - Override constructor arguments for a named instance, but different in the respect that I don't know the type at coding time and therefore cannot use the generic form of GetInstance().
So while:
ObjectFactory.With(IFoo).GetInstance<IBar>("foobar");
will work, there is apparently no way to call:
ObjectFactory.With(IFoo).GetInstance(typeof(IBar), "foobar");
I have a workaround using a private generic method and the MakeGenericMethod() on that private method's MethodInfo.
As you might imagine, I'm not really happy with that approach, but I cannot see any other way out of the situation.
The method you want is GetNamedInstance(), which is not available when you use the With() method. I'm sure it would not be too hard to add it, maybe you could email Jeremy Miller and see if he can add it in StructureMap 3. Or submit a patch :)
im calling an actionscript class from my main mxml file. the actionscript class is responsible for calling a web service and handling the response, however im having trouble and keep getting the following error; (im new to flex btw)
Error #1009: Cannot access a property or method of a null object reference.
my code goes as follows;
public function getSites(argWsdl:String):void{
ws = new WebService();
ws.loadWSDL(argWsdl);
ws.getSites.addEventListener(ResultEvent.RESULT,echoResultHandler);
ws.getSites();
}
public function echoResultHandler(event:ResultEvent):void {
var siteField:ArrayCollection = event.result as ArrayCollection;
Application.application.setSiteField(siteField);
}
when i run the debugger the code never reaches the result hanlder and i see the #1009 error in the variable list.
any ideas?
looks like you have it sorted, but just to add more information in case someone else comes along to this question, you generally see this error when you are trying to use something that hasn't been created yet. A lot of the time you will see it when trying to access UI components that have not yet been created (its good to rely on the creationComplete event for these sort of things), but in this case it looks like you are using the webservice before it is completely ready (the wsdl hasnt been loaded yet).
Just so you know, you can also define your webservices in mxml (mx:webservice) and specify the wsdl there or you can also load the wsdl later on from a configuration file afterwards just by referencing the ID.
sorted it out,
i needed to created a loadEvent and loadhandler. Once loadWsdl is called the loadhandler specifies the laodHandler to use, inside the loadHandler i call the method name as seen in the wsdl
thanks Ryan,
the main reason im using a seperate actionscript class is so i can reuse the same web service calls across my components without having to retype the same code. I couldnt think of a better way to do this - maybe a could have done the same with a custom component