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When should I use C++ private inheritance?
...ritance to seal a class (in .NET terminology) or to make a class final (in Java terminology). This is not a common use, but anyway I found it interesting:
class ClassSealer {
private:
friend class Sealed;
ClassSealer() {}
};
class Sealed : private virtual ClassSealer
{
// ...
};
class Fai...
What is the IntelliJ shortcut key to create a javadoc comment?
In Eclipse, I can press Alt + Shift + J and get a javadoc comment automatically generated with fields, returns, or whatever would be applicable for that specific javadoc comment. I'm assuming that IntelliJ IDEA has this feature. Can anyone tell me if there is a keyboard shortcut for this?
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Android: How to Programmatically set the size of a Layout
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Java
This should work:
// Gets linearlayout
LinearLayout layout = findViewById(R.id.numberPadLayout);
// Gets the layout params that will allow you to resize the layout
LayoutParams params = layout.getLayoutParams();
// Cha...
What is Dispatcher Servlet in Spring?
...p in the request’s travels is at Spring’s DispatcherServlet. Like most Java- based web frameworks, Spring MVC funnels requests through a single front controller servlet. A front controller is a common web application pattern where a single servlet delegates responsibility for a request to other ...
How can I enable or disable the GPS programmatically on Android?
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java.lang.SecurityException: Permission Denial: not allowed to send broadcast android.location.GPS_ENABLED_CHANGE
– Abhi
Apr 15 '16 at 13:57
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When should you use 'friend' in C++?
...inters to functions or functions as first class objects) is allowed in C#, Java, Python and many others.
– André Caron
Oct 21 '10 at 18:32
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String vs. StringBuilder
...would be faster using strings and the plus operator. This is because (like Java, as Eric points out), it internally uses StringBuilder automatically (Actually, it uses a primitive that StringBuilder also uses)
However, if what you are doing is closer to:
string a,b,c,d;
a = a + b;
a = a + c;
a ...
Why does Python code use len() function instead of a length method?
...nd OOP", but I'd end with "especially in Python", not even. Python (unlike Java, Ruby, or Smalltalk) doesn't try to be a "pure OOP" language; it's explicitly designed to be a "multi-paradigm" language. List comprehensions aren't methods on iterables. zip is a top-level function, not a zip_with metho...
Ruby class types and case statements
...means that saying MyClass in Ruby is equivalent to saying MyClass.class in Java.
obj.class is an object of type Class describing the class of obj. If obj.class is MyClass, then obj was created using MyClass.new (roughly speaking). MyClass is an object of type Class that describes any object created...
Android - Handle “Enter” in an EditText
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When I upgraded Java, my Android tool-chain broke. It was 32-bit. I re-installed everything 64-bit and discovered that there are many more public emulator versions available now. I must admit that I only know that the behavior of the EditorA...