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A monad is just a monoid in the category of endofunctors, what's the problem?
...y (which also comes with the Platform):
newtype Compose f g a = Compose { getCompose :: f (g a) }
-- | The composition of two 'Functor's is also a 'Functor'.
instance (Functor f, Functor g) => Functor (Compose f g) where
fmap f (Compose fga) = Compose (fmap (fmap f) fga)
So the natural tran...
Move assignment operator and `if (this != &rhs)`
...I would only see an issue if you were to start calling delete on pointers, etc. in your this object like you would in a normal lvaue-reference operator= method, but that sort of defeats the point of the rvalue-version ... i.e., it would seem redundant to use the rvalue version to basically do the sa...
Why does Java switch on contiguous ints appear to run faster with added cases?
...e 86)
; {section_word}
[etc.]
0x0000000002524744: add rsp,0x10
0x0000000002524748: pop rbp
0x0000000002524749: test DWORD PTR [rip+0xfffffffffde1b8b1],eax # 0x0000000000340000
; ...
Fastest way to iterate over all the chars in a String
...t are done for string sizes in multiples of two starting with 0,1,2,4,8,16 etc.
The tests are done 1,000 times per string size
The tests are shuffled into random order each time. In other words, the tests are done in random order every time they are done, over 1000 times over.
The entire test sui...
The case against checked exceptions
...se of checked exceptions. The client code is going to be full of calls to fetch row data, every one of which is going to have to use a try/catch, and for what? Are they going to report to the user that the wrong row was sought? Probably not - because whatever the UI surrounding my table view is, it ...
What are the real-world strengths and weaknesses of the many frameworks based on backbone.js? [close
...ents ( such as the tab views, the toolbars, buttons, forms, fields, grids, etc ) will automatically use Twitter Bootstrap compatible markup and CSS class conventions.
Uses the Grid system for layout, and responds to most of the bootstrap base css classes in an intelligent way
Luca.Viewport and Gri...
What's the difference between passing by reference vs. passing by value?
...00.
Depending on the language's architecture or the type (class, struct, etc.) of your object, you would be either transferring "John" or 0x7fd5d258dd00
Passing "John" is known as passing by value.
Passing 0x7fd5d258dd00 is known as passing by reference. Anyone who is pointing to this memory loca...
Should a Netflix or Twitter-style web service use REST or SOAP? [closed]
... if you're trying to get a map, it's a lot easier to just build a URL and fetch image bytes from that URL than it is to bother with encapsulating it into a SOAP message. But yes, I will agree that if the point of the web service is to transfer some strongly-typed object in a domain object model, SO...
Unicode equivalents for \w and \b in Java regular expressions?
...change the API from what it is in this alpha prototype, clean up the code, etc. But it helps us out tremendously, and we figure it will help others, too. I really wish Sun would do something about their library, but Oracle inspires no confidence.
– tchrist
Nov ...
C++ project organisation (with gtest, cmake and doxygen)
...nd TEST_F. Value- or Type-parameterised tests using TEST_P, TYPED_TEST_P, etc. aren't handled at all.
The problem doesn't have an easy solution that I know of. The most robust way to get a list of gtest cases is to execute the test exe with the flag --gtest_list_tests. However, this can only be ...