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Storing JSON in database vs. having a new column for each key

...ing user related data in my table - I have 2 columns - uid (primary key) and a meta column which stores other data about the user in JSON format. ...
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Is Fortran easier to optimize than C for heavy calculations?

...ode that has aliasing is not valid Fortran, but it is up to the programmer and not the compiler to detect these errors. Thus Fortran compilers ignore possible aliasing of memory pointers and allow them to generate more efficient code. Take a look at this little example in C: void transform (float *...
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RESTfully design /login or /register resources?

I was designing a web app and then stopped to think about how my api should be designed as a RESTful web service. For now, most of my URI's are generic and might apply to various web apps: ...
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How to estimate a programming task if you have no experience in it [closed]

...ing too long an estimate. Unanticipated problems occur, priorities change, and requirements are "updated". Even if you don't use all the time you asked for, you will have more testing time, or can release "early". I've always been far too optimistic in my estimates, and it can put a lot of stress i...
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Possible reason for NGINX 499 error codes

... Its happens on my Angular APP if the user closes the tab and my API requests does not get completed. – Vivek Saurabh Jun 26 at 7:20 ...
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Understanding the basics of Git and GitHub [closed]

I don't fully understand the purpose of using Git or Github; I know it helps to keep track of your changes and it's helpful for people collaborating with other people, but I don't collaborate with anybody so I don't know if this would be helpful for me. ...
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List of all index & index columns in SQL Server DB

... There are two "sys" catalog views you can consult: sys.indexes and sys.index_columns. Those will give you just about any info you could possibly want about indices and their columns. EDIT: This query's getting pretty close to what you're looking for: SELECT TableName = t.name, ...
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When and why should I use fragments in Android applications? [duplicate]

... the different parts of my applications to have their own special behavior and UI, and I don't know how fragments can help. In most cases, I think it is quicker to create 2 different activities (e.g., 1 for tablets and 1 for handsets), and to share the common behaviors and events in a third class. ...
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What is the dependency inversion principle and why is it important?

What is the dependency inversion principle and why is it important? 16 Answers 16 ...
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When to use Hadoop, HBase, Hive and Pig?

...o provides us storage, but in a fault tolerant manner with high throughput and lower risk of data loss (because of the replication). But, being a FS, HDFS lacks random read and write access. This is where HBase comes into picture. It's a distributed, scalable, big data store, modelled after Google's...