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How to properly check if std::function is empty in C++11?
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Open the start page in Visual Studio after closing a project?
...
In VS2013 by default I do not see the "Start Page" command in the View menu but adding it was simple. The icon also looks different in VS2013.
Right click on the toolbar and choose Customize... at the bottom then go to Commands
Sw...
Difference between virtual and abstract methods [duplicate]
...hod(int i)
{
// Default implementation which can be overridden by subclasses.
}
}
public class D : E
{
public override void AbstractMethod(int i)
{
// You HAVE to override this method
}
public override void VirtualMethod(int i)
{
// You are allowe...
Accessing an array out of bounds gives no error, why?
...bestest friend: Undefined Behavior.
There is a lot that is not specified by the language standard, for a variety of reasons. This is one of them.
In general, whenever you encounter undefined behavior, anything might happen. The application may crash, it may freeze, it may eject your CD-ROM drive ...
Python truncate a long string
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First the whitespace in text is collapsed (all whitespace is replaced
by single spaces). If the result fits in the width, it is returned.
Otherwise, enough words are dropped from the end so that the remaining
words plus the placeholder fit within width:
>>> textwrap.shorten("Hello...
Variable's scope in a switch case [duplicate]
...s to it because java writer has made this not correct.
e.g. if statement by default take first line in its scope than what's wrong with cases where the end of case is explicitly closed by break statement. Hence the declaration in case 1: should not be available in case 2 and it has parallel scope ...
How to configure Fiddler to listen to localhost?
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By simply adding fiddler to the url
http://localhost.fiddler:8081/
Traffic is routed through fiddler and therefore being displayed on fiddler.
sha...
How to secure RESTful web services?
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ADB Shell Input Events
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By adb shell input keyevent, either an event_code or a string will be sent to the device.
usage: input [text|keyevent]
input text <string>
input keyevent <event_code>
Some possible values for event_code are...
Python: Is it bad form to raise exceptions within __init__?
...ed to returning error codes, is that error codes usually can't be returned by constructors. So at least in languages like C++, raising exceptions is the only way to signal errors.
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