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What is the difference between Scala's case class and class?
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They aren't instances of Product1, Product2, etc., however.
– Jean-Philippe Pellet
Jan 13 '11 at 16:43
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In C++, what is a virtual base class?
...l (e.g. typedef, member variable, member function, cast to the base class, etc.). This really is a multiple inheritance issue, an issue that users should be aware to use multiple inheritance correctly, instead of going the Java way and conclude "Multiple inheritance is 100% evil, let's do that with ...
How to check if a value exists in an array in Ruby
...ED_METHODS = Set[:to_s, :to_i, :upcase, :downcase
# etc
]
def foo(what)
raise "Not allowed" unless ALLOWED_METHODS.include?(what.to_sym)
bar.send(what)
end
A quick test reveals that calling include? on a 10 element Set is about 3.5x faster than cal...
Why do we have map, fmap and liftM?
...o-block rather than fmap because it fits in better with when I use liftM2, etc. as well.
– ivanm
Sep 18 '11 at 22:39
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What is the function __construct used for?
...after it has been created, and is a good place to put initialisation code, etc.
class Person {
public function __construct() {
// Code called for each new Person we create
}
}
$person = new Person();
A constructor can accept parameters in the normal manner, which are passed whe...
Permission denied (publickey) when deploying heroku code. fatal: The remote end hung up unexpectedly
... On Windows 7, I had to do this on git bash command prompt in order to run ssh-keygen. thanks.
– Rots
Jun 27 '13 at 9:47
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Splitting a string into chunks of a certain size
...ut string, chunkSize == 0, input string length not divisible by chunkSize, etc.). The original question doesn't specify any requirements for these edge cases and in real life the requirements might vary so they are out of scope of this answer.
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Use IntelliJ to generate class diagram
.... > Tools > Diagrams and check what you want (E.g.: Fields, Methods, etc.)
P.S.: You need IntelliJ IDEA Ultimate, because this feature is not supported in Community Edition. If you go to File > Settings... > Plugins, you can see that there is not UML Support plugin in Community Editio...
Concept of void pointer in C programming
...guess" the type of object a void* pointer points at. Something similar to getClass() simply doesn't exist, since this information is nowhere to be found. For that reason, the kind of "generic" you are looking for always comes with explicit metainformation, like the int b in your example or the forma...
Why does DEBUG=False setting make my django Static Files Access fail?
...so far - specified db settings, configured static directories, urls, views etc. But trouble started sneaking in the moment I wanted to render my own beautiful and custom 404.html and 500.html pages.
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