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Casting a variable using a Type variable
In C# can I cast a variable of type object to a variable of type T where T is defined in a Type variable?
12 Answers
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MySQL “Group By” and “Order By”
...points out below the solution is to use ANY_VALUE() from 5.7 and above
See
http://www.cafewebmaster.com/mysql-order-sort-group
https://dev.mysql.com/doc/refman/5.6/en/group-by-handling.html
https://dev.mysql.com/doc/refman/5.7/en/group-by-handling.html
https://dev.mysql.com/doc/refman/5.7/en/miscell...
How to access random item in list?
I have an ArrayList, and I need to be able to click a button and then randomly pick out a string from that list and display it in a messagebox.
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How to check if IEnumerable is null or empty?
I love string.IsNullOrEmpty method. I'd love to have something that would allow the same functionality for IEnumerable. Is there such? Maybe some collection helper class? The reason I am asking is that in if statements the code looks cluttered if the patter is (mylist != null && mylist....
How can I get this ASP.NET MVC SelectList to work?
I create a selectList in my controller, to display in the view.
23 Answers
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How can I return NULL from a generic method in C#?
I have a generic method with this (dummy) code (yes I'm aware IList has predicates, but my code is not using IList but some other collection, anyway this is irrelevant for the question...)
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Difference between .tagName and .nodeName
...n the DOM Core spec.
nodeName is a property defined in the Node interface
http://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-F68D095
tagName is a property defined in the Element interface
http://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-104682815
btw the Node interface is implemented by every n...
Mocking objects with Moq when constructor has parameters
...ameters) OR you need to create the Moq with constructor arg specification. http://www.mockobjects.com/2007/04/test-smell-mocking-concrete-classes.html
The best thing to do would be right click on your class and choose Extract interface.
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Is there any downside for using a leading double slash to inherit the protocol in a URL? i.e. src=“/
...sheet that loads images from an external domain and I need it to load from https:// from secure order pages and http:// from other pages, based on the current URL. I found that starting the URL with a double slash inherits the current protocol. Do all browsers support this technique?
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How do I create a new line in Javascript?
... in the document
document.write("<br>");
Here's a sample fiddle
http://jsfiddle.net/g6eAF/
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