you probably based your code on a web tutorial such as the one at http://www.e-string.com/content/custom-uitableviewcells-interface-builder or http://www.icodeblog.com/2009/05/24/custom-uitableviewcell-using-interface-builder/ Your problem (and I’m 99% sure this is where you tripped up, I just made the same mistake) is that in interface builder you linked your IBOutlets from File’s Owner when you should link them from the cell … Read more
You can use key(): <?php $array = array( “one” => 1, “two” => 2, “three” => 3, “four” => 4 ); while($element = current($array)) { echo key($array).”\n”; next($array); } ?>
When you use a code like this: using (var rsa = new RSACryptoServiceProvider(1024)) { // Do something with the key… // Encrypt, export, etc. } .NET (actually Windows) stores your key in a persistent key container forever. The container is randomly generated by .NET This means: Any random RSA/DSA key you have EVER generated for … Read more
Time passes and PHP is evolving. PHP 7 now supports the null coalescing operator, ??: // Fetches the value of $_GET[‘user’] and returns ‘nobody’ // if it does not exist. $username = $_GET[‘user’] ?? ‘nobody’; // This is equivalent to: $username = isset($_GET[‘user’]) ? $_GET[‘user’] : ‘nobody’; // Coalescing can be chained: this will return the … Read more
You call nextElement() twice in your loop. This call moves the enumeration pointer forward. You should modify your code like the following: while (e.hasMoreElements()) { String param = e.nextElement(); System.out.println(param); }
It helps to think of CtrlC in vim the same way you think of CtrlC in a shell – you want to stop whatever you were doing ASAP and get control back. So in vim, if you’re using CtrlC to break out of insert mode, vim isn’t going to bother checking if you just wrote … Read more
Yes, but not with that version of the constructor. You can do this: >>> dict([(1, 2), (3, 4)]) {1: 2, 3: 4} There are several different ways to make a dict. As documented, “providing keyword arguments […] only works for keys that are valid Python identifiers.”
It seems to be limited only by the script’s memory limit. A quick test got me a key of 128mb no problem: ini_set(‘memory_limit’, ‘1024M’); $key = str_repeat(‘x’, 1024 * 1024 * 128); $foo = array($key => $key); echo strlen(key($foo)) . “<br>”; echo strlen($foo[$key]) . “<br>”;
Try using the HashSet<T> class. Edit: I spent a long long time doing exactly what you did until I just stumbled on this class while reading a blog.
It has been noted by many well respected developers such as Brian Goetz and Josh Bloch that : If an object’s hashCode() value can change based on its state, then we must be careful when using such objects as keys in hash-based collections to ensure that we don’t allow their state to change when they … Read more