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Short description of the scoping rules?

...e Local — Names assigned in any way within a function (def or lambda), and not declared global in that function Enclosing-function — Names assigned in the local scope of any and all statically enclosing functions (def or lambda), from inner to outer Global (module) — Names assigned at the to...
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How does a Breadth-First Search work when looking for Shortest Path?

I've done some research, and I seem to be missing one small part of this algorithm. I understand how a Breadth-First Search works, but I don't understand how exactly it will get me to a specific path, as opposed to just telling me where each individual node can go. I guess the easiest way to explain...
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Best design for a changelog / auditing database table? [closed]

... Who the heck created/updated/deleted a record with ID=X in the table Foo and when? So, in order to be able to answer such questions quickly (using SQL), we ended up having two additional columns in the audit table object type (or table name) object ID That's when design of our audit log reall...
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Spring Expression Language (SpEL) with @Value: dollar vs. hash ($ vs. #)

... ${...} . Furthermore, when I started with SpEL I was told to use ${...} and it works fine. 4 Answers ...
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NSUserDefaults not cleared after app uninstall on simulator

...eleted when you delete them from a physical device running iOS8. A quick and annoying solution for now is to click, iOS Simulator -> Reset Content and Settings. Xcode 9.2 with Simulator 10 still presents this issue. Menu option is now Hardware .. Erase All Content and Settings I submitted a b...
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In HTML5, should the main navigation be inside or outside the element?

...e's masthead <header> element. For websites having both secondary and main navigation, it seems common to include the secondary navigation as a <nav> element inside the masthead <header> element with the main navigation as a <nav> element outside the masthead <he...
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Google MAP API Uncaught TypeError: Cannot read property 'offsetWidth' of null

...t exist. Double-check that your map Id matches in your initialize function and your HTML or this same error may be thrown. In other words, make sure your IDs match up. ;) share | improve this answ...
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How to print a int64_t type in C

C99 standard has integer types with bytes size like int64_t. I am using the following code: 6 Answers ...
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Pythonic way to check if a file exists? [duplicate]

Which is the preferred way to check if a file exists and if not create it? 5 Answers 5...
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Unable to type in Visual Studio

...es on the machine. I have restarted Visual Stuido, restarted the computer and still am unable to edit the files. Any ideas? ...