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How get integer value from a enum in Rails?
I have a enum in my Model that corresponds to column in the database.
5 Answers
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java.nio.file.Path for a classpath resource
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This one works for me:
return Paths.get(ClassLoader.getSystemResource(resourceName).toURI());
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When should I use genetic algorithms as opposed to neural networks? [closed]
Is there a rule of thumb (or set of examples) to determine when to use genetic algorithms as opposed to neural networks (and vice-versa) to solve a problem?
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Get the closest number out of an array
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downside is that it only works if reduce's callback is called from the same scope as the declared vars. Since you can't pass goal to reduce, you must reference it from a global scope.
– 7yl4r
Feb 6 '15 at 15:09
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Why '&&' and not '&'?
... most cases, && and || are preferred over & and | because the former are short-circuited, meaning that the evaluation is canceled as soon as the result is clear.
Example:
if(CanExecute() && CanSave())
{
}
If CanExecute returns false, the complete expression will be false, r...
How to parse JSON in Python?
...urrently receiving a JSON message in python which I need to get bits of information out of. For the purposes of this, let's set it to some simple JSON in a string:
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How to sort a list of strings numerically?
I know that this sounds trivial but I did not realize that the sort() function of Python was weird. I have a list of "numbers" that are actually in string form, so I first convert them to ints, then attempt a sort.
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ACE vs Boost vs POCO [closed]
I have been working with the Boost C++ Libraries for quite some time. I absolutely love the Boost Asio C++ library for network programming. However I was introduced to two other libraries: POCO and Adaptive Communication Environment (ACE) framework . I would like to know the good and bad of ...
Calling constructors in c++ without new
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Both lines are in fact correct but do subtly different things.
The first line creates a new object on the stack by calling a constructor of the format Thing(const char*).
The second one is a bit more complex. It essentially does the following...
How to create index in Entity Framework 6.2 with code first
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Well 26.10.2017 Entity Framework 6.2 was officially released.
It includes a possibility to define indexes with ease via Fluent API. Ho it is to use was already announced in the beta of 6.2.
Now you can use the HasIndex() method, followed by IsUnique() i...