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CKEditor instance already exists
... Don't use CKEDITOR.remove because it only clears the element from the array, but leaves all the DOM in memory. It's stated in the docs that it's meant for internal use: docs.cksource.com/ckeditor_api/symbols/CKEDITOR.html#.remove You should use instead instace.destroy() as madhaviaddan...
In Django, how do I check if a user is in a certain group?
...
You can access the groups simply through the groups attribute on User.
from django.contrib.auth.models import User, Group
group = Group(name = "Editor")
group.save() # save this new group for this example
user = User.objects.get(pk = 1) # assuming, there is one initial user
...
Why do we need virtual functions in C++?
...you overload func() so it takes a Cat*? If you have to derive more animals from Animal they would all need their own func().
The solution is to make eat() from the Animal class a virtual function:
class Animal
{
public:
virtual void eat() { std::cout << "I'm eating generic food."...
Should ol/ul be inside or outside?
...nd of! When a browser gives you back HTML (e.g. in the developer tools, or from .innerHTML), it's being re-generated from the element tree. So, Chrome isn't adjusting the HTML so much as creating a valid tree from the original HTML, then generating new HTML from that tree.
– s4...
“unpacking” a tuple to call a matching function pointer
...
@Xeverous: 1. doesn't work from the signatures: your std::make_unique expects a tuple, and a tuple can be created from an unpacked tuple only via another call to std::make_tuple. This is what I've done in the lambda (although it's highly redundant, as ...
What is the scope of variables in JavaScript?
...ation Styles
var
Identifiers declared using var have function scope, apart from when they are declared directly in the global context, in which case they are added as properties on the global object and have global scope. There are separate rules for their use in eval functions.
let and const
Identi...
Regular cast vs. static_cast vs. dynamic_cast [duplicate]
...ck would be unnecessary. Example:
void func(void *data) {
// Conversion from MyClass* -> void* is implicit
MyClass *c = static_cast<MyClass*>(data);
...
}
int main() {
MyClass c;
start_thread(&func, &c) // func(&c) will be called
.join();
}
In this example, ...
Drawing Isometric game worlds
...mend this problem, the inner for-loop's order must be reversed -- starting from the highest value, and rendering toward the lower value:
tile_map[][] = [[...],...]
for (i = 0; i < tile_map.size; i++):
for (j = tile_map[i].size; j >= 0; j--): // Changed loop condition here.
draw(...
How do I correctly clean up a Python object?
... By the way, if you're using Python 2.5, you'll need to do from future import with_statement to be able to use the with statement.
– Clint Miller
May 14 '09 at 20:39
...
How do I make a transparent border with CSS?
...(255,255,255,.5);
}
Demo
Here, you can change the opacity of the border from 0-1
If you simply want a complete transparent border, the best thing to use is transparent, like border: 1px solid transparent;
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