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Qt events and signal/slots
...resents a new abstraction: a widget that acts like a button, but with some extra functionality. We added this functionality very conveniently:
Since we reimplemented a virtual, our implementation automatically became encapsulated in our class. If Qt's designers had made keyPressEvent a signal, we ...
Bootstrap 3: Keep selected tab on page refresh
...
You may want to add string bracket on the selector, like 'a[href="' + location.hash + '"]' . Stumbled upon a syntax error.
– asdacap
Feb 2 '16 at 10:16
...
What is a Manifest in Scala and when do you need it?
...tic type of a collection. For example, what if you wanted to treat a List[String] differently from other types of a List:
def foo[T](x: List[T])(implicit m: Manifest[T]) = {
if (m <:< manifest[String])
println("Hey, this list is full of strings")
else
println("Non-string...
ModelState.AddModelError - How can I add an error that isn't for a property?
...than one of it's properties, as usual you call:
ModelState.AddModelError(string key, string errorMessage);
but use an empty string for the key:
ModelState.AddModelError(string.Empty, "There is something wrong with Foo.");
The error message will present itself in the <%: Html.ValidationSumm...
Get css top value as number not as string?
...
You can use the parseInt() function to convert the string to a number, e.g:
parseInt($('#elem').css('top'));
Update: (as suggested by Ben): You should give the radix too:
parseInt($('#elem').css('top'), 10);
Forces it to be parsed as a decimal number, otherwise strings ...
Updating the list view when the adapter data changes
...
Change this line:
mMyListView.setAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,
listItems));
to:
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
...
jQuery Mobile: document ready vs. page events
...ata.toPage,
from = data.options.fromPage;
if (typeof to === 'string') {
var u = $.mobile.path.parseUrl(to);
to = u.hash || '#' + u.pathname.substring(1);
if (from) from = '#' + from.attr('id');
if (from === '#index' && to === '#second') {
...
ASP.NET Web API Authentication
...ee:
[Authorize]
public class UsersController : ApiController
{
public string Get()
{
return "This is a top secret material that only authorized users can see";
}
}
Now we could write a client application consuming this API. Here's a trivial console application example (make su...
Write string to text file and ensure it always overwrites the existing content.
I have a string with a C# program that I want to write to a file and always overwrite the existing content. If the file isn't there, the program should create a new file instead of throwing an exception.
...
Is there any haskell function to concatenate list with separator?
..."?"]
"is there such a function ?"
unlines works similarly, only that the strings are imploded using the newline character and that a newline character is also added to the end. (This makes it useful for serializing text files, which must per POSIX standard end with a trailing newline)
...