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Calling virtual functions inside constructors
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What optimizations can GHC be expected to perform reliably?
GHC has a lot of optimizations that it can perform, but I don't know what they all are, nor how likely they are to be performed and under what circumstances.
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Iterate over the lines of a string
I have a multi-line string defined like this:
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What is the difference between a definition and a declaration?
The meaning of both eludes me.
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Should I instantiate instance variables on declaration or in the constructor?
Is there any advantage for either approach?
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Best practice for partial updates in a RESTful service
I am writing a RESTful service for a customer management system and I am trying to find the best practice for updating records partially. For example, I want the caller to be able to read the full record with a GET request. But for updating it only certain operations on the record are allowed, like ...
Cleaner way to update nested structures
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Why does this code using random strings print “hello world”?
The following print statement would print "hello world".
Could anyone explain this?
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Android image caching
How can I cache images after they are downloaded from web?
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Understanding the map function
Apply function to every item of iterable and return a list of the results. If additional iterable arguments are passed, function must take that many arguments and is applied to the items from all iterables in parallel.
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