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What does (function($) {})(jQuery); mean?
... I have been simply copying the line into all my plugins without actually knowing what it means. Can someone tell me a little more about these? Perhaps an explanation will come in handy someday when writing a framework :)
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Change the Target Framework for all my projects in a Visual Studio Solution
...ckup settings (will create a backup by default)
Start Replacing (Ctrl+R)
Now If for some reason you need to do this in code, I would probably be able to do that as well (it's how I found this question). In that case, please request it in a comment.
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Transpose list of lists
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list(map(list, zip(*l)))
Explanation:
There are two things we need to know to understand what's going on:
The signature of zip: zip(*iterables) This means zip expects an arbitrary number of arguments each of which must be iterable. E.g. zip([1, 2], [3, 4], [5, 6]).
Unpacked argument lists: Giv...
How to pass event as argument to an inline event handler in JavaScript?
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Passing ´event´ is the only way that I know, provided it is supported. Parsing ´this´ is of no use in this situation
– Xotic750
May 6 '13 at 19:01
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Difference between and text
There are many legends about them. I want to know the truth. What are the differences between the two following examples?
3...
Officially, what is typename for?
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Unfortunately, the compiler is not required to be psychic, and doesn't know whether T::sometype will end up referring to a type name or a static member of T. So, one uses typename to tell it:
template<class T> somefunction( T * arg )
{
typename T::sometype x; // works!
.
.
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SVG fill color transparency / alpha?
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Do you know if they changed something recently? I had a working chrome application that used fill:rgb(...) and now it is completely broken. I woul apprecciate your help!
– Mariodiar
Aug 16 '17 a...
AngularJS : How to watch service variables?
...back){
observerCallbacks.push(callback);
};
//call this when you know 'foo' has been changed
var notifyObservers = function(){
angular.forEach(observerCallbacks, function(callback){
callback();
});
};
//example of when you may want to notify observers
this.foo = someN...
Is it worth using Python's re.compile?
... @BrianM.Sheldon naming the regex well doesn't really help you know what its various capturing groups represent.
– Ken Williams
Oct 23 '18 at 3:58
add a comment
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Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
.../y - 1/x^2) but they will be equally complicated.
Let's look at 1/sqrt(y) now. You can try f(x) = x^2 - 1/y, but it will be equally complicated: dx = 2xy / (y*x^2 - 1) for instance.
One non-obvious alternate choice for f(x) is: f(x) = y - 1/x^2
Then: dx = -f/f' = (y - 1/x^2) / (2/x^3) = 1/2 * x * ...