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How to replace multiple white spaces with one white space
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Why is no one using make for Java?
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Describe the architecture you use for Java web applications? [closed]
...sines model knowledge, and the DAO's do relatively simple CRUD work.
Some more complicated query stuff is handled by more complicated queries in the backend for performance reasons.
Advantages of using Spring in our case is that we can have country/language dependant instances, which are behind a ...
Algorithm to compare two images
... version of the other, therefore scaling the resolution down might provide more accurate results.
Consider scanning various prospective areas of the image that could represent zoomed portions of the image and various positions and rotations. It starts getting tricky if one of the images are a skew...
Task vs Thread differences [duplicate]
... a separate thread, rather than executing on the thread pool etc.
Task is more than just an abstraction of "where to run some code" though - it's really just "the promise of a result in the future". So as some different examples:
Task.Delay doesn't need any actual CPU time; it's just like setting...
When should I mock?
... This answer is too radical. Unit tests can and should exercise more than a single method, as long as it all belongs to the same cohesive unit. Doing otherwise would require way too much mocking/faking, leading to complicated and fragile tests. Only the dependencies that don't really belo...
How to set default values in Rails?
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"Correct" is a dangerous word in Ruby. There's usually more than one way to do anything. If you know you'll always want that default value for that column on that table, setting them in a DB migration file is the easiest way:
class SetDefault < ActiveRecord::Migration
def ...
When to use an assertion and when to use an exception
..., you can use them almost everywhere and I'm using this rule of thumb: the more an assertion statement looks stupid, the more valuable it is and the more information it embeds. When debugging a program that does not behave the right way, you will surely check the more obvious failure possibilities b...