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Finding the type of an object in C++
... a bad_cast exception.
Make sure there is at least one virtual function in Base class to make dynamic_cast work.
Wikipedia topic Run-time type information
RTTI is available only for classes that are polymorphic, which means
they have at least one virtual method. In practice, this is not a
limitatio...
LINQ to Entities only supports casting EDM primitive or enumeration types with IEntity interface
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Perfect, it's great being able to perform Interface-based queries and still maintain the collection as IQueryable. A bit annoying however that there is basically no way of thinking up this fix, without knowing the inner workings of EF.
– Anders
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Creating a new column based on if-elif-else condition
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Having links relative to root?
....html" will link to the page www.example.com/vegetables/carrots.html.
The base tag element allows you to specify the base-uri for that page (though the base tag would have to be added to every page in which it was necessary for to use a specific base, for this I'll simply cite the W3's example:
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How to set the authorization header using curl
...ion used in HTTP (which is the type curl uses by
default) is plain text based, which means it sends username and password
only slightly obfuscated, but still fully readable by anyone that sniffs on
the network between you and the remote server.
To tell curl to use a user and password f...
Select mySQL based only on month and year
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Suppose you have a database field created_at Where you take value from timestamp.
You want to search by Year & Month from created_at date.
YEAR(date(created_at))=2019 AND MONTH(date(created_at))=2
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Overloading and overriding
...st
{
public override void getStuff(int id)
{
//base.getStuff(id);
//or - Get stuff new location
}
}
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What is the difference between Digest and Basic Authentication?
...d and the requested URI.
Whereas Basic Authentication uses non-encrypted base64 encoding.
Therefore, Basic Authentication should generally only be used where transport layer security is provided such as https.
See RFC-2617 for all the gory details.
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How does Python's super() work with multiple inheritance?
...d Python will raise an error:
TypeError: Error when calling the metaclass bases
Cannot create a consistent method resolution order (MRO) for bases Second, First
Edit: I see several people arguing that the examples above lack super() calls, so let me explain: The point of the examples is to sh...
How to change the Push and Pop animations in a navigation based app
I have a navigation based application and I want to change the animation of the push and pop animations. How would I do that?
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