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How do I set environment variables from Java?
...s to start, though, so I'd rather modify the current process's environment and let the subprocesses inherit it.
19 Answers
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How to properly check if std::function is empty in C++11?
...td::function has a callable target stored in it. The check is well-defined and works because of std::function::operator bool which allows for implicit conversion to bool in contexts where boolean values are required (such as the conditional expression in an if statement).
Besides, the notion of an ...
Python - Get path of root project structure
...directory as well ? Should that be correct ? I've just started with python and not sure on the best practices. Thanks.
– akskap
Aug 30 '16 at 8:20
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Uninstall all installed gems, in OSX?
There are instances where I would like to revert and uninstall all previous gem installations.
13 Answers
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Bash script to set up a temporary SSH tunnel
...ly with an ssh 'control socket'. To talk to an already-running SSH process and get it's pid, kill it etc. Use the 'control socket' (-M for master and -S for socket) as follows:
$ ssh -M -S my-ctrl-socket -fnNT -L 50000:localhost:3306 jm@sampledomain.com
$ ssh -S my-ctrl-socket -O check jm@sampledo...
Read whole ASCII file into C++ std::string [duplicate]
I need to read a whole file into memory and place it in a C++ std::string .
9 Answers
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Using usort in php with a class private function
...ate static function merchantSort($a,$b) {
return ...// the sort
}
And use an array for the second parameter:
$array = $this->someThingThatReturnAnArray();
usort($array, array('ClassName','merchantSort'));
share...
What are '$$' used for in PL/pgSQL
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The dollar signs are used for dollar quoting and are in no way specific to function definitions. It can be used to replace single quotes practically anywhere in SQL scripts.
The body of a function happens to be a string literal which has to be enclosed in single quote...
How to split a sequence into two pieces by predicate?
... span.
The first one, partition will put all "true" elements in one list, and the others in the second list.
span will put all elements in one list until an element is "false" (in terms of the predicate). From that point forward, it will put the elements in the second list.
scala> Seq(1,2,3,4)...
JSONDecodeError: Expecting value: line 1 column 1 (char 0)
... response from UTF8 to unicode, the simplejson / json .loads() method can handle UTF8 encoded data natively.
pycurl has a very archaic API. Unless you have a specific requirement for using it, there are better choices.
requests offers the most friendly API, including JSON support. If you can, repl...