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Why can't I declare static methods in an interface?
...don't know which implementing class is the correct definition.
Java could allow the latter; and in fact, starting in Java 8, it does!
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How do you serve a file for download with AngularJS or Javascript?
...|ftp|mailto|tel|file|blob):/);
}]);
Please note that
Each time you call createObjectURL(), a new object URL is created, even if you've already created one for the same object. Each of these must be released by calling URL.revokeObjectURL() when you no longer need them. Browsers will release t...
How to insert text at beginning of a multi-line selection in vi/Vim
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@HKK, normally one uses the forward slash character / as a delimeter for the search and replace command. In this case we are inserting a forward slash as part of the search and replace so we use an alternative delimeter, namely the ex...
Store output of subprocess.Popen call in a string
I'm trying to make a system call in Python and store the output to a string that I can manipulate in the Python program.
15...
Python: Making a beep noise
...be happy to hear that Windows has its own (brace yourself) Beep API, which allows you to send beeps of arbitrary length and pitch. Note that this is a Windows-only solution, so you should probably prefer print('\a') unless you really care about Hertz and milliseconds.
The Beep API is accessed throug...
Bootstrap Carousel image doesn't align properly
...sive center-block" src="img/....jpg" alt="First slide">
This automatically does image resizing, and centers the picture.
Edit:
With bootstrap 4, just add the img-fluid class
<img class="img-fluid" src="img/....jpg">
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HTML5 form required attribute. Set custom validation message?
...ustomValidity works slightly differently to what I understood when I originally answered. If setCustomValidity is set to anything other than the empty string it will cause the field to be considered invalid; therefore you must clear it before testing validity, you can't just set it and forget.
Furt...
How to grey out a button?
... disabled by setting the alpha (making it semi-transparent). This is especially useful if your button background is an image, and you don't want to create states for it.
button.setAlpha(.5f);
button.setClickable(false);
update: I wrote the above solution pre Kotlin and when I was a rookie. It's m...
Is it possible to download an old APK for my app from Google Play?
...lished several revisions to my app. Unfortunately, I didn't keep copies of all the old APKs, and now I'd like to test upgrade from the old versions to my new version. Is there any way to download Google's copy of my old versions? The Google Play developer console shows my old APKs, but without a dow...
Is it possible to deserialize XML into List?
...
You can encapsulate the list trivially:
using System;
using System.Collections.Generic;
using System.Xml.Serialization;
[XmlRoot("user_list")]
public class UserList
{
public UserList() {Items = new List<User>();}
[XmlElement("user")]
publi...