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How to establish a connection pool in JDBC?
...h problems with DBCP under heavy load. Using C3P0 is dead simple. From the documentation:
ComboPooledDataSource cpds = new ComboPooledDataSource();
cpds.setDriverClass( "org.postgresql.Driver" ); //loads the jdbc driver
cpds.setJdbcUrl( "jdbc:postgresql://localhost/testdb" );
cpds.setUser("swaldman...
git pull fails “unable to resolve reference” “unable to update local ref”
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Why does this work? What is the problem that it fixes?
– Ikke
Feb 14 '17 at 14:22
5
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How to get method parameter names?
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Take a look at the inspect module - this will do the inspection of the various code object properties for you.
>>> inspect.getfullargspec(a_method)
(['arg1', 'arg2'], None, None, None)
The other results are the name of the *args and **kwargs variables, and th...
Gray out image with CSS?
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Does it have to be gray? You could just set the opacity of the image lower (to dull it). Alternatively, you could create a <div> overlay and set that to be gray (change the alpha to get the effect).
html:
<div id=...
Is it smart to replace boost::thread and boost::mutex with c++11 equivalents?
...ost, then gave up after some time :( ). Smaller reason why I would like to do it is that I would like to learn c++11 features, because people will start writing code in it.
So:
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PHP: How to remove all non printable characters in a string?
...: What about str_replace?
preg_replace is pretty efficient, but if you're doing this operation a lot, you could build an array of chars you want to remove, and use str_replace as noted by mgutt below, e.g.
//build an array we can re-use across several operations
$badchar=array(
// control char...
How to test android referral tracking?
I'm implementing some code to do my own referral tracking on downloads from the Android market.
8 Answers
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How to completely uninstall Android Studio on Mac?
I recently downloaded Android Studio on my Macbook Pro and I messed up with it every time I open it. It gives me plugin errors and several other errors. I need to uninstall it completely from my mac. I tried to delete it from my mac and then install it again as if you would do the first time, but it...
Does HTTP use UDP?
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Typically, no.
Streaming is seldom used over HTTP itself, and HTTP is seldom run over UDP. See, however, RTP.
For something as your example (in the comment), you're not showing a protocol for the resource. If that protocol were to be HTTP, then I wouldn't...
Java equivalent to #region in C#
I want to use regions for code folding in Eclipse ; how can that be done in Java?
21 Answers
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