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Animate scrollTop not working in firefox
...d some are arguably rather far-fetched.
If the callback is idempotent and doesn't require a lot of computing power, firing it twice may be a complete non-issue. If multiple invocations of the callback are truly an issue, and if you want to avoid feature-detection, it might be more straight-forward ...
String.equals versus == [duplicate]
...therefore must be equivalent. The final return true after the while loop does not mean we have the same "Jorman", it means the that the two entities share the same value (equivalent) which does not imply equality. (The Java .equals method is misnamed in this regard).
– Alnit...
What is the difference between HTTP_HOST and SERVER_NAME in PHP?
...ment/intranet machine) then HTTP_HOST contains the port, while SERVER_NAME does not.
$_SERVER['HTTP_HOST'] == 'localhost:8080'
$_SERVER['SERVER_NAME'] == 'localhost'
(At least that's what I've noticed in Apache port-based virtualhosts)
Note that HTTP_HOST does not contain :443 when running on HT...
jQuery form serialize - empty string
...
Although it doesn't apply to this particular example, the same behavior occurs if one or more form inputs is disabled. Those inputs will not show up in the serialized string. In my case, all form inputs had values but were disabled, re...
How can I output the value of an enum class in C++11
...m class contained inside a class, from outside that class. the code above does indeed work for enum classes not contained within a class themselves.
– ofloveandhate
Sep 15 '15 at 14:42
...
What is the difference between Xamarin.Form's LayoutOptions, especially Fill and Expand?
..., if the parent view is not larger than its children, the expansion suffix does not make any difference as well.
Example
Let's have a look on the following example to see the difference between all eight layout options.
The app contains a dark gray StackLayout with eight nested white buttons, ea...
Array vs. Object efficiency in JavaScript
...94] = "b";
It's basically an array with holes in it, because every array does have continous indexing. It's slower than arrays without holes. But iterating manually through the array is even slower (mostly).
This is an object:
var a3 = {};
a3[29938] = "a";
a3[32994] = "b";
Here is a performanc...
How to assign from a function which returns more than one value?
...ade ago on r-help. Since then it has been added to the gsubfn package. It does not require a special operator but does require that the left hand side be written using list[...] like this:
library(gsubfn) # need 0.7-0 or later
list[a, b] <- functionReturningTwoValues()
If you only need the f...
How do I capture response of form.submit
...d - the data is handled on the server side. That is, the submit() function doesn't actually return anything, it just sends the form data to the server.
If you really wanted to get the response in Javascript (without the page refreshing), then you'll need to use AJAX, and when you start talking abou...
What is the difference between memoization and dynamic programming?
...e(s) and works its way upwards.
DP solves all the sub-problems, because it does it bottom-up
Unlike Memoization, which solves only the needed sub-problems
DP has the potential to transform exponential-time brute-force solutions into polynomial-time algorithms.
DP may be much more efficient beca...