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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...
Is “IF” expensive?
...can't, for the life of me, remember what exactly our teacher said that day and I'm hoping you would probably know.
16 Answe...
Coding Conventions - Naming Enums
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Enums are classes and should follow the conventions for classes. Instances of an enum are constants and should follow the conventions for constants. So
enum Fruit {APPLE, ORANGE, BANANA, PEAR};
There is no reason for writing FruitEnum any ...
Real world example about how to use property feature in python?
... interested in how to use @property in Python. I've read the python docs and the example there, in my opinion, is just a toy code:
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Checking in of “commented out” code [closed]
Ok, here is something that has caused some friction at my current job and I really didn't expect it to. Organized in house software development is a new concept here and I have drawn up a first draft of some coding guidelines.
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Find the host name and port using PSQL commands
I have PSQL running, and am trying to get a perl application connecting to the database. Is there a command to find the current port and host that the database is running on?
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what’s the difference between Expires and Cache-Control headers?
What’s the difference between Expires and Cache-Control headers?
7 Answers
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Import .bak file to a database in SQL server
...ane (Object Explorer)
Click Restore Database...
Choose Device, click ..., and add your .bak file
Click OK, then OK again
Done.
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What do I need to do to get Internet Explorer 8 to accept a self signed certificate?
...Options.
Select Security➞Trusted sites➞Sites.
Confirm the URL matches, and click “Add” then “Close”.
Close the “Internet Options” dialog box with either “OK” or “Cancel”.
Refresh the current page.
When told “There is a problem with this website's security certificate.”, c...
How to prevent ifelse() from turning Date objects into numeric objects
... to manipulate a date vector. I expected the result to be of class Date , and was surprised to get a numeric vector instead. Here is an example:
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