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How to generate a random string in Ruby
I'm currently generating an 8-character pseudo-random uppercase string for "A" .. "Z":
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Clustered vs Non-Clustered
My lower level knowledge of SQL (Server 2008) is limited, and is now being challanged by our DBAs. Let me explain (I have mentioned obvious statements in the hope that I am right, but if you see something wrong, please tell me) the scenario:
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Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
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How to add a local repo and treat it as a remote repo
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Difference between Repository and Service Layer?
In OOP Design Patterns, what is the difference between the Repository Pattern and a Service Layer?
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How to implement has_many :through relationships with Mongoid and mongodb?
Using this modified example from the Rails guides , how does one model a relational "has_many :through" association using mongoid?
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Covariance, Invariance and Contravariance explained in plain English?
Today, I read some articles about Covariance, Contravariance (and Invariance) in Java. I read the English and German Wikipedia article, and some other blog posts and articles from IBM.
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How to create a custom attribute in C#
I have tried lots of times but still I am not able to understand the usage of custom attributes (I have already gone through lots of links).
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Why do C and C++ compilers allow array lengths in function signatures when they're never enforced?
This is what I found during my learning period:
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Node.js / Express.js - How does app.router work?
Before I ask about app.router I think I should explain at least what I think happens when working with middleware. To use middleware, the function to use is app.use() . When the middleware is being executed, it will either call the next middleware by using next() or make it so no more middlewar...