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Preferred Java way to ping an HTTP URL for availability
...e request method. However, you need to take into account that some poor webapps or homegrown servers may return HTTP 405 error for a HEAD (i.e. not available, not implemented, not allowed) while a GET works perfectly fine. Using GET is more reliable in case you intend to verify links/resources not d...
How to use PHP OPCache?
...nd it features a new code caching module called OPCache, but there doesn't appear to be any documentation for it.
5 Answer...
How do I use reflection to invoke a private method?
...ccepts BindingFlags:
MethodInfo dynMethod = this.GetType().GetMethod("Draw_" + itemType,
BindingFlags.NonPublic | BindingFlags.Instance);
dynMethod.Invoke(this, new object[] { methodParams });
Here's the BindingFlags enumeration documentation.
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Best practice for instantiating a new Android Fragment
I have seen two general practices to instantiate a new Fragment in an application:
13 Answers
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How can I make a horizontal ListView in Android? [duplicate]
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Two reasons I don't go with this approach: (1) It doesn't extend AdapterView, so I can't use it interchangeably with my ListView and ListAdapter code, and (2) There is no recycling of views. Maybe it would be possible to tack this functionality onto the sc...
How to extract img src, title and alt from html using php? [duplicate]
...you can't use an XML parser. E.G. with this web page source code :
/* preg_match_all match the regexp in all the $html string and output everything as
an array in $result. "i" option is used to make it case insensitive */
preg_match_all('/<img[^>]+>/i',$html, $result);
print_r($result)...
(-2147483648> 0) returns true in C++?
...ndefined anyway.
As a side note, this is the reason why constants like INT_MIN are typically defined as
#define INT_MIN (-2147483647 - 1)
instead of the seemingly more straightforward
#define INT_MIN -2147483648
The latter would not work as intended.
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Make UINavigationBar transparent
...gation bar with an opaque custom background image, the navigation bar will apply a system opacity less than 1.0 to the image.
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How do I convert an NSString value to NSData?
...t Developer coming here,
to convert from NSString / String to NSData
var _nsdata = _nsstring.dataUsingEncoding(NSUTF8StringEncoding)
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C++ catching all exceptions
...s, but it should be considered bad design. You can use c++11's new current_exception mechanism, but if you don't have the ability to use c++11 (legacy code systems requiring a rewrite), then you have no named exception pointer to use to get a message or name. You may want to add separate catch cl...