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How do I use valgrind to find memory leaks?
... others, so look for one that looks a good culprit and apply some of these ideas:
List out the functions in your code that depend on/are dependent on the
"offending" code that has the memory error. Follow the program's execution
(maybe even in gdb perhaps), and look for precondition/postconditio...
Batch script: how to check for admin rights
...list of applications in the C:\Windows\System32 folder, trying to get some ideas. After trials and errors, this is the dirty (pun intended) approach I've come up with:
fsutil dirty query %systemdrive% >nul
The fsutil dirty command requires admin rights to run, and will fail otherwise. %systemd...
OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection
...thinning is being used, I don't care from where he took several thresholds idea -- it is just not used here (thus how can it not be a difference ?), the image is resized here, the component measurements are different. "Some dilation-erosion" doesn't give binary edges, otsu is used for that. It is po...
Database design for audit logging
... fields that were edited that you then have to mash up to give the user an idea of what the old record looked like.
So for example, if you had a table called Opportunities to track sales deals, you would actually create two separate tables:
Opportunities
Opportunities_Content (or something like th...
Difference between array_map, array_walk and array_filter
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The idea of mapping an function to array of data comes from functional programming. You shouldn't think about array_map as a foreach loop that calls a function on each element of the array (even though that's how it's implemented...
Should a Netflix or Twitter-style web service use REST or SOAP? [closed]
...A totally agree about the question above...terrible question, and about as ideal an example of "subjective and argumentative" as it gets, and certainly couldn't have been more absurd. :P I would make one distinction about SOAP however...I think it fits the bill of "swiss army knife" much better than...
In Java, when should I create a checked exception, and when should it be a runtime exception? [dupli
...even Errors).
Additionally, checked exceptions break encapsulation.
This idea that checked exceptions should be used for "recoverable" errors is really pie-in-the-sky wishful thinking.
Checked exceptions in Java were an experiment... a failed experiment. We should just cut our losses, admit we m...
Choice between vector::resize() and vector::reserve()
...i); } is pretty robust as far as reserving the space is concerned. I've no idea how many elements will actually be added, but I have an upper bound. Of course when in doubt, with vectors you can just use indexes instead of iterators, the difference is usually negligible.
– Stev...
How to make an Android Spinner with initial text “Select One”?
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@emmby Do you have any idea how to clear the selection after the user set it? I tried refactoring the two invoke() calls into a clearSelection() method, but it doesn't really work. Although the popup list shows the formerly-selected item as unselec...
How to get StackPanel's children to fill maximum space downward?
...wport size, you should be able to bind this to the ScrollViewer’s size. Ideally you would implement IScrollInfo, but that starts to get complicated if you are going to implement all of it properly.
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