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Can “this” ever be null in Java?
...thod is called right after the variable is being null-ified from another thread. The actual call goes through even if the variable is null, and it crashes when it tries to read an instance member :)
– Adrian Crețu
Sep 6 '16 at 15:08
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A monad is just a monoid in the category of endofunctors, what's the problem?
...l formulation of a monoid, × means the cartesian product of sets. You can read more about that here: en.wikipedia.org/wiki/Cartesian_product, but the basic idea is that an element of S × T is a pair (s, t), where s ∈ S and t ∈ T. So the signature of the monoidal product • : S × S -> S in...
What is the Python equivalent of static variables inside a function?
...e searching for possibility to create static function variables, so this thread is still "alive" :)
– binaryLV
Aug 9 '12 at 6:30
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Add params to given URL in Python
Suppose I was given a URL.
It might already have GET parameters (e.g. http://example.com/search?q=question ) or it might not (e.g. http://example.com/ ).
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Is it possible to determine whether ViewController is presented as Modal?
...ngViewController
The view controller that presented this view controller. (read-only)
@property(nonatomic, readonly) UIViewController *presentingViewController
Discussion
If the view controller that received this message is presented by another view controller, this property holds the view contr...
How do I search an SQL Server database for a string?
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It's a great must-have tool for any DBA or database developer - did I already mention it's absolutely free to use for any kind of use??
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follo...
When does System.gc() do something?
...m.gc() via the java argument -XX:+DisableExplicitGC.
I'd highly recommend reading through the documents available at Java HotSpot Garbage Collection for more in depth details about garbage collection.
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What is the difference between . (dot) and $ (dollar sign)?
...anything that comes before.
For example, let's say you've got a line that reads:
putStrLn (show (1 + 1))
If you want to get rid of those parentheses, any of the following lines would also do the same thing:
putStrLn (show $ 1 + 1)
putStrLn $ show (1 + 1)
putStrLn $ show $ 1 + 1
The primary pu...
Import package.* vs import package.SpecificType [duplicate]
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I was going to post a link to your article (which I read yesterday), but I thought you'd probably like to do it yourself. :)
– Michael Myers♦
Oct 9 '08 at 18:52
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C# 4.0 optional out/ref arguments
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As already mentioned, this is simply not allowed and I think it makes a very good sense.
However, to add some more details, here is a quote from the C# 4.0 Specification, section 21.1:
Formal parameters of constructors, method...