any() checks absolutely nothing. Since Mockito 2.0, any(T.class) shares isA semantics to mean “any T” or properly “any instance of type T“. This is a change compared to Mockito 1.x, where any(T.class) checked absolutely nothing but saved a cast prior to Java 8: “Any kind object, not necessary of the given class. The class argument … Read more
Difference between CNN and RNN are as follows: CNN: CNN takes a fixed size inputs and generates fixed-size outputs. CNN is a type of feed-forward artificial neural network – are variations of multilayer perceptrons which are designed to use minimal amounts of preprocessing. CNNs use connectivity pattern between its neurons and is inspired by the … Read more
Imagine you want to use zlib in your project, you need to find the header file zlib.h, and the library libz.so (on Linux). You can use the low-level cmake commands find_path and find_library to find them, or you can use find_package(ZLIB). The later command will try to find out all what is necessary to use … Read more
OpenMP is a way to program on shared memory devices. This means that the parallelism occurs where every parallel thread has access to all of your data. You can think of it as: parallelism can happen during execution of a specific for loop by splitting up the loop among the different threads. MPI is a … Read more
DateTimeUtils obj = new DateTimeUtils(); SimpleDateFormat simpleDateFormat = new SimpleDateFormat(“dd/M/yyyy hh:mm:ss”); try { Date date1 = simpleDateFormat.parse(“10/10/2013 11:30:10”); Date date2 = simpleDateFormat.parse(“13/10/2013 20:35:55”); obj.printDifference(date1, date2); } catch (ParseException e) { e.printStackTrace(); } //1 minute = 60 seconds //1 hour = 60 x 60 = 3600 //1 day = 3600 x 24 = 86400 public void … Read more
Java started initially by offering the File class, in the java.io package to access file systems. This object represents a file/directory and did allow you to perform some operations such as checking if a file/directory exists, get properties and delete it. It had, though, some shortcomings. To name a few: The File class lacked some … Read more
Those are two completely different things: An Activity is an application component that provides a screen, with which users can interact in order to do something. More details: https://developer.android.com/guide/components/activities/intro-activities Whereas a Fragment represents a behavior or a portion of user interface in an Activity. https://developer.android.com/guide/fragments
You can use the difference method provide by DateTime class //the birthday’s date final birthday = DateTime(1967, 10, 12); final date2 = DateTime.now(); final difference = date2.difference(birthday).inDays; UPDATE Since many of you reported there is a bug with this solution and to avoid more mistakes, I’ll add here the correct solution made by @MarcG, all … Read more
size includes NaN values, count does not: In [46]: df = pd.DataFrame({‘a’:[0,0,1,2,2,2], ‘b’:[1,2,3,4,np.NaN,4], ‘c’:np.random.randn(6)}) df Out[46]: a b c 0 0 1 1.067627 1 0 2 0.554691 2 1 3 0.458084 3 2 4 0.426635 4 2 NaN -2.238091 5 2 4 1.256943 In [48]: print(df.groupby([‘a’])[‘b’].count()) print(df.groupby([‘a’])[‘b’].size()) a 0 2 1 1 2 2 Name: … Read more
If I don’t require user interaction I would use a toast? You can still use Snackbar. It is not mandatory to have an action with Snackbar. What is meant by “system messaging”? Does that apply to displaying information when something important happened between my app and the Android system? I believe this means that Toasts … Read more