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Difference between Covariance & Contra-variance
... are properties of a mapping function that associates one member of a set with another. More specifically, a mapping can be covariant or contravariant with respect to a relation on that set.
Consider the following two subsets of the set of all C# types. First:
{ Animal,
Tiger,
Fruit,
Bana...
A Java API to generate Java source files [closed]
...es an API called CodeModel for generating Java source files using an API. It's not the easiest thing to get information on, but it's there and it works extremely well.
The easiest way to get hold of it is as part of the JAXB 2 RI - the XJC schema-to-java generator uses CodeModel to generate its ja...
Application_Error not firing when customerrors = “On”
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UPDATE
Since this answer does provide a solution, I will not edit it, but I have found a much cleaner way of solving this problem. See my other answer for details...
Original Answer:
I figured out why the Application_Error() method is not being invoked...
Global.asax.cs
public class M...
Split code over multiple lines in an R script
I want to split a line in an R script over multiple lines (because it is too long). How do I do that?
5 Answers
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How to get existing fragments when using FragmentPagerAdapter
I have problem making my fragments communicating with each other through the Activity , which is using the FragmentPagerAdapter , as a helper class that implements the management of tabs and all details of connecting a ViewPager with associated TabHost . I have implemented FragmentPagerAdapter...
Constants in Objective-C
...Constants.m should be added to your application/framework's target so that it is linked in to the final product.
The advantage of using string constants instead of #define'd constants is that you can test for equality using pointer comparison (stringInstance == MyFirstConstant) which is much faster...
How to use the “number_to_currency” helper method in the model rather than view?
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It’s not available because its use in a model (typically) violates MVC (and it does seem to in your case). You're taking data and manipulating it for presentation. This, by definition, belongs in the view, not the model.
H...
GitHub pages are not updating
I'm running into a weird issue with GitHub pages. I pushed a new commit to my personal pages page maltzj.github.io , but the new article isn't showing up there. When I execute the server locally, a post lives at localhost:4000/posts/the-price-of-inconsistent-code/ . However, when I go to http://m...
Why are Where and Select outperforming just Select?
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Select iterates once over the entire set and, for each item, performs a conditional branch (checking for validity) and a + operation.
Where+Select creates an iterator that skips invalid elements (doesn't yield them), performing a +...
Get attribute name value of
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edited Jul 10 '14 at 15:08
gung - Reinstate Monica
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