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In C++, what is a virtual base class?
I want to know what a " virtual base class " is and what it means.
11 Answers
11
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C# Error: Parent does not contain a constructor that takes 0 arguments
...ct the situation, you need to add an explicit call:
public Child(int i) : base(i)
{
Console.WriteLine("child");
}
Or, you can just add a parameterless parent constructor:
protected Parent() { }
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Compare object instances for equality by their attributes
...le objects, and then compare results
from collections.abc import Iterable
BASE_TYPES = [str, int, float, bool, type(None)]
def base_typed(obj):
"""Recursive reflection method to convert any object property into a comparable form.
"""
T = type(obj)
from_numpy = T.__module__ == 'num...
How can I know if a branch has been already merged into master?
...
You can use the git merge-base command to find the latest common commit between the two branches. If that commit is the same as your branch head, then the branch has been completely merged.
Note that git branch -d does this sort of thing already b...
What is the difference between lemmatization vs stemming?
...nal forms and sometimes derivationally related forms of a word to a common base form.
However, the two words differ in their flavor. Stemming usually refers to a crude heuristic process that chops off the ends of words in the hope of achieving this goal correctly most of the time, and often includes...
What does “S3 methods” mean in R?
...ed. There are quite a few disadvantages to this way of dispatching methods based upon an attribute (class) of objects (and C purists probably lie awake at night in horror of it), but for a lot of situations, it works decently. With the current version of R, newer ways have been implemented (S4 and r...
Is it possible to make an ASP.NET MVC route based on a subdomain?
...a very simple example of a custom Route:
public class ExampleRoute : RouteBase
{
public override RouteData GetRouteData(HttpContextBase httpContext)
{
var url = httpContext.Request.Headers["HOST"];
var index = url.IndexOf(".");
if (index < 0)
return ...
Accessing member of base class
...keyword in order to avoid confusion between a specialised function and the base class function. For example, if you called move() or this.move() you would be dealing with the specialised Snake or Horse function, so using super.move() explicitly calls the base class function.
There is no confusion o...
URL-parameters and logic in Django class-based views (TemplateView)
It is unclear to me how it is best to access URL-parameters in class-based-views in Django 1.5.
5 Answers
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How to use an existing database with an Android application [duplicate]
I have already created an SQLite database. I want to use this database file with my Android project. I want to bundle this database with my application.
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