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Checking if a list is empty with LINQ
What's the "best" (taking both speed and readability into account) way to determine if a list is empty? Even if the list is of type IEnumerable<T> and doesn't have a Count property.
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Get a filtered list of files in a directory
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Matteo Ragni
2,52111 gold badge1414 silver badges2929 bronze badges
answered Feb 8 '10 at 23:05
Ignacio Vazquez-AbramsIgnacio Va...
“Invalid signature file” when attempting to run a .jar
...jar library, bouncy castle . My code compiles fine, but running the jar leads to the following error:
21 Answers
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ActionController::InvalidAuthenticityToken
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I had the same issue but with pages which were page cached. Pages got buffered with a stale authenticity token and all actions using the methods post/put/delete where recognized as forgery attempts. Error (422 Unprocessable Enti...
Make .gitignore ignore everything except a few files
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Mohit
1,1681010 silver badges1818 bronze badges
answered Jun 12 '09 at 15:07
Joakim ElofssonJoakim Elofsson
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Difference between final and effectively final
...ple, suppose that the variable numberLength is not declared final, and you add the marked assignment statement in the PhoneNumber constructor:
public class OutterClass {
int numberLength; // <== not *final*
class PhoneNumber {
PhoneNumber(String phoneNumber) {
numberLength =...
What are the differences between ArrayList and Vector?
... no specific requirement to use Vectors.
Synchronization
If multiple threads access an ArrayList concurrently then we must externally synchronize the block of code which modifies the list either structurally or simply modifies an element. Structural modification means addition or deletion of eleme...
Is an anchor tag without the href attribute safe?
...okay to use an anchor tag without including the href attribute, and instead using a JavaScript click event handler? So I would omit the href completely, not even have it empty ( href="" ).
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How to get HTML 5 input type=“date” working in Firefox and/or IE 10
...upported in Firefox after all of this time. In fact, I don't think they added in much (if any) of the HTML 5 new types on an input element. Not surprised that it is not supported in IE10. So, my question is...
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Setting Access-Control-Allow-Origin in ASP.Net MVC - simplest possible method
...erContext)
{
filterContext.RequestContext.HttpContext.Response.AddHeader("Access-Control-Allow-Origin", "*");
base.OnActionExecuting(filterContext);
}
}
Tag your action:
[AllowCrossSiteJson]
public ActionResult YourMethod()
{
return Json("Works better?");
}
For ASP.N...