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What is the definition of “interface” in object oriented programming
Ok, a friend of mine go back and forth on what "interface" means in programming.
16 Answers
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How do I base64 encode (decode) in C?
I have binary data in an unsigned char variable.
I need to convert them to PEM base64 in c.
I looked in openssl library but i could not find any function.
Does any body have any idea?
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Is there a way to override class variables in Java?
The function doIt will print "dad". Is there a way to make it print "son"?
17 Answers
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Can someone explain mappedBy in JPA and Hibernate?
...one-to-many and many-to-one relations. It is a bi-directional relationship in my objects, so that I can traverse from either direction. mappedBy is the recommended way to go about it, however, I couldn't understand it. Can someone explain:
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Fluid or fixed grid system, in responsive design, based on Twitter Bootstrap
I'm getting confused about the various options in the twitter bootstrap grid , and how they go together.
5 Answers
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Ruby on Rails: Where to define global constants?
I'm just getting started with my first Ruby on Rails webapp. I've got a bunch of different models, views, controllers, and so on.
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How do I get elapsed time in milliseconds in Ruby?
... already, you can operate on Time objects as if they were numeric (or floating point) values. These operations result in second resolution which can easily be converted.
For example:
def time_diff_milli(start, finish)
(finish - start) * 1000.0
end
t1 = Time.now
# arbitrary elapsed time
t2 = T...
What are .dex files in Android?
I have some questions regarding dex files
3 Answers
3
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Is “inline” without “static” or “extern” ever useful in C99?
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Actually this excellent answer also answers your question, I think:
What does extern inline do?
The idea is that "inline" can be used in a header file, and then "extern inline" in a .c file. "extern inline" is just how you instruct the compiler which object file should contain the (ex...
What does the `forall` keyword in Haskell/GHC do?
I'm beginning to understand how the forall keyword is used in so-called "existential types" like this:
8 Answers
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