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What does the `forall` keyword in Haskell/GHC do?
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Let's start with a code example:
foob :: forall a b. (b -> b) -> b -> (a -> b) -> Maybe a -> b
foob postProcess onNothin onJust mval =
postProcess val
where
val :: b
val = maybe onNothin onJust m...
What is std::move(), and when should it be used?
...a Page on C++11 R-value references and move constructors
In C++11, in addition to copy constructors, objects can have move constructors.
(And in addition to copy assignment operators, they have move assignment operators.)
The move constructor is used instead of the copy constructor, if the object ...
What is best tool to compare two SQL Server databases (schema and data)? [duplicate]
...ely essential to our business - good stuff.
– Mark Brittingham
Mar 26 '09 at 12:23
12
Expensive? ...
strdup() - what does it do in C?
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Exactly what it sounds like, assuming you're used to the abbreviated way in which C and UNIX assigns words, it duplicates strings :-)
Keeping in mind it's actually not part of the ISO C standard itself(a) (it's a POSIX thing), it's effec...
Is using Random and OrderBy a good shuffle algorithm?
I have read an article about various shuffle algorithms over at Coding Horror . I have seen that somewhere people have done this to shuffle a list:
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When is std::weak_ptr useful?
...hat if that object is in use and some other code holds a strong pointer to it? If the cache gets rid of its only pointer to the object, it can never find it again. So the cache keeps a weak pointer to objects that it needs to find if they happen to stay in memory.
This is exactly what a weak pointe...
What does the “yield” keyword do?
What is the use of the yield keyword in Python, and what does it do?
42 Answers
42
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Is there a C++ gdb GUI for Linux? [closed]
Briefly: Does anyone know of a GUI for gdb that brings it on par or close to the feature set you get in the more recent version of Visual C++?
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HTML minification? [closed]
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Perhaps try HTML Compressor, here's a before and after table showing what it can do (including for Stack Overflow itself):
It features many selections for optimizing your pages up to and including script minimizing (ompressor, Google Closure Compiler, your own compressor) where it would be safe....
Android Game Keeps Getting Hacked [closed]
...gh this several times now, we release a game (for cheap) and someone hacks it and puts it up on a mirror. We setup Google Alerts for all our apps, so we get told daily who's doing the hacking. So far, we have implemented the licensing service as Google has suggested, our salt is randomly made each...