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What does an exclamation mark mean in the Swift language?
...d optionals should not be used when there is a possibility of a variable becoming nil at a later point. Always use a normal optional type if you need to check for a nil value during the lifetime of a variable.
Update 2:
The article "Interesting Swift Features" by Mike Ash gives some motivation fo...
Xcode Simulator: how to remove older unneeded devices?
...s
please also delete the corresponding .dmg file in
~/Library/Caches/com.apple.dt.Xcode/Downloads
to prevent Xcode from re-installing the same package again.
for XCode >= 6 see @praveen-matanam 's answer
shar...
Remove duplicates in the list using linq
...anything beyond that you need to implement your own comparer.
Please see http://msdn.microsoft.com/en-us/library/bb348436.aspx for an example.
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Nested fragments disappear during transition animation
...removed (as all children are first removed from the parent)
// See https://code.google.com/p/android/issues/detail?id=55228
Animation doNothingAnim = new AlphaAnimation(1, 1);
doNothingAnim.setDuration(getNextAnimationDuration(parent, DEFAULT_CHILD_ANIMATION_DURATION));
...
What is the relationship between UIView's setNeedsLayout, layoutIfNeeded and layoutSubviews?
...eUploader: {
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In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?
...d, due to timeouts or data eof. On server side it is still treated like an HTTP request, same as AJAX, except the answer on request will happen now or some time in the future, defined by the application logic.
support chart (full) | wikipedia
WebSockets - client ↔ server. Create a TCP connection ...
How to code a BAT file to always run as admin mode?
...
convert your batch file into .exe with this tool: http://www.battoexeconverter.com/ then you can run it as administrator
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Is there any async equivalent of Process.Start?
... for the process to finish, you can use the Exited event together with TaskCompletionSource:
static Task<int> RunProcessAsync(string fileName)
{
var tcs = new TaskCompletionSource<int>();
var process = new Process
{
StartInfo = { FileName = fileName },
Enabl...
How to split text without spaces into list of words?
...s the product of the probability of each individual word, and it's easy to compute it with dynamic programming. Instead of directly using the probability we use a cost defined as the logarithm of the inverse of the probability to avoid overflows.
The code
from math import log
# Build a cost dicti...
What does the M stand for in C# Decimal literal notation?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...