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How to copy a local Git branch to a remote repo
...he source repository (most likely, it would find refs/heads/experimental), and update the same ref (e.g. refs/heads/experimental) in origin repository with it.
If experimental did not exist remotely, it would be created.
This is the same as:
git push origin experimental:refs/heads/experimental
Crea...
Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)
... to be recursive. That means the same thread can lock the same mutex twice and won't deadlock. Of course it also needs to unlock it twice, otherwise no other thread can obtain the mutex. Not all systems supporting pthreads also support recursive mutexes, but if they want to be POSIX conform, they h...
Linq to SQL how to do “where [column] in (list of values)”
I have a function where I get a list of ids, and I need to return the a list matching a description that is associated with the id. E.g.:
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You can't specify target table for update in FROM clause
...you should only be selecting the columns you need in that innermost query, and adding a good WHERE clause to limit the results, too.
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How to record webcam and audio using webRTC and a server-based Peer connection
I would like to record the users webcam and audio and save it to a file on the server. These files would then be able to be served up to other users.
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How do I check if there are duplicates in a flat list?
...N log N) for non-hashable comparables, otherwise it's down to O(N squared) and there's nothing one can do about it:-(.
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BaseException.message deprecated in Python 2.6
...- almost no coding needed
Just inherit your exception class from Exception and pass the message as the first parameter to the constructor
Example:
class MyException(Exception):
"""My documentation"""
try:
raise MyException('my detailed description')
except MyException as my:
print my # ...
scheduleAtFixedRate vs scheduleWithFixedDelay
What's the main difference between scheduleAtFixedRate and scheduleWithFixedDelay methods of ScheduledExecutorService ?
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Programmatically find the number of cores on a machine
...;sysinfo);
int numCPU = sysinfo.dwNumberOfProcessors;
Linux, Solaris, AIX and Mac OS X >=10.4 (i.e. Tiger onwards)
int numCPU = sysconf(_SC_NPROCESSORS_ONLN);
FreeBSD, MacOS X, NetBSD, OpenBSD, etc.
int mib[4];
int numCPU;
std::size_t len = sizeof(numCPU);
/* set the mib for hw.ncpu */
mib[...
What special characters must be escaped in regular expressions?
...
Which characters you must and which you mustn't escape indeed depends on the regex flavor you're working with.
For PCRE, and most other so-called Perl-compatible flavors, escape these outside character classes:
.^$*+?()[{\|
and these inside charac...