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How to add a touch event to a UIView?
...esture recognizer documentation. It is fairly understandable and helpful.
Known issues with my examples above: (1) Pan view resets its frame on next gesture event. (2) Swipe view comes from the wrong direction on the first swipe. (These bugs in my examples should not affect your understanding of how...
How to detect first time app launch on an iPhone
...
I wrote a tiny library for this very purpose. It lets me know whether this is the first launch ever, or just for this version, and any past versions the user has installed. It's available on github as a cocoapod under the Apache 2 license: GBVersionTracking
You just call this in ap...
top nav bar blocking top content of the page
...or inspiring a programatic solution! I have a great working implementation now in GWT with nice encapsulated well structured code... thanks to a lack of Javascript ;-)
– Alex Worden
Mar 13 '16 at 20:15
...
In Ruby, is there an Array method that combines 'select' and 'map'?
...
Ruby 2.7+
There is now!
Ruby 2.7 is introducing filter_map for this exact purpose. It's idiomatic and performant, and I'd expect it to become the norm very soon.
For example:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.ev...
What's the point of NSAssert, actually?
...orce that:
void gimme_positive_ints(int i) {
assert(i > 0);
}
And now you'll see something like this in the error log (or STDERR):
Assertion i > 0 failed: file example.c, line 2
So not only does it safe-guard against potentially bad inputs but it logs them in a useful, standard way. ...
Anything wrong with NOT signing a .NET assembly?
...'t a right answer here.
The point that compelled this edit though is that nowadays we take so many open source libraries from NuGet, and many of them are not signed at all. If you wanted to sign your assembly, you'd need to have any dependencies signed too. Many of the open source libraries that ar...
How to shut down the computer from C#
... a window
var psi = new ProcessStartInfo("shutdown","/s /t 0");
psi.CreateNoWindow = true;
psi.UseShellExecute = false;
Process.Start(psi);
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fo...
Collect successive pairs from a stream
...r;
return pair;
}
}).skip(1); // drop first null
Now you can limit your stream to the length you want
pairStream.limit(1_000_000).forEach(i -> System.out.println(i));
P.S. I hope there is better solution, something like clojure (partition 2 1 stream)
...
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(
...
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize
...
If someone does not know how to do this - sudo gedit ~/.profile, add the line from the answer there and save the file.
– gotqn
Jul 1 '15 at 13:16
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