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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
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Get a specific bit from byte
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Easy. Use a bitwise AND to compare your number with the value 2^bitNumber, which can be cheaply calculated by bit-shifting.
//your black magic
var bit = (b & (1 << bitNumber-1)) != 0;
EDIT: To add a little more detail because there ...
Using FileSystemWatcher to monitor a directory
I am using a Windows Forms Application to monitor a directory and move the files dropped in it to another directory.
3 Answ...
What does ^M character mean in Vim?
I keep getting ^M character in my vimrc and it breaks my configuration.
15 Answers
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CryptographicException 'Keyset does not exist', but only through WCF
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+1 for the MSDN documentation and the steps listed applies even to a Web Application
– Naren
Apr 18 '18 at 16:05
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Android Whatsapp/Chat Examples [closed]
Does anybody have an example or a tutorial for a Android application like WhatsApp ? I want to understand how WhatsApp works and how it is programmed.
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Tablix: Repeat header rows on each page not working - Report Builder 3.0
...porting Services does not recognize which textboxes are the column headers and setting RepeatColumnHeaders property to True doesn't work.
Instead, you need to:
Open Advanced Mode in the Groupings pane. (Click the arrow to the right of the Column Groups and select Advanced Mode.)
In the Row Gr...
Regular expression to match balanced parentheses
...ia well suited to regular expressions are also in play. 3) Often you are handing a regular expression into some API that only accepts regular expressions and you have no choice.
– Kenneth Baltrinic
May 2 '14 at 3:31
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Factory pattern in C#: How to ensure an object instance can only be created by a factory class?
... method of a factory class. Let us say I have some "business object" class and I want to make sure any instance of this class will have a valid internal state. In order to achieve this I will need to perform some check before creating an object, probably in its constructor. This is all okay until I ...
Accessing JPEG EXIF rotation data in JavaScript on the client side
... The trick is that all this should happen in the browser, using JavaScript and <canvas> .
8 Answers
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