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Sanitizing strings to make them URL and filename safe?

... you'll have ugly looking URLs. So, if I were you, after lowercasing, I'd convert any 'special' characters to their equivalent (e.g. é -> e) and replace non [a-z] characters with '-', limiting to runs of a single '-' as you've done. There's an implementation of converting special characters he...
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Round to 5 (or other number) in Python

... I don't know of a standard function in Python, but this works for me: Python 2 def myround(x, base=5): return int(base * round(float(x)/base)) Python3 def myround(x, base=5): return base * round(x/base) It is easy to see why the a...
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How do I explicitly instantiate a template function?

...T] There seems to be (a lot) of confusion regarding explicit instantiation and specialization. The code I posted above deals with explicit instantiation. The syntax for specialization is different. Here is syntax for specialization: template <typename T> void func(T param) {} // definition t...
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Receive result from DialogFragment

...tFragment(this, MY_REQUEST_CODE) from the place where you show the dialog, and then when your dialog is finished, from it you can call getTargetFragment().onActivityResult(getTargetRequestCode(), ...), and implement onActivityResult() in the containing fragment. It seems like an abuse of onActivity...
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How can I check whether an array is null / empty?

I have an int array which has no elements and I'm trying to check whether it's empty. 13 Answers ...
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What is the printf format specifier for bool?

...t something like "%d" which would cause problems. The fputs, on the other hand, is a better option. – paxdiablo Oct 15 '14 at 2:40 ...
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log4j logging hierarchy order

... you will see how the log works in each level. i.e for WARN, (FATAL, ERROR and WARN) will be visible. For OFF, nothing will be visible. share | improve this answer | follow ...
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What does “O(1) access time” mean?

...een this term "O(1) access time" used to mean "quickly" but I don't understand what it means. The other term that I see with it in the same context is "O(n) access time". Could someone please explain in a simple way what these terms mean? ...
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:: (double colon) operator in Java 8

I was exploring the Java 8 source and found this particular part of code very surprising: 17 Answers ...
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int main (vooid)”? How does that work?

I recently had to type in a small C test program and, in the process, I made a spelling mistake in the main function by accidentally using vooid instead of void . ...