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Memory management in Qt?
I'm quite new to Qt and am wondering on some basic stuff with memory management and the life of objects. When do I need to delete and/or destroy my objects? Is any of this handled automatically?
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How to center a checkbox in a table cell?
The cell contains nothing but a checkbox. It is rather wide because of text in the table header row. How do I center the checkbox (with inline CSS in my HTML? (I know))
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Clearing localStorage in javascript?
... answered Oct 5 '11 at 21:28
Digital PlaneDigital Plane
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Attempted to read or write protected memory. This is often an indication that other memory is corrup
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I have just faced this issue in VS 2013 .NET 4.5 with a MapInfo DLL. Turns out, the problem was that I changed the Platform for Build from x86 to Any CPU and that was enough to trigger this error. Changing it back to x86 did the trick. Might help someone.
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ValueError: setting an array element with a sequence
...redDuringExSummaryOfMeansArray contains sequences of different lengths.
Edit: Another possible cause for this error message is trying to use a string as an element in an array of type float:
numpy.array([1.2, "abc"], dtype=float)
That is what you are trying according to your edit. If you really...
How to set cornerRadius for only top-left and top-right corner of a UIView?
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Pay attention to the fact that if you have layout constraints attached to it, you must refresh this as follows in your UIView subclass:
override func layoutSubviews() {
super.layoutSubviews()
roundCorners(corners: [.topLeft, .topRight], radius: 3.0)
}
If you don't do that it won't show u...
Math.random() explanation
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int randomWithRange(int min, int max)
{
int range = (max - min) + 1;
return (int)(Math.random() * range) + min;
}
Output of randomWithRange(2, 5) 10 times:
5
2
3
3
2
4
4
4
5
4
The bounds are inclusive, ie [2,5], and min ...
What is the difference between JVM, JDK, JRE & OpenJDK?
... to obtain *.class files that contain the bytecodes understood by the JVM. It's also the entity that allows Java to be a "portable language" (write once, run anywhere). Indeed, there are specific implementations of the JVM for different systems (Windows, Linux, macOS, see the Wikipedia list), the ai...
How to remove extension from string (only real extension!)
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Try this one:
$withoutExt = preg_replace('/\\.[^.\\s]{3,4}$/', '', $filename);
So, this matches a dot followed by three or four characters which are not a dot or a space. The "3 or 4" rule should probably be relaxed, since there are plenty...
How to pass a variable from Activity to Fragment, and pass it back?
...am currently making an android app, and I want to pass a date between activity and fragment.
My activity has a button, which opens the fragment: DatePickerFragment.
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