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How to initialise a string from NSData in Swift
...ar swiftString = NSString(data: NSData!, encoding: UInt) as! String that's all
– Gintama
Aug 29 '15 at 6:52
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Do Facebook Oauth 2.0 Access Tokens Expire?
...ays, when the person using your app makes a request to Facebook's servers.
All access tokens need to be renewed every 90 days with the consent of the person using your app.
Facebook change announce (10/04/2018)
Facebook updated token expiration page (10/04/2018)
offline_access:
Enables your a...
What's the best way to set a single pixel in an HTML5 canvas?
... as an exercise for the reader
creating another img or canvas filled with all the pixels you want and use drawImage() to blit just the pixel you want across. This would probably be very fast, but has the limitation that you need to pre-calculate the pixels you need.
Note that my tests do not atte...
Remove elements from collection while iterating
...61-4")));
Collect and Remove
The first technique consists in collecting all the objects that we want to delete (e.g. using an enhanced for loop) and after we finish iterating, we remove all found objects.
ISBN isbn = new ISBN("0-201-63361-2");
List<Book> found = new ArrayList<Book>()...
How do I reset the scale/zoom of a web app on an orientation change on the iPhone?
... the landscape mode I have to double tap on something twice, first to zoom all the way in (the normal double tap behavior) and again to zoom all the way out (again, the normal double tap behavior). When it zooms out, it zooms out to the correct NEW scale for landscape mode.
...
Extract a number from a string (JavaScript)
...ecific example,
var thenum = thestring.replace( /^\D+/g, ''); // replace all leading non-digits with nothing
in the general case:
thenum = "foo3bar5".match(/\d+/)[0] // "3"
Since this answer gained popularity for some reason, here's a bonus: regex generator.
function getre(str, num) {
...
Is background-color:none valid CSS?
...nswered Jan 5 '12 at 8:42
James AllardiceJames Allardice
152k2121 gold badges309309 silver badges301301 bronze badges
...
What is the difference between “int” and “uint” / “long” and “ulong”?
...128 to 127. The 9th bit represents 256. So with 8 bits you can represent all values up to 255 (9th val - 1). The range from -128 to 127 has a length of exactly 255. So there is no bit that holds the sign. All values up to 127 are positive. Values above get displayed negative. 255 would be -1. 254 wo...
Hidden Features of MySQL
...
Since you put up a bounty, I'll share my hard won secrets...
In general, all the SQLs I tuned today required using sub-queries. Having come from Oracle database world, things I took for granted weren’t working the same with MySQL. And my reading on MySQL tuning makes me conclude that MySQL is be...
C++ cout hex values?
...
This seems to change all future output from cout to hex; so if you only want 'a' to be printed in hex you may want something like cout << hex << a << dec; to change it back.
– ShreevatsaR
M...