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Remove elements from collection while iterating
...t and removeAl technique works with any Collection (Collection, List, Set, etc).
The ListIterator technique obviously only works with lists, provided that their given ListIterator implementation offers support for add and remove operations.
The Iterator approach would work with any type of collec...
What's the difference between session.Merge and session.SaveOrUpdate?
... associated with the current session, and copy its state (property values, etc.) to an object that is associated with the current session (with the same PK value/identifier, of course).
saveOrUpdate() will call Save or Update on your session, based on a given object's identity value.
...
LINQ: When to use SingleOrDefault vs. FirstOrDefault() with filtering criteria
... on how you sort the records. You can use OrderBy() or OrderByDescending() etc before calling FirstOrDefault. See the OP's code example.
– Gan
May 19 '14 at 9:02
5
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MVC Vs n-tier architecture
...request is received and handled by Controller (Request handler, redirector etc)
Controller process a basic info on the request and redirect it to the relevant Model which can fill up the data request.
Model fill up the request according to the parameters passed by Controller and send back the result...
Is there a way to create xxhdpi, xhdpi, hdpi, mdpi and ldpi drawables from a large scale image?
...ieve this is correct. Internally, Android uses DPI numbers (160, 320, 480, etc.), not strings, for the resource qualifiers. If the system DPI is 160 and it finds a 640 image, it will downsample it by 4, without needing to "know about" its textual qualifier. We've shipped resources that only exist in...
What does LINQ return when the results are empty
...mpty" IQueryable, which ToList() will correctly change to be an empty list etc.
Do be careful with some of the operators, as they will throw if you send them an empty enumerable. This can happen when you chain them together.
...
ASP.NET MVC Custom Error Handling Application_Error Global.asax?
...ages";
IControllerFactory factory = ControllerBuilder.Current.GetControllerFactory();
IController controller = factory.CreateController(rc, "ErrorPages");
controller.Execute(rc);
ctx.Server.ClearError();
}
}
ErrorPagesController
public A...
Is std::vector copying the objects with a push_back?
...
From C++11 onwards, all the standard containers (std::vector, std::map, etc) support move semantics, meaning that you can now pass rvalues to standard containers and avoid a copy:
// Example object class.
class object
{
private:
int m_val1;
std::string m_val2;
public:
...
How to compare types
...typeField and I want to know if it is System.String , System.DateTime , etc., but typeField.Equals(System.String) doesn't work.
...
Error 'LINK : fatal error LNK1123: failure during conversion to COFF: file invalid or corrupt' after
...orked for me, but my "correct" cvtres.exe file was a different size, date, etc. (Still from VS 2012 bin, though)
– aampere
Sep 14 '16 at 23:22
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