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How do you change Background for a Button MouseOver in WPF?
...answer that uses ControlTemplate and has an animation effect
(adapted from https://docs.microsoft.com/en-us/dotnet/framework/wpf/controls/customizing-the-appearance-of-an-existing-control)
In your resource dictionary define a control template for your button like this one:
<ControlTemplate Targ...
CSS: fixed position on x-axis but not y?
...{
background: red;
width: 50px;
height: 50px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container">
<div class="position-fixed-y red-box">
</div>
The pattern of base pairs in the DNA dou...
Rails 4 multiple image or file upload using carrierwave
...ke a look at CarrierWave's documentation, this is actually very easy now.
https://github.com/carrierwaveuploader/carrierwave/blob/master/README.md#multiple-file-uploads
I will use Product as the model I want to add the pictures, as an example.
Get the master branch Carrierwave and add it to your...
deciding among subprocess, multiprocessing, and thread in Python?
...tive).
(For the current status of Twisted support for Python 3, check out: https://twistedmatrix.com/documents/current/core/howto/python3.html)
The distributed option:
Yet another realm of processing you haven't asked about, but which is worth considering, is that of distributed processing. There a...
Can I combine :nth-child() or :nth-of-type() with an arbitrary selector?
...ng as dupes of this one so I will leave this here. I came across this blog https://blog.blackbam.at/2015/04/09/css-nth-child-selector-ignore-hidden-element/ that uses a clever css approach to make nth-child ignore hidden elements, as follows:
The following CSS adds a margin right to every second vi...
Why '&&' and not '&'?
...n the process in RealTime/High to mitigate the scheduler having an effect: https://gist.github.com/1200737
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Why can't we have static method in a (non-static) inner class?
...
From: https://docs.oracle.com/javase/tutorial/java/javaOO/nested.html
As with instance methods and variables, an inner class is associated with an instance of its enclosing class and has direct access to that object's methods a...
Mimicking sets in JavaScript?
...e works best for you after looking at both. The ES6 set polyfill is here: https://github.com/jfriend00/ES6-Set.
FYI, in my own testing, I've noticed that the Firefox v29 Set implementation is not fully up-to-date on the current draft of the spec. For example, you can't chain .add() method calls li...
How much faster is C++ than C#?
...sy to
access.
More anecdotal data comparing the performance of C++ and C#: https://benchmarksgame.alioth.debian.org/u64q/compare.php?lang=gpp&lang2=csharpcore
The bottom line is that C++ gives you much more control over performance. Do you want to use a pointer? A reference? Stack memory? ...
Sending files using POST with HttpURLConnection
...
This answer https://stackoverflow.com/a/33149413/6481542 got me 90% of the way with uploading large files to a development Django server, but I had to use setFixedLengthStreamingMode to make it worked. That requires setting the Content-...