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Why do we have map, fmap and liftM?
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map exists to simplify operations on lists and for historical reasons (see What's the point of map in Haskell, when there is fmap?).
You might ask why we need a separate map function. Why not just do away with the current
list-only map function, and rename fmap...
What's the best manner of implementing a social activity stream? [closed]
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I have created such system and I took this approach:
Database table with the following columns: id, userId, type, data, time.
userId is the user who generated the activity
type is the type of the activity (i.e. Wrote blog post, added photo, commente...
Datatype for storing ip address in SQL Server
...s (no, not even an INT32/INT(4), the numeric textual form that we all know and love (255.255.255.255) being just the display conversion of its binary content).
If you do it this way, you will want functions to convert to and from the textual-display format:
Here's how to convert the textual displa...
Are braces necessary in one-line statements in JavaScript?
...nts could be harmful in JavaScript. I don't remember the reasoning anymore and a Google search did not help much.
20 Answe...
In Python, what happens when you import inside of a function? [duplicate]
What are the pros and cons of importing a Python module and/or function inside of a function, with respect to efficiency of speed and of memory?
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What does void* mean and how to use it?
...d *func(void* i); , what does this void* mean here for the function name and for the variable type, respectively?
10 Ans...
WebApi's {“message”:“an error has occurred”} on IIS7, not in IIS Express
I'm working with ASP.NET MVC 4 WebApi and am having a lot of fun with it running it on my local computer on IIS Express. I've configured IIS Express to serve remote machines too, and so other's in my company are using my computer as our webserver.
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Interface naming in Java [closed]
...aces:
The prefix hurts readability.
Using interfaces in clients is the standard best way to program, so interfaces names should be as short and pleasant as possible. Implementing classes should be uglier to discourage their use.
When changing from an abstract class to an interface a coding convent...
C++: const reference, before vs after type-specifier
...le, which is redundant; when dealing with const pointers both Fred const* and Fred* const are valid but different.
It's a matter of style, but I prefer using const as a suffix since it can be applied consistently including const member functions.
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Difference between maven scope compile and provided for JAR packaging
What is the difference between the maven scope compile and provided when artifact is built as a JAR? If it was WAR, I'd understand - the artifact would be included or not in WEB-INF/lib. But in case of a JAR it doesn't matter - dependencies aren't included. They have to be on classpath when thei...