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Detect if Android device has Internet connection
...onseCode() == 200);
} catch (IOException e) {
Log.e(LOG_TAG, "Error checking internet connection", e);
}
} else {
Log.d(LOG_TAG, "No network available!");
}
return false;
}
Of course you can substitute the http://www.google.com URL for any other serv...
How do I get jQuery to select elements with a . (period) in their ID?
... For that reason, in CSS itself, you must escape a dot in an ID, too. All jQuery is doing is requiring you to follow the rules set out by CSS.
– bdukes
Apr 6 '09 at 14:11
6
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Check if URL has certain string with PHP
...URL and the rest check if it contains the word "car".
$url = 'http://' . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI'];
if (strpos($url,'car') !== false) {
echo 'Car exists.';
} else {
echo 'No cars.';
}
shar...
How to append text to an existing file in Java?
...he file does not already exist. It also does not append a newline automatically (which you often want when appending to a text file). Steve Chambers's answer covers how you could do this with Files class.
However, if you will be writing to the same file many times, the above has to open and close t...
What should I set JAVA_HOME environment variable on macOS X 10.6?
...a_home)
I haven't experienced any problems with that technique.
Occasionally I do have to change the value of JAVA_HOME to an earlier version of Java. For example, one program I'm maintaining requires 32-bit Java 5 on OS X, so when using that program, I set JAVA_HOME by running:
export JAVA_HOM...
How to remove the left part of a string?
...
But also throws if your input isn't all in the form "something=somethingelse".
– Dan Olson
Mar 1 '09 at 22:17
1
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difference between collection route and member route in ruby on rails?
...h search_photos_path Acts on collection of resources(display all photos)
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How to remove all the occurrences of a char in c++ string
...
Basically, replace replaces a character with another and '' is not a character. What you're looking for is erase.
See this question which answers the same problem. In your case:
#include <algorithm>
str.erase(std::remove(s...
How is Racket different from Scheme?
...and not R6RS and not a strict superset of either. I don't think it can be called 'Scheme' because it's not backwards compatible with any Scheme standard.
Most implementations offer extensions, but are otherwise backwards compatible, of course, the compiler that comes with Racket can also run in R5R...
How to use redis PUBLISH/SUBSCRIBE with nodejs to notify clients when data values change?
...o, node_redis and last but not least the sample code from media fire.
Install node.js+npm(as non root)
First you should(if you have not done this yet) install node.js+npm in 30 seconds (the right way because you should NOT run npm as root):
echo 'export PATH=$HOME/local/bin:$PATH' >> ~/.bas...