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How to call an external command?
How do you call an external command (as if I'd typed it at the Unix shell or Windows command prompt) from within a Python script?
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How does password salt help against a rainbow table attack?
...that contains hundreds of usernames and passwords. Without a salt, I could compute "md5(attempt[0])", and then scan through the file to see if that hash shows up anywhere. If salts are present, then I have to compute "md5(salt[a] . attempt[0])", compare against entry A, then "md5(salt[b] . attempt[0...
What are enums and why are they useful?
...n").
If you use enums instead of integers (or String codes), you increase compile-time checking and avoid errors from passing in invalid constants, and you document which values are legal to use.
BTW, overuse of enums might mean that your methods do too much (it's often better to have several sepa...
Find location of a removable SD card
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edited Jun 20 at 9:12
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answered Apr 17 '11 at 17:30
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How do I trim leading/trailing whitespace in a standard way?
...hitespace from a string in C? I'd roll my own, but I would think this is a common problem with an equally common solution.
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How to save/restore serializable object to/from file?
I have a list of objects and I need to save that somewhere in my computer. I have read some forums and I know that the object has to be Serializable . But it would be nice if I can get an example. For example if I have the following:
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SQL Server insert if not exists best practice
I have a Competitions results table which holds team member's names and their ranking on one hand.
8 Answers
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How to make git mark a deleted and a new file as a file move?
...d to follow Hank Gay’s advice and do the move and modify in two separate commits.
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Constructor function vs Factory functions
...here
return obj;
}
Of course you can make factory functions much more complicated than that simple example.
One advantage to factory functions is when the object to be returned could be of several different types depending on some parameter.
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python max function using 'key' and lambda expression
I come from OOP background and trying to learn python.
I am using the max function which uses a lambda expression to return the instance of type Player having maximum totalScore among the list players .
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