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Difference between DTO, VO, POJO, JavaBeans?
...JavaBean is a Java Object that is serializable, has a nullary constructor, and allows access to properties using getter and setter methods.
In order to function as a JavaBean class, an object class must obey certain conventions about method naming, construction, and behavior. These conventions ...
Re-raise exception with a different type and message, preserving existing information
I'm writing a module and want to have a unified exception hierarchy for the exceptions that it can raise (e.g. inheriting from a FooError abstract class for all the foo module's specific exceptions). This allows users of the module to catch those particular exceptions and handle them distinctly,...
How do Trigonometric functions work?
So in high school math, and probably college, we are taught how to use trig functions, what they do, and what kinds of problems they solve. But they have always been presented to me as a black box. If you need the Sine or Cosine of something, you hit the sin or cos button on your calculator and you'...
What can you use Python generator functions for?
I'm starting to learn Python and I've come across generator functions, those that have a yield statement in them. I want to know what types of problems that these functions are really good at solving.
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Looking for ALT+LeftArrowKey solution in zsh
...recently switched from bash to zsh, however I miss my Alt + LeftArrowKey and Alt + RightArrowKey to go back and forth a word at a time.
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How to simulate a touch event in Android?
How to simulate a touch event with Android while giving the X and Y coordinates manually?
7 Answers
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Are lists thread-safe?
...t is often suggested to use queues with multiple threads, instead of lists and .pop() . Is this because lists are not thread-safe, or for some other reason?
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Browser detection in JavaScript? [duplicate]
How do I determine the exact browser and version using JavaScript?
26 Answers
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Ruby on Rails and Rake problems: uninitialized constant Rake::DSL
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A tweet from DHH earlier. Rake .9.0 breaks Rails and several other things, you need to:
gem "rake", "0.8.7"
in your Gemfile.
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Class method differences in Python: bound, unbound and static
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In Python, there is a distinction between bound and unbound methods.
Basically, a call to a member function (like method_one), a bound function
a_test.method_one()
is translated to
Test.method_one(a_test)
i.e. a call to an unbound method. Because of that, a call to...