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Better way to check variable for null or empty string?

...solves it, I'm not sure if it's simpler. +1 anyway – Allain Lalonde Dec 19 '08 at 15:36 4 Since O...
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Ruby send vs __send__

I understand the concept of some_instance.send but I'm trying to figure out why you can call this both ways. The Ruby Koans imply that there is some reason beyond providing lots of different ways to do the same thing. Here are the two examples of usage: ...
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Clone Object without reference javascript [duplicate]

... This is really very good reply. I got the exact solution for my problem. Thanks. – Sumit Tawal Jul 10 '15 at 12:26 ...
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UML class diagram enum

... They are simply showed like this: _______________________ | <<enumeration>> | | DaysOfTheWeek | |_____________________| | Sunday | | Monday | | Tuesday | | ... | |____________________...
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How to see the changes between two commits without commits in-between?

...question, so I have no idea why it has so many upvotes. The OP is specifically asking how NOT to get the first command you give, and the second has nothing to do with anything. – psusi Sep 4 '15 at 17:51 ...
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ERROR: Error 1005: Can't create table (errno: 121)

...nswered Sep 27 '12 at 14:39 DorvallaDorvalla 4,02722 gold badges2121 silver badges3939 bronze badges ...
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Sequelize.js: how to use migrations and sync

...rst migration" In your case, the most reliable way is to do it almost manually. I would suggest to use sequelize-cli tool. The syntax is rather plain: sequelize init ... sequelize model:create --name User --attributes first_name:string,last_name:string,bio:text This will create both model AND mi...
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How to print out the method name and line number and conditionally disable NSLog?

...lot: #ifdef DEBUG # define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__) #else # define DLog(...) #endif // ALog always displays output regardless of the DEBUG setting #define ALog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE_...
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Is it possible to print a variable's type in standard C++?

...at I'm recommending below is: template <typename T> std::string type_name(); which would be used like this: const int ci = 0; std::cout << type_name<decltype(ci)>() << '\n'; and for me outputs: int const <disclaimer> I have not tested this on MSVC. </disclai...
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Cannot create an NSPersistentStoreCoordinator with a nil model

...to "Model" as argument. But Xcode refuses to load it, but this file as actually there! I don't know, what's happening. – Darmen Amanbayev Oct 7 '13 at 5:45 ...