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Instance variables vs. class variables in Python
...r instance. If there would be more than one instance (which won't happen), all instance should have the same configuration. I wonder which of the following options would be better or more "idiomatic" Python.
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Disable/enable an input with jQuery?
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As an aside, remember that, if you want to disable ALL form input controls - incl. checkboxes, radios, textareas, etc. - you have to select ':input', not just 'input'. The latter selects only actual <input> elements.
– Cornel Masson
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How do I apply the for-each loop to every character in a String?
...cost penalty.
From the documentation:
[toCharArray() returns] a newly allocated character array whose length is the length of this string and whose contents are initialized to contain the character sequence represented by this string.
There are more verbose ways of iterating over characters i...
Cast List to List
...List<Apple>();
List<IFruit> fruit = apples; // Fortunately not allowed
fruit.Add(new Banana());
// Eek - it's a banana!
Apple apple = apples[0];
Now you can convert a List<Apple> to an IEnumerable<IFruit> in .NET 4 / C# 4 due to covariance, but if you want a List<IFruit...
Change Bootstrap input focus blue glow
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You can use the .form-control selector to match all inputs. For example to change to red:
.form-control:focus {
border-color: #FF0000;
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(255, 0, 0, 0.6);
}
Put it in your custom css file and load it after ...
Spring Cache @Cacheable - not working while calling from another method of the same bean
Spring cache is not working when calling cached method from another method of the same bean.
9 Answers
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Unpacking, extended unpacking and nested extended unpacking
...luating these "by hand," I'll suggest some simple substitution rules. Basically, you might find it easier to understand an expression if all the iterables are formatted in the same way.
For the purposes of unpacking only, the following substitutions are valid on the right side of the = (i.e. for rv...
Spring MVC: How to perform validation?
...out that: I saw it validates a class. Does the class have to be filled manually with the values from the user input, and then passed to the validator?
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How do I get the web page contents from a WebView?
...k I found the answer in this post on lexandera.com. The code below is basically a cut-and-paste from the site. It seems to do the trick.
final Context myApp = this;
/* An instance of this class will be registered as a JavaScript interface */
class MyJavaScriptInterface
{
@JavascriptInterface
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How to increase the execution timeout in php?
...me stuff in the php.ini it may be a newbie question, but an legit question all the same.
– Hannes
Sep 30 '10 at 10:13
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