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Convert.ChangeType() fails on Nullable Types
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Does not seem to work for uniqueidentifier to string.
– Anders Lindén
Nov 5 '18 at 10:32
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Why do we need the “event” keyword while defining events?
...to private, so that only the containing class can invoke the event or override all the methods contained in it. The -= and += operators can still be invoked on an event from outside the class defining it (they get the access modifier you wrote next to the event).
You can also override the way -= and...
Is it possible to make a type only movable and not copyable?
...he type doesn't have a Drop implementation.
To answer the question you didn't ask... "what's up with moves and copy?":
Firstly I'll define two different "copies":
a byte copy, which is just shallowly copying an object byte-by-byte, not following pointers, e.g. if you have (&usize, u64), it...
In Matlab, when is it optimal to use bsxfun?
...n of the other array. This is what is called "singleton expasion". As an aside, the singleton dimensions are the ones that will be dropped if you call squeeze.
It is possible that for very small problems, the repmat approach is faster - but at that array size, both operations are so fast that it li...
How many and which are the uses of “const” in C++?
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Use const for copy-on-write classes, to make the compiler help you to decide when and when not you need to copy.
struct MyString {
char * getData() { /* copy: caller might write */ return mData; }
char const* getData() const { return mData; }
};
Explanation: You might want to share data...
Why can I access private variables in the copy constructor?
...g the "Why" of this - focusing too much on reiterating what behaviour's valid. "access modifiers work on class level, and not on object level." - yes, but why?
The overarching concept here is that it's the programmer(s) designing, writing and maintaining a class who is(are) expected to understand ...
Xcode doesn't show the line that causes a crash
...g. Do the following [in Xcode 4]:
In the Project Navigator on the left side of Xcode, click on the breakpoint navigator (almost all the way to the right hand side of the top button bar. The icon looks like a fat right arrow).
At the bottom of the navigator, click the "+" button.
Click "Add Excep...
URL matrix parameters vs. query parameters
...geable, however, query parameters are generally better supported and more widely recognized. In general, I would recommend that you stick with query parameters for things like HTML forms and simple, single-level HTTP APIs.
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How to create materialized views in SQL Server?
...ince views are quite common in any database
Next, a table. This should be identical to the view in columns and data. This will store a snapshot of the view data.
Then, a procedure that truncates the table, and reloads it based on the current data in the view.
Finally, a job that triggers the proce...
How to change a module variable from another module?
...bar.bar.a approach won't help much in most use cases. It's probably a weak idea to mix compile or module loading and runtime assignments because you'll end up confusing yourself (or others that use your code). Especially in languages that behave somewhat inconsistently about it, like python arguably...