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How to use QueryPerformanceCounter?
I recently decided that I needed to change from using milliseconds to microseconds for my Timer class, and after some research I've decided that QueryPerformanceCounter is probably my safest bet. (The warning on Boost::Posix that it may not works on Win32 API put me off a bit). However, I'm not re...
How to detect modifier key states in WPF?
...o access whether the Control, Shift, Alt buttons are down? For instance inside MouseDown event of a TreeView .
6 Answers...
Git merge errors
...a merge failed, and that there are conflicts in those files. If you've decided that whatever merge you were trying to do was a bad idea after all, you can put things back to normal with:
git reset --merge
However, otherwise you should resolve those merge conflicts, as described in the git manual...
Is Meyers' implementation of the Singleton pattern thread safe?
...er automatically initialize the CRITICAL_SECTION before main() is called. Ideally a true RAII critical section class would be used that can deal with exceptions that might occur when the critical section is held, but that's beyond the scope of this answer.
The fundamental operation is that when an...
Converting dict to OrderedDict
...pberry Pi. I am trying to print two dictionaries in order for comparison (side-by-side) for a text-adventure. The order is essential to compare accurately.
No matter what I try the dictionaries print in their usual unordered way.
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Filtering a list of strings based on contents
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@S.Lott: I think lambdas are facilitating the consideration of functions as first-class objects, which is important for some programming paradigms. I wouldn't say they're very important to me, but I believe even newbies can benefit from thinking about programming this way, a...
How to change the playing speed of videos in HTML5?
How to change the video play speed in HTML5? I've checked video tag's attributes in w3school but couldn't approach that.Any help would be appreciated!
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postgresql - add boolean column to table set default
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The actual rules are that keywords and unquoted identifiers are not case sensitive so BOOLEAN is allowed thought internally postgresql will use boolean. I tend to write standard types and SQL keywords in uppercase, I do use lowercase for all my own identifiers.
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instanceof Vs getClass( )
... things.
instanceof tests whether the object reference on the left-hand side (LHS) is an instance of the type on the right-hand side (RHS) or some subtype.
getClass() == ... tests whether the types are identical.
So the recommendation is to ignore the performance issue and use the alternative th...
When to use valueChangeListener or f:ajax listener?
... it would by default executed during the HTML DOM change event already. Inside UICommand components and input components representing a checkbox or radiobutton, it would be by default executed during the HTML DOM click event only.
<h:selectOneMenu value="#{bean.value}">
<f:selectItems ...