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Why rename synthesized properties in iOS with leading underscores? [duplicate]
...project in Xcode 4, the boilerplate code adds an underscore character when it synthesizes the ivars in the implementation file as:
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Are arrays passed by value or passed by reference in Java? [duplicate]
Arrays are not a primitive type in Java, but they are not objects either , so are they passed by value or by reference? Does it depend on what the array contains, for example references or a primitive type?
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Why is using onClick() in HTML a bad practice?
...JavaScript events, such as onClick() , in HTML is a bad practice, because it's not good for semantics. I would like to know what the downsides are and how to fix the following code?
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Accept server's self-signed ssl certificate in Java client
It looks like a standard question, but I couldn't find clear directions anywhere.
12 Answers
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Using str_replace so that it only acts on the first match?
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Can be done with preg_replace:
function str_replace_first($from, $to, $content)
{
$from = '/'.preg_quote($from, '/').'/';
return preg_replace($from, $to, $content, 1);
}
echo str_replace_first('abc', '123', 'abcdef abcdef abcde...
How do CDI and EJB compare? interact?
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CDI: it is about dependency injection. It means that you can inject interface implementation anywhere. This object can be anything, it can be not related to EJB. Here is an example of how to inject random generator using CDI. Ther...
Can ordered list produce result that looks like 1.1, 1.2, 1.3 (instead of just 1, 2, 3, …) with css?
...duce results that looks like 1.1, 1.2, 1.3 (instead of just 1, 2, 3, ...) with CSS? So far, using list-style-type:decimal has produced only 1, 2, 3, not 1.1, 1.2., 1.3.
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Python nonlocal statement
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Compare this, without using nonlocal:
x = 0
def outer():
x = 1
def inner():
x = 2
print("inner:", x)
inner()
print("outer:", x)
outer()
print("global:", x)
# inner: 2
# outer: 1
# global: 0
To this, usi...
What's faster, SELECT DISTINCT or GROUP BY in MySQL?
...e databases implement DISTINCT under the hood).
If one of them is faster, it's going to be DISTINCT. This is because, although the two are the same, a query optimizer would have to catch the fact that your GROUP BY is not taking advantage of any group members, just their keys. DISTINCT makes this ...
How to remove “index.php” in codeigniter's path
How do I remove the "index.php" sticking out in every path in codeigniter somewhere in the center?
I want clean non index.php-fied URLs ?
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