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What is the fastest or most elegant way to compute a set difference using Javascript arrays?
Let A and B be two sets. I'm looking for really fast or elegant ways to compute the set difference ( A - B or A \B , depending on your preference) between them. The two sets are stored and manipulated as Javascript arrays, as the title says.
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C/C++ line number
... of debugging purposes, can I get the line number in C /C++ compilers?
(standard way or specific ways for certain compilers)
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What to do Regular expression pattern doesn't match anywhere in string?
...uld be impossible with regex! But you are only matching what's in one tag, and that's perfectly regular.
Here's the problem, though. You can't do it with just one regex... you need to do one match to capture an <input> tag, then do further processing on that. Note that this will only work if ...
How to read the value of a private field from a different class in Java?
I have a poorly designed class in a 3rd-party JAR and I need to access one of its private fields. For example,
why should I need to choose private field is it necessary?
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How do disable paging by swiping with finger in ViewPager but still be able to swipe programmaticall
I have ViewPager and below it I have 10 buttons. By clicking on button, for example #4, the pager goes immediately to page #4 by mPager.setCurrentItem(3); . But, I want to disable the paging by swiping with finger horizontally. Thus, the paging is done ONLY by clicking on the buttons.
So, how I ...
UTF-8: General? Bin? Unicode?
...pares as equal to combinations of other characters. For example, in German and some other languages “ß” is equal to “ss”. utf8_unicode_ci also supports contractions and ignorable characters. utf8_general_ci is a legacy collation that does not support expansions, contractions, or ignorable ...
What's the absurd function in Data.Void useful for?
...little bit hard, since Haskell is non strict. The general use case is to handle impossible paths. For example
simple :: Either Void a -> a
simple (Left x) = absurd x
simple (Right y) = y
This turns out to be somewhat useful. Consider a simple type for Pipes
data Pipe a b r
= Pure r
| A...
How to keep a git branch in sync with master
...git checkout master
git merge mobiledevicesupport
git push origin master
and thats it.
the assumption here is that mobilexxx is a topic branch with work that isn't ready to go into your main branch yet. So only merge into master when mobiledevicesupport is in a good place
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How can I make a weak protocol reference in 'pure' Swift (without @objc)
...ere). This seems to be bug. The only solution I have found is to use @objc and eliminate all Swift data types from the protocol.
– Jim T
Jul 3 '14 at 22:32
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Linux command (like cat) to read a specified quantity of characters
Is there a command like cat in linux which can return a specified quantity of characters from a file?
9 Answers
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