call

问题 I have a chain call like so: $object->getUser()->getName(); I know that I can use a string to call a function on an object: $functionName = 'getUser'; $object->$functionName() or call_user_func(array($object, functionName)) I was wondering if it was possible to do the same for a chain call? I tried to do: $functionName = 'getUser()->getName'; $object->functionName(); But I get an error Method name must be a string I guess this is because the () and -> cannot be interpreted since they are part

问题 I am trying to call a URL in android using HttpClient mClient= new DefaultHttpClient() HttpGet get = new HttpGet("www.google.com "); mClient.execute(get); HttpResponse res = mClient.execute(get); But, I did not get any response. How can I call URL in Android? 回答1: This is a complete example: DefaultHttpClient httpclient = new DefaultHttpClient(); HttpGet httpget = new HttpGet(yourURL); HttpResponse response = httpclient.execute(httpget); in = new BufferedReader(new InputStreamReader(response

问题 I have an C++ dll which defines a struct and an dll call like this: typedef const char* FString; typedef struct { FString version; FString build_no; FString build_type; FString build_date; FString build_info; FString comment; } FVersionInfo; extern "C" FAPI_EXPORT FVersionInfo CALLINGCONV fGetVersion(void); On the c# side i using an dynamic loading: [DllImport("kernel32.dll", EntryPoint = "LoadLibrary")] static extern int LoadLibrary( [MarshalAs(UnmanagedType.LPStr)] string lpLibFileName);

问题 I am wondering about the possibility of making a phone call from android through a selected SIM on a dual SIM android devices. Is it possible to select a particular SIM to call through programmatically? 回答1: The Android SDK doesn't provide an APIs to control the SIM being used on dual SIM mobiles. In fact, Android doesn't even really support dual SIM phones. All dual SIM devices are modified extensively by the manufacturers. You cannot control the SIM through the Android SDK. If any OEM

问题 I am wondering about the possibility of making a phone call from android through a selected SIM on a dual SIM android devices. Is it possible to select a particular SIM to call through programmatically? 回答1: The Android SDK doesn't provide an APIs to control the SIM being used on dual SIM mobiles. In fact, Android doesn't even really support dual SIM phones. All dual SIM devices are modified extensively by the manufacturers. You cannot control the SIM through the Android SDK. If any OEM

问题 I am having real trouble tracking down a bug and it would help be a lot to know which method called a certain method. Is there an easy way to get a call hierarchy from java? Java is a small part of the app so I cannot compile and run the whole app in eclipse/net beans so I don't have access to an IDE debugger's call hierarchy. 回答1: Thread.currentThread().getStackTrace(); or Exception ex = new Exception(); ex.printStackTrace(); It's fairly slow, but fine for debugging purposes. API docs here.

问题 A Java method call may be parameterized like in the following code: class Test { <T> void test() { } public static void main(String[] args) { new Test().<Object>test(); // ^^^^^^^^ } } I found out this is possible from the Eclipse Java Formatter settings dialog and wondered if there are any cases where this is useful or required. EDIT Based on Arne's excellent answer i came up with the following conclusion: In addition to improved type safety as Arne's example illustrates a parameterized

问题 I have a bit of logic that needs to be tested such as: { ... A.add("1"); ... A.add("what ever"); ... A.add("2"); A.delete("5"); ... } I have already mocked A in my test and I can test the add method is called once on argument ("2") such as: Mockito.verify(mockedA).add("2"); My question is how can I test if I can verify the last call on method add is add("2") instead of other arguments. Since the test above can't catch if somebody by accident adds another call such as add("3") in the last.

问题 This is mostly to make sure my methodology is correct, but my basic question was is it worth it to check outside of a function if I need to access the function at all. I know, I know, premature optimization, but in many cases, its the difference between putting an if statement inside the function call to determine whether I need to run the rest of the code, or putting it before the function call. In other words, it takes no effort to do it one way or the other. Right now, all the checks are

问题 I have a protected function that is defined within a certain class. I want to be able to call this protected function outside of the class within another function. Is this possible and if so how may I achieve it class cExample{ protected function funExample(){ //functional code goes here return $someVar }//end of function }//end of class function outsideFunction(){ //Calls funExample(); } 回答1: That's the point of OOP - encapsulation: Private Only can be used inside the class. Not inherited by