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'User' in 'User-defined classes'


'User' in 'User-defined classes'

By : Mohammed Al Qassem
Date : November 19 2020, 01:01 AM
This might help you It means the classes which is created by user (developer or you) is User-defined classes. For example you create one class with "test.m", then "test.m" is user defined class.
NSString, NSNumber, NSMutableArray are not user defined classes because it is provided by system.
code :


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In a large Application is there any way to distinguish user-defined classes with built-in classes?

In a large Application is there any way to distinguish user-defined classes with built-in classes?


By : KellTainer
Date : March 29 2020, 07:55 AM
wish of those help You haven't specified which platform you're talking about, but in both Java and .NET, you're recommended to use the organisation name in the namespace, e.g. Microsoft.CSharp.* or com.google.base.*. That means if you know the full name of the class, it should be fairly obvious where it comes from... and an IDE will generally show you the full name of the class (including the namespace) if you hover over the brief name in code.
If this doesn't help, please clarify the question.
Ownership of memory in user-defined classes deriving from Qt classes

Ownership of memory in user-defined classes deriving from Qt classes


By : Ali Mohammadi
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further No you don't, QObject handles that. Everything derived will be collected as long as it is in a parent-children tree. QWidget inherits QObject and you inherit QWidget. So you are all set.
Note that there are still many Qt types which do not inherit QObject. Better look at the doc to be sure.
Identifying between PHP Internal Classes and User-defined Classes

Identifying between PHP Internal Classes and User-defined Classes


By : 陳冠廷
Date : March 29 2020, 07:55 AM
will help you Take a look at the reflection API. Manual
code :
<?php
$d = new DateTime();
$r = new ReflectionClass($d);
echo ($r->isInternal());
C#,can Extension methods be added to user defined classes in C#(not base classes)

C#,can Extension methods be added to user defined classes in C#(not base classes)


By : wirefram
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I have a user defined class , Here is one way to write one:
Wrapper Classes vs Classes(user-defined)

Wrapper Classes vs Classes(user-defined)


By : Mustaan siddiqi
Date : March 29 2020, 07:55 AM
Hope this helps When you do System.out.println(obj) , it prints the result of obj.toString() method, if your custom class does not override toString() , it uses the toString() method from parent class which has toString() method overriden (In your case, that parent class is Object , as that is the default parent class for all classes unless another class is explicitly specified as the parent using extends keyword) , which is what returns the following as per documentation -
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