Any better solution? Taking your question literally, no. There is no better solution. This will create a default constructed, and therefore empty std::map<int,int>. std::map<int,int> m; solved How to create an empty std::map object? [closed]
There is unlikely to be an objective answer to this, as both the K&R and 1TBS styles emerged in the context of the C programming language, where there were no class definitions. Since derivative languages of C that support classes (e.g., C++, Java, etc.) share most of the syntax, it is only natural that the … Read more
You selector is wrong . var adElem = $(‘.ad.spf-nolink’).removeClass(‘ClassName’); . class-selector # id-selector .removeClass() solved JQuery remove div class [duplicate]
First, I do not really know which is the default OUTER JOIN in T-SQL (I’d bet FULL), but in any case, I think it is unclear – it is best to use LEFT, RIGHT, OR FULL JOIN explicitly when you need one. JOIN joins tables. Already existent ones or subqueries. APPLY applies (duh) a table-valued … Read more
You can’t override operators for pre-existing classes. The closest you can get is to make an extension method: public static bool EqualsCaseInsensitive(this String a, String b) { return String.Equals(a, b, StringComparison.OrdinalIgnoreCase); } You can use it like so: var areSame = stringA.EqualsCaseInsensitive(stringB); That being said, it’s considered bad practice to add extension methods to core … Read more
The =-symbol allocates the value of the arithmetic expression on it’s right to the variable on it’s left It assigns the result. Allocation is something different, and it’ll be important to remember the difference later (dynamic allocation in particular will be really confusing if you conflate it with assignment). But if i have an expression … Read more
If you use Python3 then input(question) returns string ‘1’, ‘2’, etc. You have to convert it into number int(input(question)). 6 solved Python Type Error Unsupported Operand [duplicate]
Yes, it will. Although it is going through an upcast, you will find that for the upcasted (Mammal) instance, the following condition still holds: (myMammal is Horse) == true But actually doing this is an anti-pattern. Go for an architecture using interfaces instead. solved What class does this variable belong to?
You did char * response. This makes a pointer variable to a character. Right now it is not pointing to any memory(it is some garbage value). scanf stores user input in consecutive memory addresses starting from the one pointed by response. as response is uninitialised, the input may not necessarily be stored on the stack(Don’t … Read more
You can start from this code, first read the file, second split the file since data is on different row, then store the result on array: using (StreamReader sr = new StreamReader(@”C:\Folder\Book1.csv”)) { string strResult = sr.ReadToEnd(); string[] result = strResult.Split(new string[] { Environment.NewLine }, StringSplitOptions.None); } 1 solved C# How do I convert a … Read more
Please read your error messages more carefully. You have an autowiring problem: NoSuchBeanDefinitionException: No qualifying bean of type **’com.mthree.service.UserService’** available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} You should add an annotation to tell Spring that your bean is under its control: @Service(value = “userService”) public class UserServiceImpl implements … Read more
You could define a filter function that checks if there is one HTML tag with a attribute value equal to value: def your_filter(tag, value): for key in tag.attrs.keys(): if tag[key] == value: return True return False # alternatively as one liner: def your_filter(tag, value): return any(tag[key] == value for key in tag.attrs.keys()) Then, you could … Read more
You’re getting an ArrayIndexOutOfBoundsException because you’re accessing the command line arguments without checking that there actually are any. You need to check whether the user provided the proper arguments, and if not, print a message how to call the executable as below public class Assignment1 { public static void main(String args[]) { if (args.length == … Read more
in your layout XML file <ProgressBar android:id=”@+id/progress_bar” android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:indeterminate=”true” android:padding=”@dimen/padding15″ android:visibility=”visible” /> Then in your Activity or Fragment’s code ProgressBar mProgressBar=(ProgressBar)findViewById(R.id.progress_bar); then you can set it’s visibility property to be invisible or visible: mProgressBar.setVisibility(View.VISIBLE); or mProgressBar.setVisibility(View.GONE); or mProgressBar.setVisibility(View.INVISIBLE); solved How to make a Progress Bar [closed]
You need to add the JButton to mainPanel instead of panel. Some duplicated lines and not necessary settings removed for (int i = 0; i < 64; i++) { label[i] = new JButton(); label[i].setBorderPainted(false); mainPanel.add(label[i]); label[i].setIcon(new ImageIcon(getClass() .getResource(“/org/me/images/O.png”))); label[i].setPreferredSize(new Dimension(50, 50)); label[i].setToolTipText(“label” + i); } 0 solved How do I get rid of the gaps … Read more