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Good examples of Not a Functor/Functor/Applicative/Monad?

...ariant functor out of it, but not a (covariant) functor. Try writing fmap and you'll fail. Note that the contravariant functor version is reversed: fmap :: Functor f => (a -> b) -> f a -> f b contramap :: Contravariant f => (a -> b) -> f b -> f a A type constr...
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What's the significance of Oct 12 1999? [closed]

.... The dev who wrote THAT line of code, we think, is gone. We asked The Gu, and he wasn't sure. Stefan Schackow, from the team, said, after speaking with Manu Vasandani: "The ASP.NET developers were being chased by a pack of feral ninjas on fire and thus were under intense pressure to com...
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What is the meaning of CTOR?

... It's just shorthand for "constructor" - and it's what the constructor is called in IL, too. For example, open up Reflector and look at a type and you'll see members called .ctor for the various constructors. ...
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Delete/Reset all entries in Core Data?

...ly. The programmatic way for iterating through each entity is both slower and prone to error. The use for doing it that way is if you want to delete some entities and not others. However you still need to make sure you retain referential integrity or you won't be able to persist your changes. Ju...
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Read Post Data submitted to ASP.Net Form

I have a working login form in an asp.net application. Standard stuff with a username and password text box and a button to process the login. Works fine. ...
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Resetting generator object in Python

...ls.tee) - this uses lazy load strategy, so items to list copied only on demand – Dewfy Aug 13 '09 at 13:23 11 ...
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How to present popover properly in iOS 8

... Okay, A housemate took a look at it and figured it out: func addCategory() { var popoverContent = self.storyboard?.instantiateViewControllerWithIdentifier("NewCategory") as UIViewController var nav = UINavigationController(rootViewController: popover...
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C/C++ NaN constant (literal)?

... @MikeSeymour Not by the language standard but as far as I know it should work if the compiler claims to be IEEE compliant. – Pixelchemist May 22 '13 at 12:23 ...
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Remove querystring from URL

...ystring exists, that requires a little bit more: function stripQueryStringAndHashFromPath(url) { return url.split("?")[0].split("#")[0]; } EDIT @caub (originally @crl) suggested a simpler combo that works for both query string and hash (though it uses RegExp, in case anyone has a problem with ...
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With Spring can I make an optional path variable?

...es, in my opinion. The combinatorial proliferation can quickly get out of hand. – skaffman Feb 5 '11 at 11:40 9 ...