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Is null reference possible?
... to represent null in an enumeration of singleton objects, then it's a bad idea to (de)reference null (it C++11, nullptr).
Why not declare static singleton object that represents NULL within the class as follows and add a cast-to-pointer operator that returns nullptr ?
Edit: Corrected several mist...
Explain “claims-based authentication” to a 5-year-old
... ID card, and then present the ID to the bartender.
Some may laugh at the idea of just writing your birthday on a piece of paper, but this is what is happening when you are authenticating users within the application itself because it is up to the bartender (or your application) to trust the piece ...
Should CSS always preceed Javascript?
.... According to quirksmode, iOS 2.2/Android 1.0 use WebKit 525. I have no idea what Windows Phone looks like.
However, I ran the test on my Android 4 device, and while I saw numbers similar to the desktop results, I hooked it up to the fantastic new remote debugger in Chrome for Android, and Netwo...
Do I need a Global.asax.cs file at all if I'm using an OWIN Startup.cs class and move all configurat
...wrongfully expected the dependency to include everything to run on IIS. No idea why I thought that since I wanted an Owin startup to uncouple the IIS dependency in the first place.
– Pluc
Dec 9 '15 at 16:53
...
What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?
...he why, and only then go to the how.
When namespaces were introduced, the idea was to have everything defined in namespaces, so that separate libraries don't interfere with each other. However that introduced a problem with operators. Look for example at the following code:
namespace N
{
class X...
How do I make a list of data frames?
... merge (join) a list of data frames, you can see these answers. Often, the idea is to use Reduce with merge (or some other joining function) to get them together.
Why put the data in a list?
Put similar data in lists because you want to do similar things to each data frame, and functions like lapp...
What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?
...e its purpose is migration to wchar_t, which we've seen above isn't a good idea, there is no value whatsoever in using TCHAR.
1. Characters which are representable in wchar_t strings but which are not supported in any locale are not required to be represented with a single wchar_t value. This me...
Mock framework vs MS Fakes frameworks
...thod of the IStudentRepository test double, I want it to return true.
The idea of stubs in NMock and MS fakes is the same, but with NMock you would do something like this:
Stub.On(mockStudentRepository).Method("DoesStudentExist").Will(Return.Value(true));
And with MSFakes you would do somethign...
What is “entropy and information gain”?
...y, there are ensemble learning methods that take a different approach. One idea is to randomize the learning algorithm by picking a random subset of features at each candidate split, and building a bunch of these random trees and averaging their result. Also worth checking out algorithms like Random...
Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
...m that perspective. Just from a "looking back, maybe it wasn't such a good idea"-perspective. Guess I should have been clearer :)
– harold
Jun 24 '12 at 12:12
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