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What is an optional value in Swift?
...String are completely different types.
Here's the most important thing to know: An optional is a kind of container. An optional String is a container which might contain a String. An optional Int is a container which might contain an Int. Think of an optional as a kind of parcel. Before you open it ...
How to set JVM parameters for Junit Unit Tests?
... files to your repository: it might work, but I do not recommend it.
You know how to set these for maven-surefire-plugin. Good. This is the most portable way (see Ptomli's answer for an example).
For the rest - you must remember that JUnit test cases are just a bunch of Java classes, not a standal...
Sending files using POST with HttpURLConnection
...velopers recommend to use the HttpURLConnection class, I was wondering if anyone can provide me with a good example on how to send a bitmap "file" (actually an in-memory stream) via POST to an Apache HTTP server. I'm not interested in cookies or authentication or anything complicated, but I just...
Android Facebook integration with invalid key hash
...h key through a command prompt is working on the first time only. I don't know the reason. I have also got the same problem. So I tried it through programmatically.
Follow these steps:
Paste the following code in oncreate().
try {
PackageInfo info = getPackageManager().getPackageInfo(
...
How do I maintain the Immersive Mode in Dialogs?
... //Update the WindowManager with the new attributes (no nicer way I know of to do this)..
WindowManager wm = (WindowManager) getActivity().getSystemService(Context.WINDOW_SERVICE);
wm.updateViewLayout(getDialog().getWindow().getDecorView(), getDialog().getWindow().getAt...
Event handling for iOS - how hitTest:withEvent: and pointInside:withEvent: are related?
... UIResponder does the following:
It calls pointInside:withEvent: of self
If the return is NO, hitTest:withEvent: returns nil. the end of the story.
If the return is YES, it sends hitTest:withEvent: messages to its subviews.
it starts from the top-level subview, and continues to other views until a...
ERROR: Error installing capybara-webkit:
... Note that if you want to install version 5.5 specifically, you will now need to do brew install homebrew/versions/qt55.
– jlleblanc
Nov 17 '16 at 21:13
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Uploading both data and files in one form using Ajax?
...
The problem I had was using the wrong jQuery identifier.
You can upload data and files with one form using ajax.
PHP + HTML
<?php
print_r($_POST);
print_r($_FILES);
?>
<form id="data" method="post" enctype="multipart/form-data">
<input type="text" nam...
Number of processors/cores in command line
...
If you want to do this so it works on linux and OS X, you can do:
CORES=$(grep -c ^processor /proc/cpuinfo 2>/dev/null || sysctl -n hw.ncpu)
sha...
Best way to define error codes/strings in Java?
...g or whatever*/ id();
}
public interface IMessage {
ICode code();
}
Now you can define any number of enums which provide me