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void in C# generics?
...only be null. The instance constructor is private (and if someone tries to call this private constructor through reflection, an exception will be thrown at them).
Since value tuples were introduced (2017, .NET 4.7), it is maybe natural to use the struct ValueTuple (the 0-tuple, the non-generic va...
How does an underscore in front of a variable in a cocoa objective-c class work?
...uto-generated accessor (for the property) knows which ivar to use. Specifically, in your implementation file, your synthesize should look like this:
@synthesize missionName = _missionName;
More generically, this is:
@synthesize propertyName = _ivarName;
...
Which version of C# am I using
... What version do I have if in the drop down I see the Automatically selected based on framework version and can not select anything from the dropdown (it is disabled)? I am using the VS 2019.
– hellouworld
Jan 17 at 8:58
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Is it safe to check floating point values for equality to 0?
...of difference between two similar values must be greater than Epsilon. Typically, it is many times greater than Epsilon. Because of this, we recommend that you do not use Epsilon when comparing Double values for equality." - msdn.microsoft.com/en-gb/library/ya2zha7s(v=vs.110).aspx
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Where is Java's Array indexOf?
... solution, accept that that is exactly what the Java API is doing when you call indexOf. You can make something like this:
public static int indexOfIntArray(int[] array, int key) {
int returnvalue = -1;
for (int i = 0; i < array.length; ++i) {
if (key == array[i]) {
r...
What does the ??!??! operator do in C?
... - in this case because the "ASCII" wasn't ASCII. In ECMA-6 (almost always called ASCII, but not US-ASCII) there were 18 region-specific codes, but I don't know which codes they were. The one thing I can say for sure - in the British "ASCII", # was replaced with £. In other regions, maybe "ASCII" h...
How does `scp` differ from `rsync`?
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The major difference between these tools is how they copy files.
scp basically reads the source file and writes it to the destination. It performs a plain linear copy, locally, or over a network.
rsync also copies files locally or over a network. But it employs a special delta transfer algorithm ...
Use URI builder in Android or create URL with variables
... what I am doing with each segment. I also added toString() to the build() call to get the proper type back.
– David
Oct 3 '13 at 20:19
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Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
...t[AnyVal] because Int is a subtype of AnyVal. This means that you may provide an instance of List[Int] when a value of type List[AnyVal] is expected. This is really a very intuitive way for generics to work, but it turns out that it is unsound (breaks the type system) when used in the presence of ...
How to get the current time in YYYY-MM-DD HH:MI:Sec.Millisecond format in Java?
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@gaurav here is your cookie: callicoder.com/java-simpledateformat-thread-safety-issues
– kidnan1991
Aug 27 '19 at 2:54
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