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When should we use mutex and when should we use semaphore
...l
/* Task 2 - Consumer */
sema_wait(&sem); // Wait for signal
See http://www.netrino.com/node/202 for further explanations
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How to get a Docker container's IP address from the host
...n. Maybe provide two examples clearly labelled Linux and Windows. I literally just typed the example, checked the docs which also uses single quotes and then Googled the error. I'm sure I'm not alone.
– Wyck
Apr 15 '19 at 18:42
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Convert UTC datetime string to local datetime
... this. The dateutil.zoneinfo module I was showing previously is used internally by the tz module as a fall back if it can't locate the system's zoneinfo DB. If you look inside the library you'll see that there's a zoneinfo DB tarball in the package that it uses if it can't find your system's DB. My...
Case-insensitive string comparison in C++ [closed]
...case-insensitive string comparison in C++ without transforming a string to all uppercase or all lowercase?
30 Answers
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How do I get the color from a hexadecimal color code using .NET?
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Here there is a previous version this answer in so: http://stackoverflow.com/a/784852/2721611
– Mojtaba Rezaeian
Oct 24 '15 at 18:21
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Is it possible to use argsort in descending order?
... this method is that ids is a view of avgDists:
>>> ids.flags
C_CONTIGUOUS : False
F_CONTIGUOUS : False
OWNDATA : False
WRITEABLE : True
ALIGNED : True
UPDATEIFCOPY : False
(The 'OWNDATA' being False indicates this is a view, not a copy)
Another way to do this is something ...
find() with nil when there are no records
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Yes, just do:
Challenge.find_by_id(10)
For Rails 4 and 5:
Challenge.find_by(id: 10)
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How to create an android app using HTML 5
...pps for almost any smartphone platform (Android, iOS,...) using Phonegap. (http://www.phonegap.com)
It is an open source framework that exposes native capabilities to a web view, so that you can do anything a native app can do.
This is very suitable for cross platform development if you're not bu...
What are CN, OU, DC in an LDAP search?
...N = Common Name
OU = Organizational Unit
DC = Domain Component
These are all parts of the X.500 Directory Specification, which defines nodes in a LDAP directory.
You can also read up on LDAP data Interchange Format (LDIF), which is an alternate format.
You read it from right to left, the right-m...
How to check if there exists a process with a given pid in Python?
... print("a process with pid %d does not exist" % pid)
For reference:
https://pypi.python.org/pypi/psutil
https://github.com/giampaolo/psutil
http://pythonhosted.org/psutil/#psutil.pid_exists
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