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Is it secure to store passwords as environment variables (rather than as plain text) in config files
...aintext files, but likely are worse. With plaintext files you can set the read permissions on the files/directories to protect them. IIRC for environment variables, they live in the memory space for the shell process, so an enterprising cracker could scan that space looking for them.
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Using tags in the with other HTML
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As others have already mentioned, HTML 4 requires the <style> tag to be placed in the <head> section (even though most browsers allow <style> tags within the body).
However, HTML 5 includes the scoped attribute (see update ...
Any reason to prefer getClass() over instanceof when generating .equals()?
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exactly that came to my mind when i read the josh bloch quote above. +1 :)
– Johannes Schaub - litb
Feb 27 '09 at 21:43
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How to create the most compact mapping n → isprime(n) up to a limit N?
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True, but there are better storage methods than reading from a file in a linear fashion. If you really want to read from a stored set of pre-generated primes, try a more complicated data structure that speeds up the problem.
– CogitoErgoCogitoSum
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What is the standard naming convention for html/css ids and classes?
... Use the one that you think is best - the one that looks nicest/easiest to read for you, as well as easiest to type because you'll be using it a lot. For example, if you've got your underscore key on the underside of the keyboard (unlikely, but entirely possible), then stick to hyphens. Just go with...
How do I iterate over a range of numbers defined by variables in Bash?
...something: Bash allows for ((expr;expr;expr)) constructs. Since I've never read the whole man page for Bash (like I've done with the Korn shell (ksh) man page, and that was a long time ago), I missed that.
So,
typeset -i i END # Let's be explicit
for ((i=1;i<=END;++i)); do echo $i; done
seems...
Analyze audio using Fast Fourier Transform
...In an FFT, you only can measure frequencies up to half your sample points. Read these links on the Nyquist Frequency and Nyquist-Shannon Sampling Theorem if you are a glutton for punishment and need to know why, but the basic result is that your lower frequencies are going to be replicated or aliase...
Queue.Queue vs. collections.deque
I need a queue which multiple threads can put stuff into, and multiple threads may read from.
7 Answers
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What exceptions should be thrown for invalid or unexpected parameters in .NET?
...pects the consuming developer to be proactive or defensive and to actually read the documentation in detail. I would opt for a friendly/descriptive error over good documentation since the end-user has the chance of seeing one of them and not the other; there's a better chance of having an end-user ...
How to avoid explicit 'self' in Python?
... functions require no knowledge of the actual class
# how hard are they to read and realize that "members" are used?
B.__init__ = B_init
B.__str__ = B_str
print B()
# <The answer is 42.>
Remember, both of these examples are extreme and you won't see them every day, nor am I suggesting you ...