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Pure virtual function with implementation
My basic understanding is that there is no implementation for a pure virtual function, however, I was told there might be implementation for pure virtual function.
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How do I check if a number evaluates to infinity?
...inite returns false if your number is POSITIVE_INFINITY, NEGATIVE_INFINITY or NaN.
if (isFinite(result))
{
// ...
}
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How to limit the maximum value of a numeric field in a Django model?
Django has various numeric fields available for use in models, e.g. DecimalField and PositiveIntegerField . Although the former can be restricted to the number of decimal places stored and the overall number of characters stored, is there any way to restrict it to storing only numbers within a ...
Difference between wait() and sleep()
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A wait can be "woken up" by another thread calling notify on the monitor which is being waited on whereas a sleep cannot. Also a wait (and notify) must happen in a block synchronized on the monitor object whereas sleep does not:
Object mon = ...;
synchronized (mon) {
mon.wait();
}
At th...
Sequence contains more than one element
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The problem is that you are using SingleOrDefault. This method will only succeed when the collections contains exactly 0 or 1 element. I believe you are looking for FirstOrDefault which will succeed no matter how many elements are in the collection.
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object==null or null==object?
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This is probably a habit learned from C, to avoid this sort of typo (single = instead of a double ==):
if (object = null) {
The convention of putting the constant on the left side of == isn't really useful in Java since Java requires that the expression in an if evaluate to a b...
System.BadImageFormatException: Could not load file or assembly (from installutil.exe)
...g to install a Windows service using InstallUtil.exe and am getting the error message
15 Answers
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UIViewController viewDidLoad vs. viewWillAppear: What is the proper division of labor?
... server, you also have to think about latency. If you pack all of your network communication into viewDidLoad or viewWillAppear, they will be executed before the user gets to see the view - possibly resulting a short freeze of your app. It may be good idea to first show the user an unpopulated view ...
How can you determine a point is between two other points on a line segment?
...points (called a and b) on it represented by an x integer and a y integer for each point.
20 Answers
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ASP.NET MVC Razor pass model to layout
...yout page. The reason I don't like typing the layout page is that it will force you to always inherit a "base" viewmodel in all you specific view models. In my experience this usually isn't a very good idea and a lot of the time you will have issues when it's to late to change the design (or it will...