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How can I properly handle 404 in ASP.NET MVC?
...a generic ControllerFactory that will be easy to implement if you aren't already using a ControllerFactory.
– David Murdoch
Feb 25 '11 at 16:26
7
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Select first row in each GROUP BY group?
...rchases (customer, total DESC, id);
May be too specialized. But use it if read performance for the particular query is crucial. If you have DESC NULLS LAST in the query, use the same in the index so that sort order matches and the index is applicable.
Effectiveness / Performance optimization
Weigh ...
Why does calling a method in my derived class call the base class method?
...
Please read about polymorphism in C#: Polymorphism (C# Programming Guide)
This is an example from there:
When the new keyword is used, the new class members are called instead
of the base class members that have been replace...
Does PostgreSQL support “accent insensitive” collations?
...fortunately, unaccent() is only STABLE, not IMMUTABLE. According to this thread on pgsql-bugs, this is due to three reasons:
It depends on the behavior of a dictionary.
There is no hard-wired connection to this dictionary.
It therefore also depends on the current search_path, which can change easi...
Is gcc 4.8 or earlier buggy about regular expressions?
... version 3.9.0 (tags/RELEASE_390/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
$ ./a.out # compiled with 'clang -lstdc++'
<regex> works, look: true
Here be Dragons
This is totally unsupported and relies on the detection of private macros that the GCC ...
Timer function to provide time in nano seconds using C++
...drivers may result in these routines returning
different values as the thread moves from one processor to another...
However this StackOverflow answer https://stackoverflow.com/a/4588605/34329 states that QPC should work fine on any MS OS after Win XP service pack 2.
This article shows that Win...
Difference between Big-O and Little-O Notation
...this: f ∈ O(f) is true, but f ∈ o(f) is false. Therefore, Big-O can be read as "f ∈ O(g) means that f's asymptotic growth is no faster than g's", whereas "f ∈ o(g) means that f's asymptotic growth is strictly slower than g's". It's like <= versus <.
More specifically, if the value of ...
What does OSGi solve?
I've read on Wikipedia and other sites about OSGi , but I don't really see the big picture. It says that it's a component-based platform, and that you can reload modules at runtime. Also the "practical example" given everywhere is the Eclipse Plugin Framework.
...
How to declare global variables in Android?
...ent I have with the use of Singletons rather than subclassing Application. Read it at your own risk.
ORIGINAL ANSWER:
The more general problem you are encountering is how to save state across several Activities and all parts of your application. A static variable (for instance, a singleton) is a ...
javascript: recursive anonymous function?
...oid polluting the global namespace another way with ES5 sctrict (I haven't read deep into ES5 yet)?
– Incognito
Oct 8 '10 at 15:01
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