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Best way to build a Plugin system with Java
...implement some kind of sandboxing so that the plugin is restricted in what it can and can not do. I have created a small test application (and blogged about it) that consists of two plugins, one of which is denied access to local resources.
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puts vs logger in rails rake tasks
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Put this in application.rb, or in a rake task initialize code
if defined?(Rails) && (Rails.env == 'development')
Rails.logger = Logger.new(STDOUT)
end
This is Rails 3 code. Note that this will override logging to development.log. If you want both STDOUT and de...
How to run Django's test database only in memory?
My Django unit tests take a long time to run, so I'm looking for ways to speed that up. I'm considering installing an SSD , but I know that has its downsides too. Of course, there are things I could do with my code, but I'm looking for a structural fix. Even running a single test is slow since the ...
Understanding NSRunLoop
...or what is NSRunLoop ? so as I know NSRunLoop is a something connected with NSThread right? So assume I create a Thread like
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What's the difference between lists and tuples?
...tructure, lists have order.
Using this distinction makes code more explicit and understandable.
One example would be pairs of page and line number to reference locations in a book, e.g.:
my_location = (42, 11) # page number, line number
You can then use this as a key in a dictionary to store ...
Using printf with a non-null terminated string
Suppose you have a string which is NOT null terminated and you know its exact size, so how can you print that string with printf in C? I recall such a method but I can not find out now...
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How to check that a string is a palindrome using regular expressions?
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The answer to this question is that "it is impossible". More specifically, the interviewer is wondering if you paid attention in your computational theory class.
In your computational theory class you learned about finite state machines. A finite state machine ...
How to cache data in a MVC application
...s();
Cache["names"] = names;
}
return names;
}
A bit simplified but I guess that would work. This is not MVC specific and I have always used this method for caching data.
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Can you split a stream into two streams?
...can't get two Streams out of one; this doesn't make sense -- how would you iterate over one without needing to generate the other at the same time? A stream can only be operated over once.
However, if you want to dump them into a list or something, you could do
stream.forEach((x) -> ((x == 0) ...
How to convert a byte array to a hex string in Java?
I have a byte array filled with hex numbers and printing it the easy way is pretty pointless because there are many unprintable elements. What I need is the exact hexcode in the form of: 3a5f771c
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