class foo; in header file
- by Thomas
Hi,
Is some one able to explain why header files have something like this?
class foo; // This here?
class bar
{
bar();
};
Do you need an include statement when using this?
Thanks.
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Search found 50247 results on 2010 pages for 'base class'.
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python return class
- by William P
Hi I new to python and I read from someone else of the example code below: class A: def current(self): data = Data(a=a,b=b,c=c) return data class B(A): #something here #print data a b c How do I print out the data a, b, and c?Read the article
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Java Enum List from Class
- by DD
How do I go from a Class object to a list of enums generically? i.e. public static <T extends Enum> List<T> getList(Class<T> clazz) I cant find a way to get to the values() methodRead the article
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parameter extends a class
- by coubeatczech
Hello, I want to do a class thats accepts anything ordered and prints greater. (I'm just learning so I know it's a bit useless) class PrinterOfGreater[T extends Ordered](val a:T, val b:T){println(a > b)} I know that it can't be written by this style in scala, but I don't know how to write it properly... Do anybody know?Read the article
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Can't see how to compile a header file with /clr switch in a mixed class
- by MattN
When creating a mixed mode class, on compilation the header file complains that it needs to be complied with the /clr switch as it is a mixed mode class, however, I can't see any option to specifically compile that header with /clr from visual studio, and I don't want to set the entire project with a /clr flag, Does anyone know how I can specify that this header file is compiled correctly with /clr? Thanks in advance!Read the article
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Styling a Div Class within Div ID
- by HollerTrain
I have a page that has the following div structure: <div id="name" class="class_name"> How would I style the class? Like this? #name .class_name name .class_name #name class_name ?Read the article
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row specific class
- by stimpie
How do I create a Zend_Db_Table which returns a different class for each row.? Example UserTable has id,name and type Type contains class names (admin,client,etc...) The classes admin, client are all subclasses of user If I call fetch I need to get a admin or client object depending on the corresponding value in the db.Read the article
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Opening a File Dialog from within a class module in vb6
- by ajax
I want to know how can we open a file dialog from withing a class module in vb6. I know how to do in forms, but I have to open it from within a class module.Read the article
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Declaring variable as PHP class
- by iamdadude
I have a variable called $theclass and it's a string "Home_class". How can I define a class out of that string? The reason I need to do this is that the variable will change and I want to be able to declare the class that the variable is equal to. Is this possible? Thanks for any help.Read the article
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real time scenario between interface/abstract class ?
- by JavaUser
Hi , Please give me a real time simple example for the below questions : Where to use interface rather abstract class Where to use abstract class rather interface I need code snippet for both . Which takes low memory and which performs well . Do I need to consider the design aspect also? What is the conceptual difference not the syntactical difference .Read the article
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Class method differences in Python: bound, unbound and static
- by Franck Mesirard
What is the difference between the following class methods? Is it that one is static and the other is not? Class Test(Object): def method_one(self): print "Called method_one" def method_two(): print "Called method_two" a_test = Test() a_test.method_one() a_test.method_two()Read the article
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Scaffold is ignoring class file in CakePHP
- by JoseMarmolejos
Hi, when using scaffolding on a controller the views render fine and the app even attempts to insert the data; the problem is that the scaffold is completely ignoring the relations I'm defining in my model class, in fact it's ignoring the class entirely as I can delete the file and the controller still scaffolds and render the crud from the table. Has this ever happened to you?Read the article
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Casting of object for a class loaded at runtime
- by Steven
hi, i load a class using Class.forName(klassname,false,loader) After this i create an instance using klass.newInstance(); It returns an object type.I want to cast it to specific type(ie.Klassnamw instance).I used normal casting but it gets hung because it is not resolved during runtime.How can i cast it?HellpRead the article
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Using a C++ class inside Javascript without an .idl
- by Fábio
It is possible to call methods on a class whose interface is not exposed through an .idl file? Im my particular case I'd like to use the @mozilla.org/gfx/fontmetrics;1 class, whose interface nsIFontMetrics doesn't have a correspondent .idl file.Read the article
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Adding a class attribute on the Image tag generated by the hyperlink control
- by iHeartDucks
I have a hyper link control and I set the NavigateURL and the ImageURL property at runtime. I also need to set the class of the image tag that it generates but I cannot figure out how I can do that. The solution mentioned here http://stackoverflow.com/questions/1428879/apply-css-class-to-image-in-asphyperlink does not work because the image url is hard coded. any ideas?Read the article
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Getting value of public static final field/property of a class in Java via reflection
- by Viet
Say I have a class: public class R { public static final int _1st = 0x334455; } How can I get the value of the field/property "_1st" via reflection?Read the article
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Java "this" and inner class
- by llm
Is it possible to get a reference to this from within a Java inner class? i.e. Class outer { void aMethod() { NewClass newClass = new NewClass() { void bMethod() { // How to I get access to "this" (pointing to outer) from here? } }; } }Read the article
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Class constructor in java
- by aladine
Please advise me the difference between two ways of declaration of java constructor public class A{ private static A instance = new A(); public static A getInstance() { return instance; } public static void main(String[] args) { A a= A.getInstance(); } } AND public class B{ public B(){}; public static void main(String[] args) { B b= new B(); } } ThanksRead the article
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Android: R$id class not loaded?
- by llappall
Hi, I have a Android class extending Application to generate some global classes, etc. It works, in that I can, for example, get the context, etc. BUT, when I try this: row = (TextView) findViewById(R.id.list_row_text); I get R.id.list_row_text = Class not loaded : <mypackage>.R$id Any ideas why this is happening? Thanks GerardoRead the article
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How can I list all classes loaded in a specific class loader
- by Yaneeve
For debug reasons, and curiosity, I wish to list all classes loaded to a specific class loader. Seeing as most methods of a class loader are protected, what is the best way to accomplish what I want? Thanks!Read the article
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implementing java interface with scala class - type issue
- by paintcan
Why on earth won't this compile? Scala 2.8.0RC3: Java public interface X { void logClick(long ts, int cId, String s, double c); } Scala class Y extends X { def logClick(ts: Long, cId: Int,sid: java.lang.String,c: Double) : Unit = { ... } } Error class Y needs to be abstract, since method logClick in trait X of type (ts: Long,cId: Int,s: java.lang.String,c: Double)Unit is not definedRead the article
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Log4net: seperate log files for each class
- by Mohsan
hi.. i want to log messages from multiple classes. the problem is that currently i can log all messages into single file.i want to do this class A should log its messages into ALog.txt and class B should log its messages into BLog.txt please tell me the sample config file for these settingsRead the article
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Difference between struct and class?
- by kam
Hi, Struct has default access specifier is public where as class has default access specifier is private. So why can't use struct if change default access specifier as private? why class? Thanks, kamRead the article
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Pickling a class definition
- by Giorgio
Is there a way to pickle a class definition? What I'd like to do is pickle the definition (which may created dynamically), and then send it over a TCP connection so that an instance can be created on the other end. I understand that there may be dependencies, like modules and global variables that the class relies on. I'd like to bundle these in the pickling process as well, but I'm not concerned about automatically detecting the dependencies because it's okay if the onus is on the user to specify them.Read the article
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Get default value of class member ( C# )
- by Ruben Aster
Let's assume I have a class ClassWithMember class ClassWithMember { int myIntMember = 10; } How do I get the default value 10 of the myIntMember member by System.Type? I'm currently struggling around with reflections by all I retreive is the default value of int (0) not the classes default member (10)..Read the article
