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Get the IP address of the machine

...hould be the same below. I've done a quick example below which will print all of the machine's IPv4 address, (you should also check the getifaddrs was successful ie returns 0). I've updated it show IPv6 addresses too. #include <stdio.h> #include <sys/types.h> #include <ifaddr...
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Make sure only a single instance of a program is running

...ode version is available singleton.py. Please file bugs here. You can install tend using one of the following methods: easy_install tendo pip install tendo manually by getting it from http://pypi.python.org/pypi/tendo sh...
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Is it possible to push a git stash to a remote repository?

...ffect either! It would only be confusing anyway since that wouldn't fetch all stashes, only the latest one; the list of stashes is the reflog of the ref refs/stashes. share | improve this answer ...
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Why should the copy constructor accept its parameter by reference in C++?

... reference, it's by value. To do that you make a copy, and to do that you call the copy constructor. But to do that, we need to make a new value, so we call the copy constructor, and so on... (You would have infinite recursion because "to make a copy, you need to make a copy".) ...
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How to get the request parameters in Symfony 2?

... The naming is not all that intuitive: use Symfony\Component\HttpFoundation\Request; public function updateAction(Request $request) { // $_GET parameters $request->query->get('name'); // $_POST parameters $request->r...
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CSS: background image on background color

...ch I colored blue if this panel is being selected (clicked on it). Additionally, I add a small sign ( .png image) to that panel, which indicates that the selected panel has been already selected before. ...
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Android存储系统基础知识:内部存储,外部存储,App特定目录 ASD(app speci...

...r file:///storage/emulated/0/ 要访问外部存储,需要 READ_ 或 WRITE_EXTERNAL_STORAGE 权限。 App特定目录 ASD(App-specific directory) 此外,可能还有一个特定于应用程序的目录(ASD),可以使用以下命令创建 Tai...
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How can I get the current network interface throughput statistics on Linux/UNIX? [closed]

...$dev/statistics"; my %stats = do { opendir +(my $dh), $dir; local @_ = readdir $dh; closedir $dh; map +($_, []), grep !/^\.\.?$/, @_; }; if (-t STDOUT) { while (1) { print "\033[H\033[J", run(); my ($time, $us) = gettimeofday(); my ($sec, $min, $hour) = l...
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How to get parameters from a URL string?

...ery'], $query); echo $query['email']; If you want to get the $url dynamically with PHP, take a look at this question: Get the full URL in PHP share | improve this answer | ...
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how to convert from int to char*?

... The first part doesn't actually answer the question (although it is good helpful information as I wasn't aware of that function) – jcoder Jun 1 '12 at 9:31 ...