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generate model using user:references vs user_id:integer

... how does rails know that user_id is a foreign key referencing user? Rails itself does not know that user_id is a foreign key referencing user. In the first command rails generate model Micropost user_id:integer it only adds a column user_i...
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Why is Go so slow (compared to Java)?

...fically, the goroutine scheduler isn't pre-emptive). Beyond that, I don't know Google's plans, whether the g compilers will ever be fiercely optimising, or if only gccgo will. – Steve Jessop Apr 24 '10 at 17:46 ...
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Not able to type in textfield in iphone simulator using Mac Keyboard?

...me once. Then keyboard stopped working for me again not too long after and now this doesn't work. (Simulator v10.0, Xcode 9.2) – Ryan H. Jan 8 '18 at 15:35 add a comment ...
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Mockito.any() pass Interface with Generics

...gument or type parameter because of enhanced type inference. The compiler now knows from the target type (the type of the method argument) that you actually mean Matchers.<AsyncCallback<ResponseX>>any(), which is the pre-Java 8 solution. ...
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Difference between socket and websocket?

...kets in their implementation. Websockets are based on a standard protocol (now in final call, but not yet final) that defines a connection "handshake" and message "frame." The two sides go through the handshake procedure to mutually accept a connection and then use the standard message format ("fram...
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How to format numbers? [duplicate]

... max="5" step="1" value="2" title="number of decimal places?" /> Now the other version, without rounding. This takes a different route and attempts to avoid mathematical calculation (as this can introduce rounding, or rounding errors). If you don't want rounding, then you are only dealing...
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'printf' vs. 'cout' in C++

...s way better than printf, even if the question just asked for differences. Now, there is a difference - std::cout is C++, and printf is C (however, you can use it in C++, just like almost anything else from C). Now, I'll be honest here; both printf and std::cout have their advantages. Real differen...
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Faster way to develop and test print stylesheets (avoid print preview every time)?

This is my process right now: 10 Answers 10 ...
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What happens if you don't commit a transaction to a database (say, SQL Server)?

...s state. the problem was that I was getting an error when I try to commit. now I closed the connection and it all worked. – Charbel Feb 4 '11 at 11:49 ...
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Difference between OData and REST web services

... UPDATE Warning, this answer is extremely out of date now that OData V4 is available. I wrote a post on the subject a while ago here. As Franci said, OData is based on Atom Pub. However, they have layered some functionality on top and unfortunately have ignored some of the ...