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Can I catch multiple Java exceptions in the same catch clause?
... the same block if ExceptionB is inherited, either directly or indirectly, from ExceptionA. The compiler will complain:
Alternatives in a multi-catch statement cannot be related by subclassing
Alternative ExceptionB is a subclass of alternative ExceptionA
...
Netty vs Apache MINA
...ng to reimplement the same functionality we already had on MINA, we did so from scratch. By following the excellent documentation and examples we ended up with more functionality in much, much less code.
The Netty Pipeline worked better for us. It is somehow simpler than MINAs, where everything is ...
When to use inline function and when not to use it?
...cantly impairs performance regardless of the faster execution that results from the calling overhead
inline functions that are I/O bound
the function is seldom used
constructors and destructors: even when empty, the compiler generates code for them
breaking binary compatibility when developing libra...
How can I sharpen an image in OpenCV?
...ing:
You use a Gaussian smoothing filter and subtract the smoothed version from the original image (in a weighted way so the values of a constant area remain constant).
To get a sharpened version of frame into image: (both cv::Mat)
cv::GaussianBlur(frame, image, cv::Size(0, 0), 3);
cv::addWeighted(f...
Guava equivalent for IOUtils.toString(InputStream)
...
@ColinD, if the inputStream is coming from inside of a doPost servlet, is there any point in closing it? (or worrying about closing it)
– Blankman
Apr 22 '12 at 19:43
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How do I add comments to package.json for npm install?
...nts as in the first example { "//": "first", "//": "second"} prevents you from using npm version and other command line utils which usually reparse whole JSON and discard the duplicate keys in process.
– jakub.g
Jul 1 '14 at 11:51
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What is N-Tier architecture?
...mes over unreliable, slow, and/or insecure network. This is very different from simple Desktop application where the data lives on the same machine as files or Web Application where you can hit the database directly.
For n-tier programming, you need to package up the data in some sort of transporta...
How to obtain the query string from the current URL with JavaScript?
...ry.makeString( object, [addQuestionMark] )'
// which returns a queryString from an object. An optional boolean parameter can be
// used to toggle a leading question mark.
// -------------------------------------------------------------------------------------
if (!window.location.query) {
window...
What is the use of the JavaScript 'bind' method?
...ions. => functions are more compact and do not change the this pointer from their defining scope, so you may not need to use bind() as often. For example, if you wanted a function on Button from the first example to hook up the click callback to a DOM event, the following are all valid ways of d...
JavaScript global event mechanism
...r handling facility in JavaScript? The use case is catching function calls from flash that are not defined.
10 Answers
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