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How do I convert a String object into a Hash object?
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The string created by calling Hash#inspect can be turned back into a hash by calling eval on it. However, this requires the same to be true of all of the objects in the hash.
If I start with the hash {:a => Object.new}, then its string represen...
Reset Entity-Framework Migrations
... I used IgnoreChanges on the initial migration, but now I want to delete all my migrations and start with an initial migration with all of the logic.
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How to extract the decision rules from scikit-learn decision-tree?
...sion of sklearn, because some values of tree.tree_.feature are -2 (specifically for leaf nodes).
There is no need to have multiple if statements in the recursive function, just one is fine.
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Is it expensive to use try-catch blocks even if an exception is never thrown?
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try has almost no expense at all. Instead of doing the work of setting up the try at runtime, the code's metadata is structured at compile time such that when an exception is thrown, it now does a relatively expensive operation of walking up the stack an...
In Django - Model Inheritance - Does it allow you to override a parent model's attribute?
...ld instances (at least,
not at the moment). If a base class has a field called author, you
cannot create another model field called author in any class that
inherits from that base class.
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What is the purpose of std::make_pair vs the constructor of std::pair?
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Actually, the types should be deduced at compile time without the need to specify.
– Chad
Feb 14 '12 at 1:51
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Why does MSBuild look in C:\ for Microsoft.Cpp.Default.props instead of c:\Program Files (x86)\MSBui
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Installing Microsoft Visual C++ 2010 Service Pack 1 Compiler Update for the Windows SDK 7.1 fixed the MSB4019 errors that I was getting building on Windows7 x64.
The readme of that update states that the recommended order is
Visual Studio 2010
Windows SDK 7.1...
How to read if a checkbox is checked in PHP?
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this is the really good form to do this in pure simple php. but have to note that the value of a checkbox is string on when it is activated an a inexisting value if it is checked.
– Elvis Technologies
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Preloading images with JavaScript
Is the function I wrote below enough to preload images in most, if not all, browsers commonly used today?
14 Answers
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How to fix Hibernate LazyInitializationException: failed to lazily initialize a collection of roles,
...d you probably won't want to do that there so you will need to implement a service class in front of the dao which has the @Transactional boundaries from within which you can walk the desired child entities
– jcmwright80
Apr 2 '14 at 21:32
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