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What is the purpose of Rank2Types?
... Country) -> IO ()
The problem is that we could accidentally run
f (\_ -> BestAlly)
and then we'd be in big trouble! Giving f a rank 1 polymorphic type
f :: ([a] -> a) -> IO ()
doesn't help at all, because we choose the type a when we call f, and we just specialize it to Country ...
How does having a dynamic variable affect performance?
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StriplingWarriorStriplingWarrior
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What are valid values for the id attribute in HTML?
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32
Also note that if you try to write a CSS rule to target an element by ID, and the ID beings with a number, it won't work. Bummer!
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void in C# generics?
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You could simply use Object as others have suggested. Or Int32 which I have seen some use. Using Int32 introduces a "dummy" number (use 0), but at least you can't put any big and exotic object into an Int32 reference (structs are sealed).
You could also write you own "void" type:
pu...
Is there an IDictionary implementation that, on missing key, returns the default value instead of th
...falnawfal
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Why is require_once so bad to use?
...: Require: 0.81639003753662 Not Defined: 0.17906713485718 Defined is 0.63732290267944 microseconds faster.
– Travis Weston
Jun 26 '14 at 19:35
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Any reason not to use '+' to concatenate two strings?
...ucture, especially if it is growing. With list you can use list.extend(list_of_items) and list.append(item) which are much faster when concatenating stuff dynamically.
– Antti Haapala
Sep 11 '12 at 9:56
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Python Create unix timestamp five minutes in the future
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This is a somewhat undocumented behaviour ( python.org/doc/current/library/datetime.html ). Seems to be working under linux and not working...
What is the difference between class and instance attributes?
... Alex CoventryAlex Coventry
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pandas resample documentation
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B business day frequency
C custom business day frequency (experimental)
D ...