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Explanation of the UML arrows
I have recently been studying UML and drawing simple diagrams with ordinary plain arrows between classes, but I know it's not enough. There are plenty of other arrows: generalization, realisation and etc. which have meaning to the diagram reader.
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Drag and drop files into WPF
...ing you have one file that you care about, pass it off to whatever
// handling code you have defined.
HandleFileOpen(files[0]);
}
}
Also, don't forget to actually hook up the event in XAML, as well as setting the AllowDrop attribute.
<StackPanel Name="ImagePanel" Drop="ImagePanel_Dro...
How to len(generator()) [duplicate]
...'t collections after all.
Generators are functions with a internal state (and fancy syntax). You can repeatedly call them to get a sequence of values, so you can use them in loop. But they don't contain any elements, so asking for the length of a generator is like asking for the length of a functio...
Hibernate Criteria returns children multiple times with FetchType.EAGER
I have an Order class that has a list of OrderTransactions and I mapped it with a one-to-many Hibernate mapping like so:
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What is causing “Unable to allocate memory for pool” in PHP?
...like Wordpress, but never encountered "Unable to allocate memory for pool" and having trouble tracking down any information.
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How can I add a table of contents to a Jupyter / JupyterLab notebook?
...n nbextensions extension, which bundles a whole lot of extensions together and allows you to manage them via jupyter itself. I think it's now the easiest way to get ToC2. And it provides other relevant extensions such as section folding. It's at github.com/ipython-contrib/jupyter_contrib_nbextension...
Is it better to reuse a StringBuilder in a loop?
...e of StringBuilder.
In a very long loop I'm manipulating a StringBuilder and passing it to another method like this:
14 A...
What is the difference between libsqlite3.dylib and libsqlite3.0.dylib?
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Thanks Jeff - I wasn't sure and didn't want to assume either way.
– earnshavian
Dec 2 '10 at 5:11
5
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animating addClass/removeClass with jQuery
I am using jQuery and jQuery-ui and want to animate various attributes on various objects.
6 Answers
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What is a columnar database?
... simply storing the info in tables with one (or rather often two) columns (and adding the necessary layer to access the columnar data in an easy fashion).
How do they differ from relational databases?
They generally differ from traditional (row-oriented) databases with regards to ...
performance....