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When is -XAllowAmbiguousTypes appropriate?

... should be able to follow functional dependencies in order to disambiguate all the other types used in the context, namely sup and fi. And indeed, the f -> internal functional dependency in SyntacticN uses our f to disambiguate our fi, and thereafter the f -> sig sym functional dependency in A...
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What is the point of function pointers?

...nction pointers. I guess it may be useful in some cases (they exist, after all), but I can't think of a case where it's better or unavoidable to use a function pointer. ...
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Using pickle.dump - TypeError: must be str, not bytes

..., that's why you are here. import pickle class MyUser(object): def __init__(self,name): self.name = name user = MyUser('Peter') print("Before serialization: ") print(user.name) print("------------") serialized = pickle.dumps(user) filename = 'serialized.native' with open(filename,...
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What's the difference between Git Revert, Checkout and Reset?

...the history. git reset This command is a little more complicated. It actually does a couple of different things depending on how it is invoked. It modifies the index (the so-called "staging area"). Or it changes which commit a branch head is currently pointing at. This command may alter existing h...
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Set focus on TextBox in WPF from view model

...ample? Is it a TextBox control? If yes, then you are on a wrong way. Generally speaking it's not a good idea to have any reference to UI in your ViewModel. You can ask "Why?" but this is another question to post on Stackoverflow :). The best way to track down issues with Focus is... debugging .Net ...
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How to empty/destroy a session in rails?

.../ActionController/Base.html#M000668 Resets the session by clearing out all the objects stored within and initializing a new session object. Good luck! share | improve this answer ...
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When creating a service with sc.exe how to pass in context parameters?

...ce as well as setting the start setting to auto so that it starts automatically. You can do this by specifying DisplayName= yourdisplayname and start= auto in your create statement. Here is an example: C:\Documents and Settings\Administrator> sc create asperacentral binPath= "C:\Program Files\...
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Python 3 turn range to a list

... You can just construct a list from the range object: my_list = list(range(1, 1001)) This is how you do it with generators in python2.x as well. Typically speaking, you probably don't need a list though since you can come by the value of my_list[i] more efficiently (i + 1), and...
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Using Default Arguments in a Function

...= "some other value"; } code here! } This way, you can make a call like foo('blah', null, 'non-default y value'); and have it work as you want, where the second parameter $x still gets its default value. With this method, passing a null value means you want the default value for one par...
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What does #defining WIN32_LEAN_AND_MEAN exclude exactly?

I found the explanation defining WIN32_LEAN_AND_MEAN "reduces the size of the Win32 header files by excluding some of the less frequently used APIs". Somewhere else I read that it speeds up the build process. ...