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How do I check if a variable exists?
...have nested functions, variables in outer scopes. If you want to check for all of them, you're probably best off triggering NameError after all.
– Petr Viktorin
Jun 10 '14 at 20:18
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Custom error pages on asp.net MVC3
...t's of type IController so there's absolutely nothing preventing you from calling this method. And by the way Execute was protected in the Controller class as well in MVC 3, so there's no change in this regard.
– Darin Dimitrov
Oct 7 '13 at 10:29
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Eliminate extra separators below UITableView
..."bottom bounce" of the table is handled, as you prefer. (Height zero is usually fine).
To do it programmatically:
Swift
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.tableFooterView = UIView()
}
Objective-C
iOS 6.1+
- (void)viewDidLoad
{
[super viewDidLoad...
Access object child properties using a dot notation string [duplicate]
...(r, "b.b2"));
//-> 99
Although there are answers that extend this to "allow" array index access, that's not really necessary as you can just specify numerical indexes using dot notation with this method:
getDescendantProp({ a: [ 1, 2, 3 ] }, 'a.2');
//-> 3
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How to extract a substring using regex
...a i want' inside 'and even more data'"
text.split("'").zipWithIndex.filter(_._2 % 2 != 0).map(_._1)
res: Array[java.lang.String] = Array(the data i want, and even more data)
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Can someone explain the dollar sign in Javascript?
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I'm not sure I would call that link a "clear" explanation. Does it really take 6+ paragraphs to explain that $ is simply a valid character when defining function and variable names?
– Slight
Mar 20 '15 at 20:...
What are all the user accounts for IIS/ASP.NET and how do they differ?
Under Windows Server 2008 with ASP.NET 4.0 installed there is a whole slew of related user accounts, and I can't understand which one is which, how to they differ, and which one is REALLY the one that my app runs under. Here's a list:
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Is there a way to use SVG as content in a pseudo element :before or :after
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<div class="author_">Lord Byron</div>
.author_ { font-family: 'Playfair Display', serif; font-size: 1.25em; font-weight: 700;letter-spacing: 0.25em; font-style: italic;
position:relative;
margin-top: -0.5em;
color: bla...
How to install PyQt4 on Windows using pip?
...ld than just a pure python code package, which means it can be hard to install it from source.
Make sure you grab the correct Windows wheel file (python version, 32/64 bit), and then use pip to install it - e.g:
C:\path\where\wheel\is\> pip install PyQt4-4.11.4-cp35-none-win_amd64.whl
Should ...
PHP array delete by value (not key)
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Well, deleting an element from array is basically just set difference with one element.
array_diff( [312, 401, 15, 401, 3], [401] ) // removing 401 returns [312, 15, 3]
It generalizes nicely, you can remove as many elements as you like at the same time, if you want.
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